From 657244be1578ab23c01032a53eadf8b1478d4662 Mon Sep 17 00:00:00 2001
From: factnn <166481866+factnn@users.noreply.github.com>
Date: Mon, 22 Jun 2026 12:34:46 +0800
Subject: [PATCH] fix: deduplicate extra-field stripping, use
 _strip_extra_fields in main loop

---
 litellm/llms/mistral/chat/transformation.py | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/litellm/llms/mistral/chat/transformation.py b/litellm/llms/mistral/chat/transformation.py
index 7d5602acd2d..6e8f465da85 100644
--- a/litellm/llms/mistral/chat/transformation.py
+++ b/litellm/llms/mistral/chat/transformation.py
@@ -265,16 +265,10 @@ class MistralConfig(OpenAIGPTConfig):
             if MistralConfig._is_empty_assistant_message(m):
                 continue
             m = strip_none_values_from_message(m)  # prevents 'extra_forbidden' error
-            # GH#30882: strip fields not permitted by Mistral
-            # (additionalProperties: false on their message schema)
-            if isinstance(m, dict):
-                m.pop("metadata", None)
-                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)
 
+        new_messages = self._strip_extra_fields(new_messages)
+
         if is_async:
             return super()._transform_messages(new_messages, model, True)
         else: