diff --git a/src/tools/__tests__/evaluator.test.ts b/src/tools/__tests__/evaluator.test.ts
index 0d681061..03fa1b20 100644
--- a/src/tools/__tests__/evaluator.test.ts
+++ b/src/tools/__tests__/evaluator.test.ts
@@ -66,21 +66,6 @@ jest.mock('@ai-sdk/google', () => ({
   GoogleChatLanguageModel: jest.fn()
 }));
 
-// Mock provider utils to prevent API calls
-jest.mock('@ai-sdk/provider-utils', () => ({
-  postToApi: jest.fn().mockResolvedValue({
-    data: {
-      choices: [{
-        message: {
-          function_call: {
-            arguments: JSON.stringify(mockEvalResponse)
-          }
-        }
-      }]
-    }
-  })
-}));
-
 // Mock OpenAI API
 jest.mock('@ai-sdk/openai', () => ({
   OpenAIChatLanguageModel: jest.fn().mockImplementation(() => ({
@@ -91,6 +76,14 @@ jest.mock('@ai-sdk/openai', () => ({
   }))
 }));
 
+// Mock response handler to prevent API calls
+jest.mock('@ai-sdk/provider-utils/src/response-handler', () => ({
+  handleResponse: jest.fn().mockImplementation(() => ({
+    object: mockEvalResponse,
+    usage: { totalTokens: 0 }
+  }))
+}));
+
 jest.mock('../../utils/token-tracker');
 
 // Mock readUrl to prevent actual API calls