diff --git a/tests/test_litellm/llms/openai/responses/test_openai_responses_cost_calculation.py b/tests/test_litellm/llms/openai/responses/test_openai_responses_cost_calculation.py
index 21ec3017920..74f9ee2c660 100644
--- a/tests/test_litellm/llms/openai/responses/test_openai_responses_cost_calculation.py
+++ b/tests/test_litellm/llms/openai/responses/test_openai_responses_cost_calculation.py
@@ -2,6 +2,11 @@
 Unit tests for Responses API cost calculation functionality.
 Tests the fix for issue #26475 - ensuring cost calculation works correctly
 across all 60+ providers inheriting from OpenAIResponsesAPIConfig.
+"""
+from unittest.mock import MagicMock, patch
+
+import httpx
+import pytest
 
 from litellm.llms.openai.responses.transformation import OpenAIResponsesAPIConfig
 from litellm.types.llms.openai import (
@@ -11,7 +16,6 @@ from litellm.types.llms.openai import (
 )
 from litellm.types.utils import LlmProviders
 
-
 class TestResponsesAPICostCalculation:
     """Test suite for Responses API cost calculation across transformation paths"""