chore: update OpenAPI spec from monorepo (#849)

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

Author: openrouter-docs-sync[bot]

.speakeasy/in.openapi.yaml

@@ -9551,6 +9551,46 @@ components:
         - 'url'
         - 'title'
       type: 'object'
+    GatewayTimeoutResponse:
+      description: 'Gateway Timeout - Provider did not respond before the upstream deadline'
+      example:
+        error:
+          code: 504
+          message: 'The operation was aborted due to timeout'
+      properties:
+        error:
+          $ref: '#/components/schemas/GatewayTimeoutResponseErrorData'
+        openrouter_metadata:
+          additionalProperties: {}
+          type:
+            - 'object'
+            - 'null'
+        user_id:
+          type:
+            - 'string'
+            - 'null'
+      required:
+        - 'error'
+      type: 'object'
+    GatewayTimeoutResponseErrorData:
+      description: 'Error data for GatewayTimeoutResponse'
+      example:
+        code: 504
+        message: 'The operation was aborted due to timeout'
+      properties:
+        code:
+          type: 'integer'
+        message:
+          type: 'string'
+        metadata:
+          additionalProperties: {}
+          type:
+            - 'object'
+            - 'null'
+      required:
+        - 'code'
+        - 'message'
+      type: 'object'
     GenerationContentData:
       description: 'Stored prompt and completion content, plus the failure error when one was stored'
       example:
@@ -29024,6 +29064,16 @@ paths:
               schema:
                 $ref: '#/components/schemas/ServiceUnavailableResponse'
           description: 'Service Unavailable - Service temporarily unavailable'
+        '504':
+          content:
+            application/json:
+              example:
+                error:
+                  code: 504
+                  message: 'The operation was aborted due to timeout'
+              schema:
+                $ref: '#/components/schemas/GatewayTimeoutResponse'
+          description: 'Gateway Timeout - Provider did not respond before the upstream deadline'
         '524':
           content:
             application/json: