From e5ca61d0263bf7d2ddf9813563031529102a1756 Mon Sep 17 00:00:00 2001
From: Teddy Amkie <38896345+TeddyAmkie@users.noreply.github.com>
Date: Mon, 6 Oct 2025 19:57:21 -0700
Subject: [PATCH] feat: add stop parameter to non-supported params for GPT-5
 (#15244)

- Add 'stop' parameter to the non_supported_params list in OpenAIGPT5Config
- This ensures the stop parameter is automatically dropped when calling GPT-5 models
- Resolves issue where stop parameter was not being stripped for GPT-5
---
 litellm/llms/openai/chat/gpt_5_transformation.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/litellm/llms/openai/chat/gpt_5_transformation.py b/litellm/llms/openai/chat/gpt_5_transformation.py
index fa357c1bd22..183f60debbd 100644
--- a/litellm/llms/openai/chat/gpt_5_transformation.py
+++ b/litellm/llms/openai/chat/gpt_5_transformation.py
@@ -41,6 +41,7 @@ class OpenAIGPT5Config(OpenAIGPTConfig):
             "presence_penalty",
             "frequency_penalty",
             "top_logprobs",
+            "stop",
         ]
 
         return [