fix(litellm): derive video input modality from supports_video_input

src/types/index.ts

@@ -27,6 +27,7 @@ export interface LiteLLMModelInfo {
   supports_max_reasoning_effort?: boolean | null
   supported_openai_params?: string[] | null
   supports_vision?: boolean | null
+  supports_video_input?: boolean | null
   modalities?: {
     input?: string[] | null
     output?: string[] | null

src/utils/model-info/litellm.ts

@@ -95,9 +95,16 @@ function buildModalities(info: LiteLLMModelInfo): { input: string[]; output: str
   if (input || output) {
     return { input: input ?? ['text'], output: output ?? ['text'] }
   }
-  // Older LiteLLM deployments do not expose modalities; derive image input from supports_vision.
-  if (info.supports_vision === true) {
-    return { input: ['text', 'image'], output: ['text'] }
+  // Older LiteLLM deployments do not expose modalities; derive inputs from the capability flags.
+  if (info.supports_vision === true || info.supports_video_input === true) {
+    return {
+      input: [
+        'text',
+        ...(info.supports_vision === true ? ['image'] : []),
+        ...(info.supports_video_input === true ? ['video'] : []),
+      ],
+      output: ['text'],
+    }
   }
   return undefined
 }

test/litellm-model-info.test.ts

@@ -16,6 +16,20 @@ describe('native LiteLLM enricher', () => {
     expect(enrich({ supports_vision: true }).modalities).toEqual({ input: ['text', 'image'], output: ['text'] })
   })
 
+  it('derives video input from supports_video_input', () => {
+    expect(enrich({ supports_video_input: true }).modalities).toEqual({ input: ['text', 'video'], output: ['text'] })
+  })
+
+  it('combines vision and video capability flags', () => {
+    expect(enrich({ supports_vision: true, supports_video_input: true }).modalities)
+      .toEqual({ input: ['text', 'image', 'video'], output: ['text'] })
+  })
+
+  it('prefers declared modalities over capability flags', () => {
+    expect(enrich({ modalities: { input: ['text'] }, supports_vision: true, supports_video_input: true }).modalities)
+      .toEqual({ input: ['text'], output: ['text'] })
+  })
+
   it('defaults a missing modality side to text', () => {
     expect(enrich({ modalities: { input: ['text', 'image'] } }).modalities)
       .toEqual({ input: ['text', 'image'], output: ['text'] })