From bfee7f0b58f960b7effe86b784cd33b9502a560c Mon Sep 17 00:00:00 2001 From: Chesars Date: Sun, 22 Mar 2026 18:37:34 -0300 Subject: [PATCH] fix: improve error message for supports-none models with temperature --- litellm/llms/openai/responses/transformation.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/litellm/llms/openai/responses/transformation.py b/litellm/llms/openai/responses/transformation.py index bfcf0959f9..03e09b039d 100644 --- a/litellm/llms/openai/responses/transformation.py +++ b/litellm/llms/openai/responses/transformation.py @@ -87,6 +87,8 @@ class OpenAIResponsesAPIConfig(BaseResponsesAPIConfig): message=( "gpt-5 models don't support temperature={}. " "Only temperature=1 is supported. " + "For models like gpt-5.1/5.4, temperature is supported " + "when reasoning.effort='none' (or not specified). " "To drop unsupported params set `litellm.drop_params = True`" ).format(temperature), status_code=400,