diff --git a/src/renderer/src/aiCore/utils/options.ts b/src/renderer/src/aiCore/utils/options.ts
index 8dc7a10af9..1a16ea05da 100644
--- a/src/renderer/src/aiCore/utils/options.ts
+++ b/src/renderer/src/aiCore/utils/options.ts
@@ -3,7 +3,7 @@ import { type AnthropicProviderOptions } from '@ai-sdk/anthropic'
 import type { GoogleGenerativeAIProviderOptions } from '@ai-sdk/google'
 import type { OpenAIResponsesProviderOptions } from '@ai-sdk/openai'
 import type { XaiProviderOptions } from '@ai-sdk/xai'
-import { baseProviderIdSchema, customProviderIdSchema } from '@cherrystudio/ai-core/provider'
+import { baseProviderIdSchema, customProviderIdSchema, hasProviderConfig } from '@cherrystudio/ai-core/provider'
 import { loggerService } from '@logger'
 import {
   getModelSupportedVerbosity,
@@ -616,9 +616,14 @@ function buildGenericProviderOptions(
   }
   if (enableReasoning) {
     if (isInterleavedThinkingModel(model)) {
-      providerOptions = {
-        ...providerOptions,
-        sendReasoning: true
+      // sendReasoning is a patch specific to @ai-sdk/openai-compatible
+      // Only apply when provider will actually use openai-compatible SDK
+      // (i.e., no dedicated SDK registered OR explicitly openai-compatible)
+      if (!hasProviderConfig(providerId) || providerId === 'openai-compatible') {
+        providerOptions = {
+          ...providerOptions,
+          sendReasoning: true
+        }
       }
     }
   }