diff --git a/.stats.yml b/.stats.yml
index eb81a249f..a6c08f499 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 64
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai-ff436357b12348b7c1c930469332a79cd23ac6ec537e645c411893c42de42e57.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai-c085faf70d6ff059fbe11b7b6b98123a612524cb9b8a6f649c99526e5b0b1bdb.yml
diff --git a/src/resources/beta/threads/messages.ts b/src/resources/beta/threads/messages.ts
index a5307edbe..4bbdc7426 100644
--- a/src/resources/beta/threads/messages.ts
+++ b/src/resources/beta/threads/messages.ts
@@ -459,7 +459,16 @@ export namespace Message {
     /**
      * The tools to add this file to.
      */
-    tools?: Array<AssistantsAPI.CodeInterpreterTool | AssistantsAPI.FileSearchTool>;
+    tools?: Array<AssistantsAPI.CodeInterpreterTool | Attachment.AssistantToolsFileSearchTypeOnly>;
+  }
+
+  export namespace Attachment {
+    export interface AssistantToolsFileSearchTypeOnly {
+      /**
+       * The type of tool being defined: `file_search`
+       */
+      type: 'file_search';
+    }
   }
 
   /**
@@ -637,7 +646,16 @@ export namespace MessageCreateParams {
     /**
      * The tools to add this file to.
      */
-    tools?: Array<AssistantsAPI.CodeInterpreterTool | AssistantsAPI.FileSearchTool>;
+    tools?: Array<AssistantsAPI.CodeInterpreterTool | Attachment.FileSearch>;
+  }
+
+  export namespace Attachment {
+    export interface FileSearch {
+      /**
+       * The type of tool being defined: `file_search`
+       */
+      type: 'file_search';
+    }
   }
 }
 
diff --git a/src/resources/beta/threads/runs/runs.ts b/src/resources/beta/threads/runs/runs.ts
index ad9e783c7..ac90147cc 100644
--- a/src/resources/beta/threads/runs/runs.ts
+++ b/src/resources/beta/threads/runs/runs.ts
@@ -278,7 +278,7 @@ export interface Run {
 
   /**
    * Whether to enable
-   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
    * during tool use.
    */
   parallel_tool_calls: boolean;
@@ -568,7 +568,7 @@ export interface RunCreateParamsBase {
 
   /**
    * Whether to enable
-   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
    * during tool use.
    */
   parallel_tool_calls?: boolean;
@@ -680,7 +680,16 @@ export namespace RunCreateParams {
       /**
        * The tools to add this file to.
        */
-      tools?: Array<AssistantsAPI.CodeInterpreterTool | AssistantsAPI.FileSearchTool>;
+      tools?: Array<AssistantsAPI.CodeInterpreterTool | Attachment.FileSearch>;
+    }
+
+    export namespace Attachment {
+      export interface FileSearch {
+        /**
+         * The type of tool being defined: `file_search`
+         */
+        type: 'file_search';
+      }
     }
   }
 
diff --git a/src/resources/beta/threads/threads.ts b/src/resources/beta/threads/threads.ts
index 5e717a7e6..af07fc4eb 100644
--- a/src/resources/beta/threads/threads.ts
+++ b/src/resources/beta/threads/threads.ts
@@ -299,7 +299,16 @@ export namespace ThreadCreateParams {
       /**
        * The tools to add this file to.
        */
-      tools?: Array<AssistantsAPI.CodeInterpreterTool | AssistantsAPI.FileSearchTool>;
+      tools?: Array<AssistantsAPI.CodeInterpreterTool | Attachment.FileSearch>;
+    }
+
+    export namespace Attachment {
+      export interface FileSearch {
+        /**
+         * The type of tool being defined: `file_search`
+         */
+        type: 'file_search';
+      }
     }
   }
 
@@ -538,7 +547,7 @@ export interface ThreadCreateAndRunParamsBase {
 
   /**
    * Whether to enable
-   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
    * during tool use.
    */
   parallel_tool_calls?: boolean;
@@ -693,7 +702,16 @@ export namespace ThreadCreateAndRunParams {
         /**
          * The tools to add this file to.
          */
-        tools?: Array<AssistantsAPI.CodeInterpreterTool | AssistantsAPI.FileSearchTool>;
+        tools?: Array<AssistantsAPI.CodeInterpreterTool | Attachment.FileSearch>;
+      }
+
+      export namespace Attachment {
+        export interface FileSearch {
+          /**
+           * The type of tool being defined: `file_search`
+           */
+          type: 'file_search';
+        }
       }
     }
 
diff --git a/src/resources/chat/completions.ts b/src/resources/chat/completions.ts
index eeaab3d70..b7c301f4e 100644
--- a/src/resources/chat/completions.ts
+++ b/src/resources/chat/completions.ts
@@ -759,7 +759,7 @@ export interface ChatCompletionCreateParamsBase {
 
   /**
    * Whether to enable
-   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling)
+   * [parallel function calling](https://platform.openai.com/docs/guides/function-calling/parallel-function-calling)
    * during tool use.
    */
   parallel_tool_calls?: boolean;