diff --git a/core/index.d.ts b/core/index.d.ts
index b5b409ef929..a11f3730e57 100644
--- a/core/index.d.ts
+++ b/core/index.d.ts
@@ -397,6 +397,8 @@ export interface AssistantChatMessage {
   content: MessageContent;
   toolCalls?: ToolCallDelta[];
   usage?: Usage;
+  opcRequestId?: string;
+  [key: string]: unknown;
 }
 
 export interface SystemChatMessage {
diff --git a/core/llm/index.ts b/core/llm/index.ts
index 54ea22243f9..b4fe3ff46e6 100644
--- a/core/llm/index.ts
+++ b/core/llm/index.ts
@@ -890,10 +890,18 @@ export abstract class BaseLLM implements ILLM {
     options: LLMFullCompletionOptions = {},
   ) {
     let completion = "";
+    let opcRequestId: string | undefined = undefined;
     for await (const message of this.streamChat(messages, signal, options)) {
       completion += renderChatMessage(message);
+      if (message.role === "assistant") {
+        opcRequestId = (message as import("../index").AssistantChatMessage).opcRequestId ?? opcRequestId;
+      }
     }
-    return { role: "assistant" as const, content: completion };
+    return {
+      role: "assistant" as const,
+      content: completion,
+      ...(opcRequestId ? { opcRequestId } : {}),
+    };
   }
 
   compileChatMessages(
diff --git a/core/llm/llms/oca/Oca.ts b/core/llm/llms/oca/Oca.ts
index d6a4307e96e..f28bddac0f2 100644
--- a/core/llm/llms/oca/Oca.ts
+++ b/core/llm/llms/oca/Oca.ts
@@ -16,7 +16,7 @@ import {
   toChatBody,
 } from "../../openaiTypeConverters.js";
 import { OcaTokenManager } from "./util/ocaTokenManager.js";
-import { createOcaHeaders, generateOpcRequestId } from "./util/utils.js";
+import { createOcaHeaders } from "./util/utils.js";
 
 interface ModelInfoMap {
   models: { [key: string]: ModelInfo };
@@ -30,7 +30,6 @@ const parsePrice = (price: any) => {
 };
 class Oca extends BaseLLM {
   private modelMap: ModelInfoMap;
-
   constructor(options: LLMOptions) {
     super({
       ...options,
@@ -48,8 +47,8 @@ class Oca extends BaseLLM {
   static providerName = "oca";
 
   protected useOpenAIAdapterFor: (LlmApiRequestType | "*")[] = [
-    "list",
-    "streamChat",
+    "list"
+    // "streamChat" removed so we use OCA's native streaming with custom fields
   ];
 
   protected _convertModelName(model: string): string {
@@ -175,19 +174,43 @@ class Oca extends BaseLLM {
       signal,
     });
 
+    let responseOpcRequestId: string | undefined = undefined;
+    if (typeof response.headers?.get === "function") {
+      const raw = response.headers.get("opc-request-id");
+      console.log(
+        "[OPC DEBUG] raw response header opc-request-id:",
+        raw
+      );
+      responseOpcRequestId = raw !== null ? raw : undefined;
+      console.log(
+        "[OPC DEBUG] RESPONSE HEADER: opc-request-id (final value):",
+        responseOpcRequestId
+      );
+    }
+
     // Handle non-streaming response
     if (body.stream === false) {
       if (response.status === 499) {
         return; // Aborted by user
       }
       const data = await response.json();
-      yield data.choices[0].message;
+      if (data.choices && data.choices[0] && data.choices[0].message) {
+        const msg = data.choices[0].message;
+        if (msg.role === "assistant") {
+          (msg as any).opcRequestId = responseOpcRequestId;
+          console.log("[OPC DEBUG] attached opcRequestId to yielded msg:", responseOpcRequestId);
+        }
+        console.log("[OPC DEBUG] yielding msg:", JSON.stringify(msg, null, 2));
+        yield msg;
+      }
       return;
     }
 
     for await (const value of streamSse(response)) {
-      const chunk = fromChatCompletionChunk(value);
+      const chunk = fromChatCompletionChunk(value, responseOpcRequestId);
       if (chunk) {
+        console.log("[OPC DEBUG] yielding streamed chunk:", JSON.stringify(chunk, null, 2));
+        console.log("[OCA _streamChat] yielding chunk", JSON.stringify(chunk, null, 2));
         yield chunk;
       }
     }
diff --git a/core/llm/openaiTypeConverters.ts b/core/llm/openaiTypeConverters.ts
index a24af02f7f0..92afed6521d 100644
--- a/core/llm/openaiTypeConverters.ts
+++ b/core/llm/openaiTypeConverters.ts
@@ -170,13 +170,15 @@ export function fromChatResponse(response: ChatCompletion): ChatMessage {
 
 export function fromChatCompletionChunk(
   chunk: ChatCompletionChunk,
+  opcRequestId?: string
 ): ChatMessage | undefined {
+  console.log("openaiTypeConverters : opcRequestId ", opcRequestId)
   const delta = chunk.choices?.[0]?.delta;
-
   if (delta?.content) {
     return {
       role: "assistant",
       content: delta.content,
+      opcRequestId: opcRequestId
     };
   } else if (delta?.tool_calls) {
     return {
@@ -190,6 +192,7 @@ export function fromChatCompletionChunk(
           arguments: tool_call.function?.arguments,
         },
       })),
+      opcRequestId: opcRequestId
     };
   }
 
diff --git a/core/llm/streamChat.ts b/core/llm/streamChat.ts
index 2692195e226..264c644e139 100644
--- a/core/llm/streamChat.ts
+++ b/core/llm/streamChat.ts
@@ -105,10 +105,14 @@ export async function* llmStreamChat(
         break;
       }
       if (next.value) {
-        yield {
-          role: "assistant",
-          content: next.value,
-        };
+        if (typeof next.value === "object" && next.value !== null) {
+          yield next.value;
+        } else {
+          yield {
+            role: "assistant",
+            content: typeof next.value === "string" ? next.value : String(next.value),
+          };
+        }
       }
       next = await gen.next();
     }
@@ -137,7 +141,7 @@ export async function* llmStreamChat(
       next = await gen.next();
     }
     if (config.experimental?.readResponseTTS && "completion" in next.value) {
-      void TTS.read(next.value?.completion);
+      void TTS.read(typeof next.value?.completion === "string" ? next.value?.completion : String(next.value?.completion));
     }
 
     void Telemetry.capture(
diff --git a/extensions/vscode/src/webviewProtocol.ts b/extensions/vscode/src/webviewProtocol.ts
index 324219a516c..59ef09aa1ec 100644
--- a/extensions/vscode/src/webviewProtocol.ts
+++ b/extensions/vscode/src/webviewProtocol.ts
@@ -70,6 +70,8 @@ export class VsCodeWebviewProtocol
           ) {
             let next = await response.next();
             while (!next.done) {
+              console.log("webview_content", next)
+              console.log("[webviewProtocol] yielding chunk from extension", JSON.stringify(next.value, null, 2));
               respond({
                 done: false,
                 content: next.value,
@@ -77,6 +79,7 @@ export class VsCodeWebviewProtocol
               });
               next = await response.next();
             }
+            console.log("webview_content", next)
             respond({
               done: true,
               content: next.value,
diff --git a/gui/src/components/StepContainer/ResponseActions.tsx b/gui/src/components/StepContainer/ResponseActions.tsx
index 0684327925c..1a3348d88f5 100644
--- a/gui/src/components/StepContainer/ResponseActions.tsx
+++ b/gui/src/components/StepContainer/ResponseActions.tsx
@@ -121,6 +121,27 @@ export default function ResponseActions({
         checkIconClassName="h-3.5 w-3.5 text-success"
       />
 
+      {/* Show Copy button for Oracle opcRequestId if present */}
+      {item.message.role === "assistant" &&
+        !!(item.message as import("core").AssistantChatMessage).opcRequestId && (
+          <HeaderButtonWithToolTip
+            text="Copy Oracle opcRequestId"
+            tabIndex={-1}
+            onClick={() =>
+              navigator.clipboard.writeText(
+                (item.message as import("core").AssistantChatMessage).opcRequestId!
+              )
+            }
+          >
+            <CopyIconButton
+              tabIndex={-1}
+              text={(item.message as import("core").AssistantChatMessage).opcRequestId!}
+              clipboardIconClassName="h-3.5 w-3.5 text-blue-500"
+              checkIconClassName="h-3.5 w-3.5 text-success"
+            />
+          </HeaderButtonWithToolTip>
+        )}
+
       <FeedbackButtons item={item} />
     </div>
   );
diff --git a/gui/src/components/StepContainer/StepContainer.tsx b/gui/src/components/StepContainer/StepContainer.tsx
index 84d68193681..452911d0c23 100644
--- a/gui/src/components/StepContainer/StepContainer.tsx
+++ b/gui/src/components/StepContainer/StepContainer.tsx
@@ -86,6 +86,18 @@ export default function StepContainer(props: StepContainerProps) {
       "*",
     );
   }
+  const message = props.item.message;
+  const opcRequestId =
+    message.role === "assistant"
+      ? (message as import("core").AssistantChatMessage).opcRequestId
+      : undefined;
+  // console.log(
+  //   "STEP Container: history item at index",
+  //   props.index,
+  //   props.item,
+  //   "assistant.opcRequestId:",
+  //   opcRequestId
+  // );
 
   return (
     <div>
@@ -105,6 +117,16 @@ export default function StepContainer(props: StepContainerProps) {
               source={stripImages(props.item.message.content)}
               itemIndex={props.index}
             />
+            {/* Show Oracle opcRequestId for OCA assistant messages */}
+            {message.role === "assistant" &&
+              !!opcRequestId && (
+                <div className="text-xs text-gray-400 mt-1">
+                  Oracle opcRequestId:{" "}
+                  <span style={{ wordBreak: "break-all" }}>
+                    {opcRequestId}
+                  </span>
+                </div>
+              )}
           </>
         )}
         {props.isLast && <ThinkingIndicator historyItem={props.item} />}
diff --git a/gui/src/context/IdeMessenger.tsx b/gui/src/context/IdeMessenger.tsx
index e30f39ccf09..d6017c4d1a2 100644
--- a/gui/src/context/IdeMessenger.tsx
+++ b/gui/src/context/IdeMessenger.tsx
@@ -196,6 +196,7 @@ export class IdeMessenger implements IIdeMessenger {
     }) => {
       if (event.data.messageId === messageId) {
         const responseData = event.data.data;
+        console.log("[Webview RAW CHUNK]", JSON.stringify(responseData, null, 2));
         if ("error" in responseData) {
           error = responseData.error;
           return;
@@ -206,6 +207,7 @@ export class IdeMessenger implements IIdeMessenger {
           done = true;
           returnVal = responseData.content;
         } else {
+          console.log("[IdeMessenger] buffer.push chunk", JSON.stringify(responseData.content, null, 2));
           buffer.push(responseData.content);
         }
       }
diff --git a/gui/src/redux/slices/sessionSlice.ts b/gui/src/redux/slices/sessionSlice.ts
index 7f13b87fea5..4554f5da1f3 100644
--- a/gui/src/redux/slices/sessionSlice.ts
+++ b/gui/src/redux/slices/sessionSlice.ts
@@ -591,12 +591,15 @@ export const sessionSlice = createSlice({
             lastMessage.role !== message.role ||
             message.role === "tool" // Tool messages should always create new messages
           ) {
-            // Create a new message
+            // Create a new message, ensuring opcRequestId is preserved for assistant messages
             const historyItem: ChatHistoryItemWithMessageId = {
               message: {
                 ...message,
                 content: "", // Start with empty content, let accumulation logic handle it
                 id: uuidv4(),
+                ...(message.role === "assistant" && (message as any).opcRequestId
+                  ? { opcRequestId: (message as any).opcRequestId }
+                  : {}),
               },
               contextItems: [],
             };
@@ -606,8 +609,11 @@ export const sessionSlice = createSlice({
             lastMessage = lastItem.message;
           }
 
-          // Add to the existing message
+          // Add to the existing message; also make sure opcRequestId always stays present on assistant messages
           if (messageContent) {
+            if (lastMessage.role === "assistant" && (message as any).opcRequestId) {
+              (lastMessage as any).opcRequestId = (message as any).opcRequestId;
+            }
             if (messageContent.includes("<think>")) {
               lastItem.reasoning = {
                 startAt: Date.now(),
diff --git a/gui/src/redux/thunks/streamNormalInput.ts b/gui/src/redux/thunks/streamNormalInput.ts
index 6e95191c4d4..2b691fef453 100644
--- a/gui/src/redux/thunks/streamNormalInput.ts
+++ b/gui/src/redux/thunks/streamNormalInput.ts
@@ -229,6 +229,7 @@ export const streamNormalInput = createAsyncThunk<
         break;
       }
 
+      console.log("[streamNormalInput] dispatching chunk", JSON.stringify(next.value, null, 2));
       dispatch(streamUpdate(next.value));
       next = await gen.next();
     }