diff --git a/litellm/llms/bedrock/chat/invoke_transformations/anthropic_claude3_transformation.py b/litellm/llms/bedrock/chat/invoke_transformations/anthropic_claude3_transformation.py
index 02f0579c845..7a95356d054 100644
--- a/litellm/llms/bedrock/chat/invoke_transformations/anthropic_claude3_transformation.py
+++ b/litellm/llms/bedrock/chat/invoke_transformations/anthropic_claude3_transformation.py
@@ -170,8 +170,13 @@ class AmazonAnthropicClaudeConfig(AmazonInvokeConfig, AnthropicConfig):
         anthropic_request.pop("model", None)
         anthropic_request.pop("stream", None)
         anthropic_request.pop("output_format", None)
-        if not _supports_factory(
-            model=model, custom_llm_provider="bedrock", key="supports_output_config"
+        if not (
+            _supports_factory(
+                model=model,
+                custom_llm_provider=None,
+                key="supports_output_config",
+            )
+            or AnthropicConfig._model_supports_effort_param(model)
         ):
             anthropic_request.pop("output_config", None)
         if "anthropic_version" not in anthropic_request:
diff --git a/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py b/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
index a17b158f4a0..49f4bbfb440 100644
--- a/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
+++ b/litellm/llms/bedrock/messages/invoke_transformations/anthropic_claude3_transformation.py
@@ -561,8 +561,13 @@ class AmazonAnthropicClaudeMessagesConfig(
         # 5b. Bedrock Invoke supports output_config (effort) for Claude 4.6+ models,
         # but older models do not — strip it to avoid request rejection.
         # Ref: https://github.com/BerriAI/litellm/issues/22797
-        if not _supports_factory(
-            model=model, custom_llm_provider="bedrock", key="supports_output_config"
+        if not (
+            _supports_factory(
+                model=model,
+                custom_llm_provider=None,
+                key="supports_output_config",
+            )
+            or AnthropicConfig._model_supports_effort_param(model)
         ):
             anthropic_messages_request.pop("output_config", None)
 
diff --git a/litellm/llms/vertex_ai/vertex_llm_base.py b/litellm/llms/vertex_ai/vertex_llm_base.py
index ab193406aba..ae2fbafccfb 100644
--- a/litellm/llms/vertex_ai/vertex_llm_base.py
+++ b/litellm/llms/vertex_ai/vertex_llm_base.py
@@ -966,6 +966,7 @@ class VertexBase:
                                 credential_project_id,
                             )
                         )
+
                         # Clean up the entry automatically when the task finishes so
                         # that long-running proxies with many credential keys do not
                         # accumulate stale references.
diff --git a/litellm/llms/xai/chat/transformation.py b/litellm/llms/xai/chat/transformation.py
index eb445626ccd..3161e3c968c 100644
--- a/litellm/llms/xai/chat/transformation.py
+++ b/litellm/llms/xai/chat/transformation.py
@@ -226,9 +226,7 @@ class XAIChatConfig(OpenAIGPTConfig):
             verbose_logger.debug(f"Error extracting X.AI web search usage: {e}")
 
         self._fold_reasoning_tokens_into_completion(response)
-        self._normalize_openai_compatible_usage_totals(
-            getattr(response, "usage", None)
-        )
+        self._normalize_openai_compatible_usage_totals(getattr(response, "usage", None))
         return response
 
     @staticmethod
diff --git a/tests/test_litellm/llms/bedrock/chat/invoke_transformations/test_bedrock_chat_invoke_transformations_anthropic_claude3_transformation.py b/tests/test_litellm/llms/bedrock/chat/invoke_transformations/test_bedrock_chat_invoke_transformations_anthropic_claude3_transformation.py
index b2e254901f4..066a4eedf42 100644
--- a/tests/test_litellm/llms/bedrock/chat/invoke_transformations/test_bedrock_chat_invoke_transformations_anthropic_claude3_transformation.py
+++ b/tests/test_litellm/llms/bedrock/chat/invoke_transformations/test_bedrock_chat_invoke_transformations_anthropic_claude3_transformation.py
@@ -449,7 +449,7 @@ def test_bedrock_chat_invoke_checks_output_config_support_with_bedrock_provider(
 
     mock_supports_factory.assert_called_once_with(
         model="us.anthropic.claude-opus-4-7",
-        custom_llm_provider="bedrock",
+        custom_llm_provider=None,
         key="supports_output_config",
     )
     assert result["output_config"] == {"effort": "high"}
diff --git a/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py b/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py
index 6a52b5d9707..4af4f8fd50e 100644
--- a/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py
+++ b/tests/test_litellm/llms/bedrock/messages/invoke_transformations/test_anthropic_claude3_transformation.py
@@ -694,7 +694,7 @@ def test_bedrock_messages_checks_output_config_support_with_bedrock_provider():
 
     mock_supports_factory.assert_called_with(
         model="us.anthropic.claude-opus-4-7",
-        custom_llm_provider="bedrock",
+        custom_llm_provider=None,
         key="supports_output_config",
     )
     assert result["output_config"] == {"effort": "high"}
@@ -1148,7 +1148,7 @@ def test_bedrock_messages_allowlist_filters_anthropic_only_fields():
     }
 
     result = cfg.transform_anthropic_messages_request(
-        model="anthropic.claude-3-haiku-20240307-v1:0",
+        model="anthropic.claude-opus-4-7",
         messages=messages,
         anthropic_messages_optional_request_params=optional_params,
         litellm_params=GenericLiteLLMParams(),