diff --git a/src/resources/responses/responses.ts b/src/resources/responses/responses.ts
index d76d8f77c..bf79dc7d7 100644
--- a/src/resources/responses/responses.ts
+++ b/src/resources/responses/responses.ts
@@ -8200,6 +8200,7 @@ export interface ResponseCompactParams {
     | 'gpt-5.1-2025-11-13'
     | 'gpt-5.1-codex'
     | 'gpt-5.1-mini'
+    | 'gpt-5.1-codex-mini'
     | 'gpt-5.1-chat-latest'
     | 'gpt-5'
     | 'gpt-5-mini'
diff --git a/src/resources/shared.ts b/src/resources/shared.ts
index 05bc86524..774d485d5 100644
--- a/src/resources/shared.ts
+++ b/src/resources/shared.ts
@@ -34,6 +34,7 @@ export type ChatModel =
   | 'gpt-5.1-2025-11-13'
   | 'gpt-5.1-codex'
   | 'gpt-5.1-mini'
+  | 'gpt-5.1-codex-mini'
   | 'gpt-5.1-chat-latest'
   | 'gpt-5'
   | 'gpt-5-mini'