diff --git a/.speakeasy/in.openapi.yaml b/.speakeasy/in.openapi.yaml
index 00b78cd..397b1ea 100644
--- a/.speakeasy/in.openapi.yaml
+++ b/.speakeasy/in.openapi.yaml
@@ -3495,6 +3495,7 @@ components:
             - function
           type: object
         - $ref: '#/components/schemas/DatetimeServerTool'
+        - $ref: '#/components/schemas/ChatSearchModelsServerTool'
         - $ref: '#/components/schemas/OpenRouterWebSearchServerTool'
         - $ref: '#/components/schemas/ChatWebSearchShorthand'
       description: Tool definition for function calling (regular function or OpenRouter built-in server tool)
@@ -3936,6 +3937,22 @@ components:
         - object
         - system_fingerprint
       type: object
+    ChatSearchModelsServerTool:
+      description: 'OpenRouter built-in server tool: searches and filters AI models available on OpenRouter'
+      example:
+        parameters:
+          max_results: 5
+        type: openrouter:experimental__search_models
+      properties:
+        parameters:
+          $ref: '#/components/schemas/SearchModelsServerToolConfig'
+        type:
+          enum:
+            - openrouter:experimental__search_models
+          type: string
+      required:
+        - type
+      type: object
     ChatStreamChoice:
       description: Streaming completion choice chunk
       example:
@@ -7531,6 +7548,7 @@ components:
                   - name
                 type: object
               - $ref: '#/components/schemas/DatetimeServerTool'
+              - $ref: '#/components/schemas/ChatSearchModelsServerTool'
               - $ref: '#/components/schemas/OpenRouterWebSearchServerTool'
           type: array
         top_k:
@@ -11399,6 +11417,7 @@ components:
               - $ref: '#/components/schemas/ApplyPatchServerTool'
               - $ref: '#/components/schemas/CustomTool'
               - $ref: '#/components/schemas/DatetimeServerTool'
+              - $ref: '#/components/schemas/ChatSearchModelsServerTool'
               - $ref: '#/components/schemas/WebSearchServerTool_OpenRouter'
           type: array
         top_k:
@@ -11428,6 +11447,16 @@ components:
         - high
       example: medium
       type: string
+    SearchModelsServerToolConfig:
+      description: Configuration for the openrouter:experimental__search_models server tool
+      example:
+        max_results: 5
+      properties:
+        max_results:
+          description: Maximum number of models to return. Defaults to 5, max 20.
+          example: 5
+          type: integer
+      type: object
     SearchQualityLevel:
       description: >-
         How much context to retrieve per result. Defaults to medium (15000 chars). Only applies when using the Exa