chore: update OpenAPI spec from monorepo (#756)

Co-authored-by: OpenRouter SDK Bot <sdk-bot@openrouter.ai>

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -35639,7 +35639,7 @@ paths:
       x-speakeasy-name-override: 'count'
   /models/user:
     get:
-      description: 'List models filtered by user provider preferences, [privacy settings](https://openrouter.ai/docs/guides/privacy/provider-logging), and [guardrails](https://openrouter.ai/docs/guides/features/guardrails). If requesting through a regional hostname, the results will be filtered to models that satisfy in-region routing for that region.'
+      description: 'List models filtered by user provider preferences, [privacy settings](https://openrouter.ai/docs/guides/privacy/provider-logging), and [guardrails](https://openrouter.ai/docs/guides/features/guardrails). Returns text-output models by default; pass `output_modalities` (e.g. `image,audio,embeddings` or `all`) to include other modalities. If requesting through a regional hostname, the results will be filtered to models that satisfy in-region routing for that region.'
       operationId: 'listModelsUser'
       parameters:
         - description: 'Number of records to skip for pagination. When both offset and limit are omitted, the full list is returned'
@@ -35665,6 +35665,14 @@ paths:
             maximum: 1000
             minimum: 1
             type: 'integer'
+        - description: 'Filter models by output modality. Accepts a comma-separated list of modalities (text, image, audio, embeddings) or "all" to include all models. Defaults to "text".'
+          in: 'query'
+          name: 'output_modalities'
+          required: false
+          schema:
+            description: 'Filter models by output modality. Accepts a comma-separated list of modalities (text, image, audio, embeddings) or "all" to include all models. Defaults to "text".'
+            example: 'text'
+            type: 'string'
       responses:
         '200':
           content: