diff --git a/app/client/platforms/openai.ts b/app/client/platforms/openai.ts
index 10bb5f48f..15313c807 100644
--- a/app/client/platforms/openai.ts
+++ b/app/client/platforms/openai.ts
@@ -312,6 +312,7 @@ export class ChatGPTApi implements LLMApi {
                 content: string;
                 tool_calls: ChatMessageTool[];
                 reasoning_content: string | null;
+                reasoning: string | null;
               };
             }>;