diff --git a/.stats.yml b/.stats.yml
index 4afc77d..d6835ad 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,2 +1,2 @@
 configured_endpoints: 7
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/groqcloud%2Fgroqcloud-f9e32d675c53d0c72f862e43ce3f7d1be32348120d4ae83abf87affe3f9730f6.yml
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/groqcloud%2Fgroqcloud-97f285924b8a293952e67185d5d8a0cef2b7ad6080b34c4c4b233f335d6fb4d2.yml
diff --git a/src/resources/audio/transcriptions.ts b/src/resources/audio/transcriptions.ts
index 24426e7..1672954 100644
--- a/src/resources/audio/transcriptions.ts
+++ b/src/resources/audio/transcriptions.ts
@@ -173,10 +173,10 @@ export interface TranscriptionCreateParams {
   prompt?: string;
 
   /**
-   * The format of the transcript output, in one of these options: `json`, `text`,
-   * `srt`, `verbose_json`, or `vtt`.
+   * The format of the transcript output, in one of these options: `json`, `text`, or
+   * `verbose_json`.
    */
-  response_format?: 'json' | 'text' | 'srt' | 'verbose_json' | 'vtt';
+  response_format?: 'json' | 'text' | 'verbose_json';
 
   /**
    * The sampling temperature, between 0 and 1. Higher values like 0.8 will make the
diff --git a/src/resources/audio/translations.ts b/src/resources/audio/translations.ts
index 243c2bd..592f4c1 100644
--- a/src/resources/audio/translations.ts
+++ b/src/resources/audio/translations.ts
@@ -130,9 +130,9 @@ export interface TranslationCreateParams {
 
   /**
    * The format of the transcript output, in one of these options: `json`, `text`,
-   * `srt`, `verbose_json`, or `vtt`.
+   * `verbose_json`, or `vtt`.
    */
-  response_format?: string;
+  response_format?: 'json' | 'text' | 'verbose_json';
 
   /**
    * The sampling temperature, between 0 and 1. Higher values like 0.8 will make the
diff --git a/src/resources/chat/completions.ts b/src/resources/chat/completions.ts
index 521c74e..c5557c9 100644
--- a/src/resources/chat/completions.ts
+++ b/src/resources/chat/completions.ts
@@ -543,9 +543,9 @@ export namespace CompletionCreateParams {
   }
 
   export interface ChatToolChoice {
-    function?: ChatToolChoice.Function;
+    function: ChatToolChoice.Function;
 
-    type?: string;
+    type: 'function';
   }
 
   export namespace ChatToolChoice {
@@ -553,21 +553,21 @@ export namespace CompletionCreateParams {
       /**
        * The name of the function to call.
        */
-      name?: string;
+      name: string;
     }
   }
 
   export interface Tool {
-    function?: Tool.Function;
+    function: Tool.Function;
 
-    type?: string;
+    type: 'function';
   }
 
   export namespace Tool {
     export interface Function {
-      description?: string;
+      name: string;
 
-      name?: string;
+      description?: string;
 
       parameters?: Record<string, unknown>;
     }
diff --git a/tests/api-resources/audio/translations.test.ts b/tests/api-resources/audio/translations.test.ts
index 1ee59cc..12e391e 100644
--- a/tests/api-resources/audio/translations.test.ts
+++ b/tests/api-resources/audio/translations.test.ts
@@ -28,7 +28,7 @@ describe('resource translations', () => {
       file: await toFile(Buffer.from('# my file contents'), 'README.md'),
       model: 'whisper-1',
       prompt: 'string',
-      response_format: 'string',
+      response_format: 'json',
       temperature: 0,
     });
   });
diff --git a/tests/api-resources/chat/completions.test.ts b/tests/api-resources/chat/completions.test.ts
index bc71fa1..f4e5c72 100644
--- a/tests/api-resources/chat/completions.test.ts
+++ b/tests/api-resources/chat/completions.test.ts
@@ -54,9 +54,9 @@ describe('resource completions', () => {
       temperature: 0,
       tool_choice: 'none',
       tools: [
-        { function: { description: 'string', name: 'string', parameters: { foo: 'bar' } }, type: 'string' },
-        { function: { description: 'string', name: 'string', parameters: { foo: 'bar' } }, type: 'string' },
-        { function: { description: 'string', name: 'string', parameters: { foo: 'bar' } }, type: 'string' },
+        { function: { description: 'string', name: 'string', parameters: { foo: 'bar' } }, type: 'function' },
+        { function: { description: 'string', name: 'string', parameters: { foo: 'bar' } }, type: 'function' },
+        { function: { description: 'string', name: 'string', parameters: { foo: 'bar' } }, type: 'function' },
       ],
       top_logprobs: 0,
       top_p: 0,