diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index eba8a04..1887bd5 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.21.0"
+  ".": "3.22.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 15099ca..90ce078 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 8
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-c7910965e66e73ad8b65b6cc391d431094b2a6c6577c3e9d82feaa8138e74cff.yml
-openapi_spec_hash: 37748bb69c22a9ce721d9b5a5861f964
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase/stagehand-4d0d50b4f18fd74f58aca0b84d6968d1228499f2fa4e5714516f13ff6f820c9d.yml
+openapi_spec_hash: f7b1a869f3e412aea4d4bd42467791bb
 config_hash: 1fb12ae9b478488bc1e56bfbdc210b01
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 513a727..aef2e5e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 3.22.0 (2026-06-09)
+
+Full Changelog: [v3.21.0...v3.22.0](https://github.com/browserbase/stagehand-php/compare/v3.21.0...v3.22.0)
+
+### Features
+
+* [STG-2090] Add Azure Entra model auth support ([804b83d](https://github.com/browserbase/stagehand-php/commit/804b83d439fb62c8abf8d25853d41dc524a78d69))
+
 ## 3.21.0 (2026-05-27)
 
 Full Changelog: [v3.20.0...v3.21.0](https://github.com/browserbase/stagehand-php/compare/v3.20.0...v3.21.0)
diff --git a/README.md b/README.md
index dd7e623..84c1594 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ The REST API documentation can be found on [docs.stagehand.dev](https://docs.sta
 <!-- x-release-please-start-version -->
 
 ```
-composer require "browserbase/stagehand 3.21.0"
+composer require "browserbase/stagehand 3.22.0"
 ```
 
 <!-- x-release-please-end -->
diff --git a/src/Sessions/ModelConfig.php b/src/Sessions/ModelConfig.php
index dc6b3fd..142fa7b 100644
--- a/src/Sessions/ModelConfig.php
+++ b/src/Sessions/ModelConfig.php
@@ -7,15 +7,19 @@
 use Stagehand\Core\Concerns\SdkUnion;
 use Stagehand\Core\Conversion\Contracts\Converter;
 use Stagehand\Core\Conversion\Contracts\ConverterSource;
+use Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject;
 use Stagehand\Sessions\ModelConfig\GenericModelConfigObject;
 use Stagehand\Sessions\ModelConfig\VertexModelConfigObject;
 
 /**
  * @phpstan-import-type VertexModelConfigObjectShape from \Stagehand\Sessions\ModelConfig\VertexModelConfigObject
+ * @phpstan-import-type AzureEntraModelConfigObjectShape from \Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject
+ * @phpstan-import-type AzureAPIKeyModelConfigObjectShape from \Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject
  * @phpstan-import-type GenericModelConfigObjectShape from \Stagehand\Sessions\ModelConfig\GenericModelConfigObject
  *
- * @phpstan-type ModelConfigVariants = VertexModelConfigObject|GenericModelConfigObject
- * @phpstan-type ModelConfigShape = ModelConfigVariants|VertexModelConfigObjectShape|GenericModelConfigObjectShape
+ * @phpstan-type ModelConfigVariants = VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject
+ * @phpstan-type ModelConfigShape = ModelConfigVariants|VertexModelConfigObjectShape|AzureEntraModelConfigObjectShape|AzureAPIKeyModelConfigObjectShape|GenericModelConfigObjectShape
  */
 final class ModelConfig implements ConverterSource
 {
@@ -26,6 +30,11 @@ final class ModelConfig implements ConverterSource
      */
     public static function variants(): array
     {
-        return [VertexModelConfigObject::class, GenericModelConfigObject::class];
+        return [
+            VertexModelConfigObject::class,
+            AzureEntraModelConfigObject::class,
+            AzureAPIKeyModelConfigObject::class,
+            GenericModelConfigObject::class,
+        ];
     }
 }
diff --git a/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject.php b/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject.php
new file mode 100644
index 0000000..eb0ddf9
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureAPIKeyModelConfigObjectShape = array{
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   apiKey?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureAPIKeyModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureAPIKeyModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * API key for the model provider.
+     */
+    #[Optional]
+    public ?string $apiKey;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureAPIKeyModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureAPIKeyModelConfigObject::with(modelName: ..., providerOptions: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureAPIKeyModelConfigObject)->withModelName(...)->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $apiKey = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $apiKey && $self['apiKey'] = $apiKey;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * API key for the model provider.
+     */
+    public function withAPIKey(string $apiKey): self
+    {
+        $self = clone $this;
+        $self['apiKey'] = $apiKey;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject/ProviderOptions.php b/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..6f592b3
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..ac2bdc7
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/ModelConfig/AzureEntraModelConfigObject.php b/src/Sessions/ModelConfig/AzureEntraModelConfigObject.php
new file mode 100644
index 0000000..0971a20
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureEntraModelConfigObject.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\Auth;
+use Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type AuthShape from \Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\Auth
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureEntraModelConfigObjectShape = array{
+ *   auth: Auth|AuthShape,
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureEntraModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureEntraModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Azure provider authentication configuration.
+     */
+    #[Required]
+    public Auth $auth;
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureEntraModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureEntraModelConfigObject::with(
+     *   auth: ..., modelName: ..., providerOptions: ...
+     * )
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureEntraModelConfigObject)
+     *   ->withAuth(...)
+     *   ->withModelName(...)
+     *   ->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Auth|AuthShape $auth
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        Auth|array $auth,
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['auth'] = $auth;
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider authentication configuration.
+     *
+     * @param Auth|AuthShape $auth
+     */
+    public function withAuth(Auth|array $auth): self
+    {
+        $self = clone $this;
+        $self['auth'] = $auth;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/ModelConfig/AzureEntraModelConfigObject/Auth.php b/src/Sessions/ModelConfig/AzureEntraModelConfigObject/Auth.php
new file mode 100644
index 0000000..141e215
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureEntraModelConfigObject/Auth.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure provider authentication configuration.
+ *
+ * @phpstan-type AuthShape = array{token: string, type: 'azureEntraId'}
+ */
+final class Auth implements BaseModel
+{
+    /** @use SdkModel<AuthShape> */
+    use SdkModel;
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @var 'azureEntraId' $type
+     */
+    #[Required]
+    public string $type = 'azureEntraId';
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    #[Required]
+    public string $token;
+
+    /**
+     * `new Auth()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * Auth::with(token: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new Auth)->withToken(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     */
+    public static function with(string $token): self
+    {
+        $self = new self;
+
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    public function withToken(string $token): self
+    {
+        $self = clone $this;
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @param 'azureEntraId' $type
+     */
+    public function withType(string $type): self
+    {
+        $self = clone $this;
+        $self['type'] = $type;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/ModelConfig/AzureEntraModelConfigObject/ProviderOptions.php b/src/Sessions/ModelConfig/AzureEntraModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..efc0178
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureEntraModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/ModelConfig/AzureEntraModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/ModelConfig/AzureEntraModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..0e3f5f8
--- /dev/null
+++ b/src/Sessions/ModelConfig/AzureEntraModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\ModelConfig\AzureEntraModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options.php b/src/Sessions/SessionActParams/Options.php
index 0cd84c2..2007a77 100644
--- a/src/Sessions/SessionActParams/Options.php
+++ b/src/Sessions/SessionActParams/Options.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Attributes\Optional;
 use Stagehand\Core\Concerns\SdkModel;
 use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionActParams\Options\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionActParams\Options\Model\VertexModelConfigObject;
 use Stagehand\Sessions\SessionActParams\Options\Variable;
@@ -34,7 +36,7 @@ final class Options implements BaseModel
      * @var ModelVariants|null $model
      */
     #[Optional]
-    public string|VertexModelConfigObject|GenericModelConfigObject|null $model;
+    public string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $model;
 
     /**
      * Timeout in ms for the action.
@@ -64,7 +66,7 @@ public function __construct()
      * @param array<string,VariableShape>|null $variables
      */
     public static function with(
-        string|VertexModelConfigObject|array|GenericModelConfigObject|null $model = null,
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $model = null,
         ?float $timeout = null,
         ?array $variables = null,
     ): self {
@@ -83,7 +85,7 @@ public static function with(
      * @param ModelShape $model
      */
     public function withModel(
-        string|VertexModelConfigObject|array|GenericModelConfigObject $model
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject $model,
     ): self {
         $self = clone $this;
         $self['model'] = $model;
diff --git a/src/Sessions/SessionActParams/Options/Model.php b/src/Sessions/SessionActParams/Options/Model.php
index da1cc51..58acf42 100644
--- a/src/Sessions/SessionActParams/Options/Model.php
+++ b/src/Sessions/SessionActParams/Options/Model.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Concerns\SdkUnion;
 use Stagehand\Core\Conversion\Contracts\Converter;
 use Stagehand\Core\Conversion\Contracts\ConverterSource;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionActParams\Options\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionActParams\Options\Model\VertexModelConfigObject;
 
@@ -14,10 +16,12 @@
  * Model configuration object or model name string (e.g., 'openai/gpt-5-nano').
  *
  * @phpstan-import-type VertexModelConfigObjectShape from \Stagehand\Sessions\SessionActParams\Options\Model\VertexModelConfigObject
+ * @phpstan-import-type AzureEntraModelConfigObjectShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject
+ * @phpstan-import-type AzureAPIKeyModelConfigObjectShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject
  * @phpstan-import-type GenericModelConfigObjectShape from \Stagehand\Sessions\SessionActParams\Options\Model\GenericModelConfigObject
  *
- * @phpstan-type ModelVariants = string|VertexModelConfigObject|GenericModelConfigObject
- * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|GenericModelConfigObjectShape
+ * @phpstan-type ModelVariants = string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject
+ * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|AzureEntraModelConfigObjectShape|AzureAPIKeyModelConfigObjectShape|GenericModelConfigObjectShape
  */
 final class Model implements ConverterSource
 {
@@ -29,7 +33,11 @@ final class Model implements ConverterSource
     public static function variants(): array
     {
         return [
-            VertexModelConfigObject::class, GenericModelConfigObject::class, 'string',
+            VertexModelConfigObject::class,
+            AzureEntraModelConfigObject::class,
+            AzureAPIKeyModelConfigObject::class,
+            GenericModelConfigObject::class,
+            'string',
         ];
     }
 }
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject.php b/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject.php
new file mode 100644
index 0000000..51675fc
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureAPIKeyModelConfigObjectShape = array{
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   apiKey?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureAPIKeyModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureAPIKeyModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * API key for the model provider.
+     */
+    #[Optional]
+    public ?string $apiKey;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureAPIKeyModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureAPIKeyModelConfigObject::with(modelName: ..., providerOptions: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureAPIKeyModelConfigObject)->withModelName(...)->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $apiKey = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $apiKey && $self['apiKey'] = $apiKey;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * API key for the model provider.
+     */
+    public function withAPIKey(string $apiKey): self
+    {
+        $self = clone $this;
+        $self['apiKey'] = $apiKey;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php b/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..d78369e
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..360aa69
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject.php b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject.php
new file mode 100644
index 0000000..83a40f4
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\Auth;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type AuthShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\Auth
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureEntraModelConfigObjectShape = array{
+ *   auth: Auth|AuthShape,
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureEntraModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureEntraModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Azure provider authentication configuration.
+     */
+    #[Required]
+    public Auth $auth;
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureEntraModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureEntraModelConfigObject::with(
+     *   auth: ..., modelName: ..., providerOptions: ...
+     * )
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureEntraModelConfigObject)
+     *   ->withAuth(...)
+     *   ->withModelName(...)
+     *   ->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Auth|AuthShape $auth
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        Auth|array $auth,
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['auth'] = $auth;
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider authentication configuration.
+     *
+     * @param Auth|AuthShape $auth
+     */
+    public function withAuth(Auth|array $auth): self
+    {
+        $self = clone $this;
+        $self['auth'] = $auth;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/Auth.php b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/Auth.php
new file mode 100644
index 0000000..385be35
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/Auth.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure provider authentication configuration.
+ *
+ * @phpstan-type AuthShape = array{token: string, type: 'azureEntraId'}
+ */
+final class Auth implements BaseModel
+{
+    /** @use SdkModel<AuthShape> */
+    use SdkModel;
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @var 'azureEntraId' $type
+     */
+    #[Required]
+    public string $type = 'azureEntraId';
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    #[Required]
+    public string $token;
+
+    /**
+     * `new Auth()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * Auth::with(token: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new Auth)->withToken(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     */
+    public static function with(string $token): self
+    {
+        $self = new self;
+
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    public function withToken(string $token): self
+    {
+        $self = clone $this;
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @param 'azureEntraId' $type
+     */
+    public function withType(string $type): self
+    {
+        $self = clone $this;
+        $self['type'] = $type;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..15614e2
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..517bd18
--- /dev/null
+++ b/src/Sessions/SessionActParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionActParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig.php b/src/Sessions/SessionExecuteParams/AgentConfig.php
index 04de895..656480e 100644
--- a/src/Sessions/SessionExecuteParams/AgentConfig.php
+++ b/src/Sessions/SessionExecuteParams/AgentConfig.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Attributes\Optional;
 use Stagehand\Core\Concerns\SdkModel;
 use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\GenericModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\VertexModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Mode;
@@ -44,7 +46,7 @@ final class AgentConfig implements BaseModel
      * @var ExecutionModelVariants|null $executionModel
      */
     #[Optional]
-    public string|VertexModelConfigObject|GenericModelConfigObject|null $executionModel;
+    public string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $executionModel;
 
     /**
      * Tool mode for the agent (dom, hybrid, cua). If set, overrides cua.
@@ -60,7 +62,7 @@ final class AgentConfig implements BaseModel
      * @var ModelVariants|null $model
      */
     #[Optional]
-    public string|\Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\VertexModelConfigObject|AgentConfig\Model\GenericModelConfigObject|null $model;
+    public string|\Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\VertexModelConfigObject|\Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject|\Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject|AgentConfig\Model\GenericModelConfigObject|null $model;
 
     /**
      * AI provider for the agent (legacy, use model: openai/gpt-5-nano instead).
@@ -93,9 +95,9 @@ public function __construct()
      */
     public static function with(
         ?bool $cua = null,
-        string|VertexModelConfigObject|array|GenericModelConfigObject|null $executionModel = null,
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $executionModel = null,
         Mode|string|null $mode = null,
-        string|AgentConfig\Model\VertexModelConfigObject|array|AgentConfig\Model\GenericModelConfigObject|null $model = null,
+        string|AgentConfig\Model\VertexModelConfigObject|array|AgentConfig\Model\AzureEntraModelConfigObject|AgentConfig\Model\AzureAPIKeyModelConfigObject|AgentConfig\Model\GenericModelConfigObject|null $model = null,
         Provider|string|null $provider = null,
         ?string $systemPrompt = null,
     ): self {
@@ -128,7 +130,7 @@ public function withCua(bool $cua): self
      * @param ExecutionModelShape $executionModel
      */
     public function withExecutionModel(
-        string|VertexModelConfigObject|array|GenericModelConfigObject $executionModel,
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject $executionModel,
     ): self {
         $self = clone $this;
         $self['executionModel'] = $executionModel;
@@ -155,7 +157,7 @@ public function withMode(Mode|string $mode): self
      * @param ModelShape $model
      */
     public function withModel(
-        string|AgentConfig\Model\VertexModelConfigObject|array|AgentConfig\Model\GenericModelConfigObject $model,
+        string|AgentConfig\Model\VertexModelConfigObject|array|AgentConfig\Model\AzureEntraModelConfigObject|AgentConfig\Model\AzureAPIKeyModelConfigObject|AgentConfig\Model\GenericModelConfigObject $model,
     ): self {
         $self = clone $this;
         $self['model'] = $model;
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel.php
index 47e2aaa..a0662e9 100644
--- a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel.php
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Concerns\SdkUnion;
 use Stagehand\Core\Conversion\Contracts\Converter;
 use Stagehand\Core\Conversion\Contracts\ConverterSource;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\GenericModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\VertexModelConfigObject;
 
@@ -14,10 +16,12 @@
  * Model configuration object or model name string (e.g., 'openai/gpt-5-nano') for tool execution (observe/act calls within agent tools). If not specified, inherits from the main model configuration.
  *
  * @phpstan-import-type VertexModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\VertexModelConfigObject
+ * @phpstan-import-type AzureEntraModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject
+ * @phpstan-import-type AzureAPIKeyModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject
  * @phpstan-import-type GenericModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\GenericModelConfigObject
  *
- * @phpstan-type ExecutionModelVariants = string|VertexModelConfigObject|GenericModelConfigObject
- * @phpstan-type ExecutionModelShape = ExecutionModelVariants|VertexModelConfigObjectShape|GenericModelConfigObjectShape
+ * @phpstan-type ExecutionModelVariants = string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject
+ * @phpstan-type ExecutionModelShape = ExecutionModelVariants|VertexModelConfigObjectShape|AzureEntraModelConfigObjectShape|AzureAPIKeyModelConfigObjectShape|GenericModelConfigObjectShape
  */
 final class ExecutionModel implements ConverterSource
 {
@@ -29,7 +33,11 @@ final class ExecutionModel implements ConverterSource
     public static function variants(): array
     {
         return [
-            VertexModelConfigObject::class, GenericModelConfigObject::class, 'string',
+            VertexModelConfigObject::class,
+            AzureEntraModelConfigObject::class,
+            AzureAPIKeyModelConfigObject::class,
+            GenericModelConfigObject::class,
+            'string',
         ];
     }
 }
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject.php
new file mode 100644
index 0000000..b7be46d
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureAPIKeyModelConfigObjectShape = array{
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   apiKey?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureAPIKeyModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureAPIKeyModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * API key for the model provider.
+     */
+    #[Optional]
+    public ?string $apiKey;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureAPIKeyModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureAPIKeyModelConfigObject::with(modelName: ..., providerOptions: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureAPIKeyModelConfigObject)->withModelName(...)->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $apiKey = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $apiKey && $self['apiKey'] = $apiKey;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * API key for the model provider.
+     */
+    public function withAPIKey(string $apiKey): self
+    {
+        $self = clone $this;
+        $self['apiKey'] = $apiKey;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject/ProviderOptions.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..bb56a52
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..dbe5935
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject.php
new file mode 100644
index 0000000..3a1bd19
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\Auth;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type AuthShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\Auth
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureEntraModelConfigObjectShape = array{
+ *   auth: Auth|AuthShape,
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureEntraModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureEntraModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Azure provider authentication configuration.
+     */
+    #[Required]
+    public Auth $auth;
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureEntraModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureEntraModelConfigObject::with(
+     *   auth: ..., modelName: ..., providerOptions: ...
+     * )
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureEntraModelConfigObject)
+     *   ->withAuth(...)
+     *   ->withModelName(...)
+     *   ->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Auth|AuthShape $auth
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        Auth|array $auth,
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['auth'] = $auth;
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider authentication configuration.
+     *
+     * @param Auth|AuthShape $auth
+     */
+    public function withAuth(Auth|array $auth): self
+    {
+        $self = clone $this;
+        $self['auth'] = $auth;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/Auth.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/Auth.php
new file mode 100644
index 0000000..843a789
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/Auth.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure provider authentication configuration.
+ *
+ * @phpstan-type AuthShape = array{token: string, type: 'azureEntraId'}
+ */
+final class Auth implements BaseModel
+{
+    /** @use SdkModel<AuthShape> */
+    use SdkModel;
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @var 'azureEntraId' $type
+     */
+    #[Required]
+    public string $type = 'azureEntraId';
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    #[Required]
+    public string $token;
+
+    /**
+     * `new Auth()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * Auth::with(token: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new Auth)->withToken(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     */
+    public static function with(string $token): self
+    {
+        $self = new self;
+
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    public function withToken(string $token): self
+    {
+        $self = clone $this;
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @param 'azureEntraId' $type
+     */
+    public function withType(string $type): self
+    {
+        $self = clone $this;
+        $self['type'] = $type;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/ProviderOptions.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..08f5519
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..5ab568f
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/ExecutionModel/AzureEntraModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\ExecutionModel\AzureEntraModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model.php
index 7d3d45c..994bca2 100644
--- a/src/Sessions/SessionExecuteParams/AgentConfig/Model.php
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Concerns\SdkUnion;
 use Stagehand\Core\Conversion\Contracts\Converter;
 use Stagehand\Core\Conversion\Contracts\ConverterSource;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\VertexModelConfigObject;
 
@@ -14,10 +16,12 @@
  * Model configuration object or model name string (e.g., 'openai/gpt-5-nano').
  *
  * @phpstan-import-type VertexModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\VertexModelConfigObject
+ * @phpstan-import-type AzureEntraModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject
+ * @phpstan-import-type AzureAPIKeyModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject
  * @phpstan-import-type GenericModelConfigObjectShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\GenericModelConfigObject
  *
- * @phpstan-type ModelVariants = string|VertexModelConfigObject|GenericModelConfigObject
- * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|GenericModelConfigObjectShape
+ * @phpstan-type ModelVariants = string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject
+ * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|AzureEntraModelConfigObjectShape|AzureAPIKeyModelConfigObjectShape|GenericModelConfigObjectShape
  */
 final class Model implements ConverterSource
 {
@@ -29,7 +33,11 @@ final class Model implements ConverterSource
     public static function variants(): array
     {
         return [
-            VertexModelConfigObject::class, GenericModelConfigObject::class, 'string',
+            VertexModelConfigObject::class,
+            AzureEntraModelConfigObject::class,
+            AzureAPIKeyModelConfigObject::class,
+            GenericModelConfigObject::class,
+            'string',
         ];
     }
 }
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject.php
new file mode 100644
index 0000000..d0009c8
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureAPIKeyModelConfigObjectShape = array{
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   apiKey?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureAPIKeyModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureAPIKeyModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * API key for the model provider.
+     */
+    #[Optional]
+    public ?string $apiKey;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureAPIKeyModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureAPIKeyModelConfigObject::with(modelName: ..., providerOptions: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureAPIKeyModelConfigObject)->withModelName(...)->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $apiKey = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $apiKey && $self['apiKey'] = $apiKey;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * API key for the model provider.
+     */
+    public function withAPIKey(string $apiKey): self
+    {
+        $self = clone $this;
+        $self['apiKey'] = $apiKey;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..d4bf3dc
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..f52cfa2
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject.php
new file mode 100644
index 0000000..07fb78f
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\Auth;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type AuthShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\Auth
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureEntraModelConfigObjectShape = array{
+ *   auth: Auth|AuthShape,
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureEntraModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureEntraModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Azure provider authentication configuration.
+     */
+    #[Required]
+    public Auth $auth;
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureEntraModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureEntraModelConfigObject::with(
+     *   auth: ..., modelName: ..., providerOptions: ...
+     * )
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureEntraModelConfigObject)
+     *   ->withAuth(...)
+     *   ->withModelName(...)
+     *   ->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Auth|AuthShape $auth
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        Auth|array $auth,
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['auth'] = $auth;
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider authentication configuration.
+     *
+     * @param Auth|AuthShape $auth
+     */
+    public function withAuth(Auth|array $auth): self
+    {
+        $self = clone $this;
+        $self['auth'] = $auth;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/Auth.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/Auth.php
new file mode 100644
index 0000000..267e681
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/Auth.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure provider authentication configuration.
+ *
+ * @phpstan-type AuthShape = array{token: string, type: 'azureEntraId'}
+ */
+final class Auth implements BaseModel
+{
+    /** @use SdkModel<AuthShape> */
+    use SdkModel;
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @var 'azureEntraId' $type
+     */
+    #[Required]
+    public string $type = 'azureEntraId';
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    #[Required]
+    public string $token;
+
+    /**
+     * `new Auth()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * Auth::with(token: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new Auth)->withToken(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     */
+    public static function with(string $token): self
+    {
+        $self = new self;
+
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    public function withToken(string $token): self
+    {
+        $self = clone $this;
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @param 'azureEntraId' $type
+     */
+    public function withType(string $type): self
+    {
+        $self = clone $this;
+        $self['type'] = $type;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/ProviderOptions.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..5a0aa4a
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..92e07ab
--- /dev/null
+++ b/src/Sessions/SessionExecuteParams/AgentConfig/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExecuteParams\AgentConfig\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options.php b/src/Sessions/SessionExtractParams/Options.php
index d364a3f..2434c1a 100644
--- a/src/Sessions/SessionExtractParams/Options.php
+++ b/src/Sessions/SessionExtractParams/Options.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Attributes\Optional;
 use Stagehand\Core\Concerns\SdkModel;
 use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionExtractParams\Options\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionExtractParams\Options\Model\VertexModelConfigObject;
 
@@ -41,7 +43,7 @@ final class Options implements BaseModel
      * @var ModelVariants|null $model
      */
     #[Optional]
-    public string|VertexModelConfigObject|GenericModelConfigObject|null $model;
+    public string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $model;
 
     /**
      * When true, include a screenshot of the current viewport in the extraction LLM call. Defaults to false.
@@ -76,7 +78,7 @@ public function __construct()
      */
     public static function with(
         ?array $ignoreSelectors = null,
-        string|VertexModelConfigObject|array|GenericModelConfigObject|null $model = null,
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $model = null,
         ?bool $screenshot = null,
         ?string $selector = null,
         ?float $timeout = null,
@@ -111,7 +113,7 @@ public function withIgnoreSelectors(array $ignoreSelectors): self
      * @param ModelShape $model
      */
     public function withModel(
-        string|VertexModelConfigObject|array|GenericModelConfigObject $model
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject $model,
     ): self {
         $self = clone $this;
         $self['model'] = $model;
diff --git a/src/Sessions/SessionExtractParams/Options/Model.php b/src/Sessions/SessionExtractParams/Options/Model.php
index 444bcd6..a20184a 100644
--- a/src/Sessions/SessionExtractParams/Options/Model.php
+++ b/src/Sessions/SessionExtractParams/Options/Model.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Concerns\SdkUnion;
 use Stagehand\Core\Conversion\Contracts\Converter;
 use Stagehand\Core\Conversion\Contracts\ConverterSource;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionExtractParams\Options\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionExtractParams\Options\Model\VertexModelConfigObject;
 
@@ -14,10 +16,12 @@
  * Model configuration object or model name string (e.g., 'openai/gpt-5-nano').
  *
  * @phpstan-import-type VertexModelConfigObjectShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\VertexModelConfigObject
+ * @phpstan-import-type AzureEntraModelConfigObjectShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject
+ * @phpstan-import-type AzureAPIKeyModelConfigObjectShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject
  * @phpstan-import-type GenericModelConfigObjectShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\GenericModelConfigObject
  *
- * @phpstan-type ModelVariants = string|VertexModelConfigObject|GenericModelConfigObject
- * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|GenericModelConfigObjectShape
+ * @phpstan-type ModelVariants = string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject
+ * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|AzureEntraModelConfigObjectShape|AzureAPIKeyModelConfigObjectShape|GenericModelConfigObjectShape
  */
 final class Model implements ConverterSource
 {
@@ -29,7 +33,11 @@ final class Model implements ConverterSource
     public static function variants(): array
     {
         return [
-            VertexModelConfigObject::class, GenericModelConfigObject::class, 'string',
+            VertexModelConfigObject::class,
+            AzureEntraModelConfigObject::class,
+            AzureAPIKeyModelConfigObject::class,
+            GenericModelConfigObject::class,
+            'string',
         ];
     }
 }
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject.php b/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject.php
new file mode 100644
index 0000000..63183d7
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureAPIKeyModelConfigObjectShape = array{
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   apiKey?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureAPIKeyModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureAPIKeyModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * API key for the model provider.
+     */
+    #[Optional]
+    public ?string $apiKey;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureAPIKeyModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureAPIKeyModelConfigObject::with(modelName: ..., providerOptions: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureAPIKeyModelConfigObject)->withModelName(...)->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $apiKey = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $apiKey && $self['apiKey'] = $apiKey;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * API key for the model provider.
+     */
+    public function withAPIKey(string $apiKey): self
+    {
+        $self = clone $this;
+        $self['apiKey'] = $apiKey;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php b/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..f182781
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..49c5469
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject.php b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject.php
new file mode 100644
index 0000000..128c2b8
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\Auth;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type AuthShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\Auth
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureEntraModelConfigObjectShape = array{
+ *   auth: Auth|AuthShape,
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureEntraModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureEntraModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Azure provider authentication configuration.
+     */
+    #[Required]
+    public Auth $auth;
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureEntraModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureEntraModelConfigObject::with(
+     *   auth: ..., modelName: ..., providerOptions: ...
+     * )
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureEntraModelConfigObject)
+     *   ->withAuth(...)
+     *   ->withModelName(...)
+     *   ->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Auth|AuthShape $auth
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        Auth|array $auth,
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['auth'] = $auth;
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider authentication configuration.
+     *
+     * @param Auth|AuthShape $auth
+     */
+    public function withAuth(Auth|array $auth): self
+    {
+        $self = clone $this;
+        $self['auth'] = $auth;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/Auth.php b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/Auth.php
new file mode 100644
index 0000000..977f8e1
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/Auth.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure provider authentication configuration.
+ *
+ * @phpstan-type AuthShape = array{token: string, type: 'azureEntraId'}
+ */
+final class Auth implements BaseModel
+{
+    /** @use SdkModel<AuthShape> */
+    use SdkModel;
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @var 'azureEntraId' $type
+     */
+    #[Required]
+    public string $type = 'azureEntraId';
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    #[Required]
+    public string $token;
+
+    /**
+     * `new Auth()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * Auth::with(token: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new Auth)->withToken(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     */
+    public static function with(string $token): self
+    {
+        $self = new self;
+
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    public function withToken(string $token): self
+    {
+        $self = clone $this;
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @param 'azureEntraId' $type
+     */
+    public function withType(string $type): self
+    {
+        $self = clone $this;
+        $self['type'] = $type;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..c244c01
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..ec659ce
--- /dev/null
+++ b/src/Sessions/SessionExtractParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionExtractParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options.php b/src/Sessions/SessionObserveParams/Options.php
index 3b08d68..c9f27f4 100644
--- a/src/Sessions/SessionObserveParams/Options.php
+++ b/src/Sessions/SessionObserveParams/Options.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Attributes\Optional;
 use Stagehand\Core\Concerns\SdkModel;
 use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionObserveParams\Options\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionObserveParams\Options\Model\VertexModelConfigObject;
 use Stagehand\Sessions\SessionObserveParams\Options\Variable;
@@ -44,7 +46,7 @@ final class Options implements BaseModel
      * @var ModelVariants|null $model
      */
     #[Optional]
-    public string|VertexModelConfigObject|GenericModelConfigObject|null $model;
+    public string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $model;
 
     /**
      * CSS selector to scope observation to a specific element.
@@ -82,7 +84,7 @@ public function __construct()
      */
     public static function with(
         ?array $ignoreSelectors = null,
-        string|VertexModelConfigObject|array|GenericModelConfigObject|null $model = null,
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject|null $model = null,
         ?string $selector = null,
         ?float $timeout = null,
         ?array $variables = null,
@@ -117,7 +119,7 @@ public function withIgnoreSelectors(array $ignoreSelectors): self
      * @param ModelShape $model
      */
     public function withModel(
-        string|VertexModelConfigObject|array|GenericModelConfigObject $model
+        string|VertexModelConfigObject|array|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject $model,
     ): self {
         $self = clone $this;
         $self['model'] = $model;
diff --git a/src/Sessions/SessionObserveParams/Options/Model.php b/src/Sessions/SessionObserveParams/Options/Model.php
index 2841eeb..3b26d49 100644
--- a/src/Sessions/SessionObserveParams/Options/Model.php
+++ b/src/Sessions/SessionObserveParams/Options/Model.php
@@ -7,6 +7,8 @@
 use Stagehand\Core\Concerns\SdkUnion;
 use Stagehand\Core\Conversion\Contracts\Converter;
 use Stagehand\Core\Conversion\Contracts\ConverterSource;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject;
 use Stagehand\Sessions\SessionObserveParams\Options\Model\GenericModelConfigObject;
 use Stagehand\Sessions\SessionObserveParams\Options\Model\VertexModelConfigObject;
 
@@ -14,10 +16,12 @@
  * Model configuration object or model name string (e.g., 'openai/gpt-5-nano').
  *
  * @phpstan-import-type VertexModelConfigObjectShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\VertexModelConfigObject
+ * @phpstan-import-type AzureEntraModelConfigObjectShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject
+ * @phpstan-import-type AzureAPIKeyModelConfigObjectShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject
  * @phpstan-import-type GenericModelConfigObjectShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\GenericModelConfigObject
  *
- * @phpstan-type ModelVariants = string|VertexModelConfigObject|GenericModelConfigObject
- * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|GenericModelConfigObjectShape
+ * @phpstan-type ModelVariants = string|VertexModelConfigObject|AzureEntraModelConfigObject|AzureAPIKeyModelConfigObject|GenericModelConfigObject
+ * @phpstan-type ModelShape = ModelVariants|VertexModelConfigObjectShape|AzureEntraModelConfigObjectShape|AzureAPIKeyModelConfigObjectShape|GenericModelConfigObjectShape
  */
 final class Model implements ConverterSource
 {
@@ -29,7 +33,11 @@ final class Model implements ConverterSource
     public static function variants(): array
     {
         return [
-            VertexModelConfigObject::class, GenericModelConfigObject::class, 'string',
+            VertexModelConfigObject::class,
+            AzureEntraModelConfigObject::class,
+            AzureAPIKeyModelConfigObject::class,
+            GenericModelConfigObject::class,
+            'string',
         ];
     }
 }
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject.php b/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject.php
new file mode 100644
index 0000000..f8622d5
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureAPIKeyModelConfigObjectShape = array{
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   apiKey?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureAPIKeyModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureAPIKeyModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * API key for the model provider.
+     */
+    #[Optional]
+    public ?string $apiKey;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureAPIKeyModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureAPIKeyModelConfigObject::with(modelName: ..., providerOptions: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureAPIKeyModelConfigObject)->withModelName(...)->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $apiKey = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $apiKey && $self['apiKey'] = $apiKey;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * API key for the model provider.
+     */
+    public function withAPIKey(string $apiKey): self
+    {
+        $self = clone $this;
+        $self['apiKey'] = $apiKey;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php b/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..4c746c5
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..fe88cb0
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureAPIKeyModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model\AzureAPIKeyModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject.php b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject.php
new file mode 100644
index 0000000..f716a1d
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject.php
@@ -0,0 +1,198 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\Auth;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+/**
+ * @phpstan-import-type AuthShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\Auth
+ * @phpstan-import-type ProviderOptionsShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions
+ *
+ * @phpstan-type AzureEntraModelConfigObjectShape = array{
+ *   auth: Auth|AuthShape,
+ *   modelName: string,
+ *   provider: 'azure',
+ *   providerOptions: ProviderOptions|ProviderOptionsShape,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ * }
+ */
+final class AzureEntraModelConfigObject implements BaseModel
+{
+    /** @use SdkModel<AzureEntraModelConfigObjectShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @var 'azure' $provider
+     */
+    #[Required]
+    public string $provider = 'azure';
+
+    /**
+     * Azure provider authentication configuration.
+     */
+    #[Required]
+    public Auth $auth;
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    #[Required]
+    public string $modelName;
+
+    /**
+     * Azure provider-specific model configuration.
+     */
+    #[Required]
+    public ProviderOptions $providerOptions;
+
+    /**
+     * Base URL for the model provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * `new AzureEntraModelConfigObject()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * AzureEntraModelConfigObject::with(
+     *   auth: ..., modelName: ..., providerOptions: ...
+     * )
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new AzureEntraModelConfigObject)
+     *   ->withAuth(...)
+     *   ->withModelName(...)
+     *   ->withProviderOptions(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Auth|AuthShape $auth
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        Auth|array $auth,
+        string $modelName,
+        ProviderOptions|array $providerOptions,
+        ?string $baseURL = null,
+        ?array $headers = null,
+    ): self {
+        $self = new self;
+
+        $self['auth'] = $auth;
+        $self['modelName'] = $modelName;
+        $self['providerOptions'] = $providerOptions;
+
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider authentication configuration.
+     *
+     * @param Auth|AuthShape $auth
+     */
+    public function withAuth(Auth|array $auth): self
+    {
+        $self = clone $this;
+        $self['auth'] = $auth;
+
+        return $self;
+    }
+
+    /**
+     * Model name string with provider prefix (e.g., 'openai/gpt-5-nano').
+     */
+    public function withModelName(string $modelName): self
+    {
+        $self = clone $this;
+        $self['modelName'] = $modelName;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI model provider.
+     *
+     * @param 'azure' $provider
+     */
+    public function withProvider(string $provider): self
+    {
+        $self = clone $this;
+        $self['provider'] = $provider;
+
+        return $self;
+    }
+
+    /**
+     * Azure provider-specific model configuration.
+     *
+     * @param ProviderOptions|ProviderOptionsShape $providerOptions
+     */
+    public function withProviderOptions(
+        ProviderOptions|array $providerOptions
+    ): self {
+        $self = clone $this;
+        $self['providerOptions'] = $providerOptions;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the model provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the model provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/Auth.php b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/Auth.php
new file mode 100644
index 0000000..797484b
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/Auth.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure provider authentication configuration.
+ *
+ * @phpstan-type AuthShape = array{token: string, type: 'azureEntraId'}
+ */
+final class Auth implements BaseModel
+{
+    /** @use SdkModel<AuthShape> */
+    use SdkModel;
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @var 'azureEntraId' $type
+     */
+    #[Required]
+    public string $type = 'azureEntraId';
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    #[Required]
+    public string $token;
+
+    /**
+     * `new Auth()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * Auth::with(token: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new Auth)->withToken(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     */
+    public static function with(string $token): self
+    {
+        $self = new self;
+
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Microsoft Entra ID bearer token for Azure OpenAI.
+     */
+    public function withToken(string $token): self
+    {
+        $self = clone $this;
+        $self['token'] = $token;
+
+        return $self;
+    }
+
+    /**
+     * Use a Microsoft Entra ID bearer token for authentication.
+     *
+     * @param 'azureEntraId' $type
+     */
+    public function withType(string $type): self
+    {
+        $self = clone $this;
+        $self['type'] = $type;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php
new file mode 100644
index 0000000..9e25ab7
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject;
+
+use Stagehand\Core\Attributes\Required;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+use Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions\Azure;
+
+/**
+ * Azure provider-specific model configuration.
+ *
+ * @phpstan-import-type AzureShape from \Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions\Azure
+ *
+ * @phpstan-type ProviderOptionsShape = array{azure: Azure|AzureShape}
+ */
+final class ProviderOptions implements BaseModel
+{
+    /** @use SdkModel<ProviderOptionsShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     */
+    #[Required]
+    public Azure $azure;
+
+    /**
+     * `new ProviderOptions()` is missing required properties by the API.
+     *
+     * To enforce required parameters use
+     * ```
+     * ProviderOptions::with(azure: ...)
+     * ```
+     *
+     * Otherwise ensure the following setters are called
+     *
+     * ```
+     * (new ProviderOptions)->withAzure(...)
+     * ```
+     */
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public static function with(Azure|array $azure): self
+    {
+        $self = new self;
+
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI provider-specific settings.
+     *
+     * @param Azure|AzureShape $azure
+     */
+    public function withAzure(Azure|array $azure): self
+    {
+        $self = clone $this;
+        $self['azure'] = $azure;
+
+        return $self;
+    }
+}
diff --git a/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
new file mode 100644
index 0000000..9491502
--- /dev/null
+++ b/src/Sessions/SessionObserveParams/Options/Model/AzureEntraModelConfigObject/ProviderOptions/Azure.php
@@ -0,0 +1,146 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Stagehand\Sessions\SessionObserveParams\Options\Model\AzureEntraModelConfigObject\ProviderOptions;
+
+use Stagehand\Core\Attributes\Optional;
+use Stagehand\Core\Concerns\SdkModel;
+use Stagehand\Core\Contracts\BaseModel;
+
+/**
+ * Azure OpenAI provider-specific settings.
+ *
+ * @phpstan-type AzureShape = array{
+ *   apiVersion?: string|null,
+ *   baseURL?: string|null,
+ *   headers?: array<string,string>|null,
+ *   resourceName?: string|null,
+ *   useDeploymentBasedURLs?: bool|null,
+ * }
+ */
+final class Azure implements BaseModel
+{
+    /** @use SdkModel<AzureShape> */
+    use SdkModel;
+
+    /**
+     * Azure OpenAI API version.
+     */
+    #[Optional]
+    public ?string $apiVersion;
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    #[Optional]
+    public ?string $baseURL;
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @var array<string,string>|null $headers
+     */
+    #[Optional(map: 'string')]
+    public ?array $headers;
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    #[Optional]
+    public ?string $resourceName;
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    #[Optional('useDeploymentBasedUrls')]
+    public ?bool $useDeploymentBasedURLs;
+
+    public function __construct()
+    {
+        $this->initialize();
+    }
+
+    /**
+     * Construct an instance from the required parameters.
+     *
+     * You must use named parameters to construct any parameters with a default value.
+     *
+     * @param array<string,string>|null $headers
+     */
+    public static function with(
+        ?string $apiVersion = null,
+        ?string $baseURL = null,
+        ?array $headers = null,
+        ?string $resourceName = null,
+        ?bool $useDeploymentBasedURLs = null,
+    ): self {
+        $self = new self;
+
+        null !== $apiVersion && $self['apiVersion'] = $apiVersion;
+        null !== $baseURL && $self['baseURL'] = $baseURL;
+        null !== $headers && $self['headers'] = $headers;
+        null !== $resourceName && $self['resourceName'] = $resourceName;
+        null !== $useDeploymentBasedURLs && $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI API version.
+     */
+    public function withAPIVersion(string $apiVersion): self
+    {
+        $self = clone $this;
+        $self['apiVersion'] = $apiVersion;
+
+        return $self;
+    }
+
+    /**
+     * Base URL for the Azure OpenAI provider.
+     */
+    public function withBaseURL(string $baseURL): self
+    {
+        $self = clone $this;
+        $self['baseURL'] = $baseURL;
+
+        return $self;
+    }
+
+    /**
+     * Custom headers sent with every request to the Azure OpenAI provider.
+     *
+     * @param array<string,string> $headers
+     */
+    public function withHeaders(array $headers): self
+    {
+        $self = clone $this;
+        $self['headers'] = $headers;
+
+        return $self;
+    }
+
+    /**
+     * Azure OpenAI resource name.
+     */
+    public function withResourceName(string $resourceName): self
+    {
+        $self = clone $this;
+        $self['resourceName'] = $resourceName;
+
+        return $self;
+    }
+
+    /**
+     * Whether to use deployment-based Azure OpenAI URLs.
+     */
+    public function withUseDeploymentBasedURLs(
+        bool $useDeploymentBasedURLs
+    ): self {
+        $self = clone $this;
+        $self['useDeploymentBasedURLs'] = $useDeploymentBasedURLs;
+
+        return $self;
+    }
+}
diff --git a/src/Version.php b/src/Version.php
index b10e37c..e7c552b 100644
--- a/src/Version.php
+++ b/src/Version.php
@@ -5,5 +5,5 @@
 namespace Stagehand;
 
 // x-release-please-start-version
-const VERSION = '3.21.0';
+const VERSION = '3.22.0';
 // x-release-please-end