fix(api): fix phase enum

stainless-app[bot] · stainless-app[bot] · commit e43bcdacdff6 · 2026-02-24T19:53:10.000Z
diff --git a/.stats.yml b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 147
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-242cfb8a5a0690f8aa7ab4c356d296ef86d87eaf2b79910b93a85859f5c5e311.yml
-openapi_spec_hash: 58c8149e0e302c6e061157d46c3ef8a1
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/openai%2Fopenai-6bfe886b5ded0fe3bf37ca672698814e16e0836a093ceef65dac37ae44d1ad6b.yml
+openapi_spec_hash: 6b1344a59044318e824c8d1af96033c7
 config_hash: 7f49c38fa3abe9b7038ffe62262c4912
diff --git a/src/resources/responses/responses.ts b/src/resources/responses/responses.ts
@@ -422,12 +422,14 @@ export interface EasyInputMessage {
   role: 'user' | 'assistant' | 'system' | 'developer';
 
   /**
-   * Labels an `assistant` message as intermediate commentary (`commentary`) or the
-   * final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when
-   * sending follow-up requests, preserve and resend phase on all assistant messages
-   * — dropping it can degrade performance. Not used for user messages.
+   * The phase of an assistant message.
+   *
+   * Use `commentary` for an intermediate assistant message and `final_answer` for
+   * the final assistant message. For follow-up requests with models like
+   * `gpt-5.3-codex` and later, preserve and resend phase on all assistant messages.
+   * Omitting it can degrade performance. Not used for user messages.
    */
-  phase?: 'commentary' | null;
+  phase?: 'commentary' | 'final_answer' | null;
 
   /**
    * The type of the message input. Always `message`.
@@ -4751,12 +4753,14 @@ export interface ResponseOutputMessage {
   type: 'message';
 
   /**
-   * Labels an `assistant` message as intermediate commentary (`commentary`) or the
-   * final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when
-   * sending follow-up requests, preserve and resend phase on all assistant messages
-   * — dropping it can degrade performance. Not used for user messages.
+   * The phase of an assistant message.
+   *
+   * Use `commentary` for an intermediate assistant message and `final_answer` for
+   * the final assistant message. For follow-up requests with models like
+   * `gpt-5.3-codex` and later, preserve and resend phase on all assistant messages.
+   * Omitting it can degrade performance. Not used for user messages.
    */
-  phase?: 'commentary' | null;
+  phase?: 'commentary' | 'final_answer' | null;
 }
 
 /**
