diff --git a/src/renderer/src/aiCore/legacy/clients/openai/OpenAIApiClient.ts b/src/renderer/src/aiCore/legacy/clients/openai/OpenAIApiClient.ts
index 8ff25e356d..ac3b2fe96d 100644
--- a/src/renderer/src/aiCore/legacy/clients/openai/OpenAIApiClient.ts
+++ b/src/renderer/src/aiCore/legacy/clients/openai/OpenAIApiClient.ts
@@ -306,6 +306,13 @@ export class OpenAIAPIClient extends OpenAIBaseClient<
 
     // Grok models/Perplexity models/OpenAI models
     if (isSupportedReasoningEffortModel(model)) {
+      // For OpenAI models (GPT-5, o1, o3, o4, etc), use the base class implementation
+      // which returns the correct { reasoning: { effort, summary } } format
+      if (isSupportedReasoningEffortOpenAIModel(model)) {
+        return super.getReasoningEffort(assistant, model)
+      }
+      
+      // For non-OpenAI models (Grok, Perplexity, etc), use reasoning_effort parameter
       // 检查模型是否支持所选选项
       const modelType = getThinkModelType(model)
       const supportedOptions = MODEL_SUPPORTED_REASONING_EFFORT[modelType]