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fix: also strip reasoning_content from Mistral messages

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Fixes #30835 — reasoning_content in assistant messages causes
422 extra_forbidden when forwarded to Mistral API.
This commit is contained in:
factnn 2026-06-21 15:56:43 +08:00
parent 159a5e47f7
commit d600d7a668
2 changed files with 4 additions and 0 deletions
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2
litellm/llms/mistral/chat/transformation.py
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@ -272,6 +272,7 @@ class MistralConfig(OpenAIGPTConfig):
m.pop("provider_specific_fields", None)
m.pop("thinking_blocks", None)
m.pop("cache_control", None)
m.pop("reasoning_content", None)
new_messages.append(m)
if is_async:
@ -306,6 +307,7 @@ class MistralConfig(OpenAIGPTConfig):
m.pop("provider_specific_fields", None)
m.pop("thinking_blocks", None)
m.pop("cache_control", None)
m.pop("reasoning_content", None)
return messages
def _handle_message_with_file(self, messages: List[AllMessageValues]) -> List[AllMessageValues]:

2
tests/test_litellm/llms/mistral/test_mistral_chat_transformation.py
View file

@ -266,6 +266,7 @@ class TestMistralReasoningSupport:
"provider_specific_fields": {"foo": "bar"},
"thinking_blocks": [],
"cache_control": {"type": "ephemeral"},
"reasoning_content": "some thinking",
},
)
]
@ -278,6 +279,7 @@ class TestMistralReasoningSupport:
assert "provider_specific_fields" not in msg
assert "thinking_blocks" not in msg
assert "cache_control" not in msg
assert "reasoning_content" not in msg
def test_transform_request_magistral_with_reasoning(self):
"""Test transform_request method for magistral model with reasoning."""