diff --git a/litellm/llms/sail_research/responses/transformation.py b/litellm/llms/sail_research/responses/transformation.py
index 449086e3109..816e2daa77a 100644
--- a/litellm/llms/sail_research/responses/transformation.py
+++ b/litellm/llms/sail_research/responses/transformation.py
@@ -12,11 +12,8 @@ Sail is a responses-only provider. Key differences from vanilla OpenAI:
 Ref: https://api.sailresearch.com
 """
 
-from typing import Any, Dict, List, Optional, Union
+from typing import Dict, Optional, Union
 
-import httpx
-
-from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
 from litellm.llms.openai.responses.transformation import OpenAIResponsesAPIConfig
 from litellm.secret_managers.main import get_secret_str
 from litellm.types.llms.openai import ResponseInputParam
@@ -95,7 +92,11 @@ class SailResearchResponsesConfig(OpenAIResponsesAPIConfig):
                 }
 
         # Never send stream: true to Sail
-        response_api_optional_request_params.pop("stream", None)
+        response_api_optional_request_params = {
+            k: v
+            for k, v in response_api_optional_request_params.items()
+            if k != "stream"
+        }
 
         return super().transform_responses_api_request(
             model=model,
diff --git a/tests/test_litellm/llms/sail_research/responses/test_sail_research_responses_transformation.py b/tests/test_litellm/llms/sail_research/responses/test_sail_research_responses_transformation.py
index d10f3bfd63f..a0f10084c74 100644
--- a/tests/test_litellm/llms/sail_research/responses/test_sail_research_responses_transformation.py
+++ b/tests/test_litellm/llms/sail_research/responses/test_sail_research_responses_transformation.py
@@ -15,10 +15,12 @@ import pytest
 
 sys.path.insert(0, os.path.abspath("../../../../.."))
 
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
 from litellm.llms.sail_research.responses.transformation import (
     SailResearchResponsesConfig,
 )
 from litellm.types.llms.openai import ResponsesAPIOptionalRequestParams
+from litellm.types.router import GenericLiteLLMParams
 from litellm.types.utils import LlmProviders
 from litellm.utils import ProviderConfigManager
 
@@ -225,7 +227,6 @@ class TestSailResearchResponsesTransformation:
     def test_validate_environment_sets_auth_header(self):
         """API key is set in Authorization header"""
         config = SailResearchResponsesConfig()
-        from litellm.types.router import GenericLiteLLMParams
 
         headers = config.validate_environment(
             headers={},
@@ -237,10 +238,6 @@ class TestSailResearchResponsesTransformation:
 
     def test_successful_response_passes_through(self):
         """Normal completed response delegates to base OpenAI handler"""
-        from litellm.litellm_core_utils.litellm_logging import (
-            Logging as LiteLLMLoggingObj,
-        )
-
         config = SailResearchResponsesConfig()
 
         success_body = {