From a4a1079510a4c8ad4ec2765ef38ec21716523ce1 Mon Sep 17 00:00:00 2001
From: Stephen Chin <1290231+steveonjava@users.noreply.github.com>
Date: Thu, 20 Aug 2026 06:20:50 -0700
Subject: [PATCH] fix(chatgpt): forward native compaction config

---
 litellm/llms/chatgpt/responses/transformation.py          | 1 +
 .../responses/test_chatgpt_responses_transformation.py    | 8 ++++----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/litellm/llms/chatgpt/responses/transformation.py b/litellm/llms/chatgpt/responses/transformation.py
index da4c5598d80..62dfd65fd6c 100644
--- a/litellm/llms/chatgpt/responses/transformation.py
+++ b/litellm/llms/chatgpt/responses/transformation.py
@@ -98,6 +98,7 @@ class ChatGPTResponsesAPIConfig(OpenAIResponsesAPIConfig):
             "tool_choice",
             "reasoning",
             "prompt_cache_key",
+            "context_management",
             "previous_response_id",
             "truncation",
         }
diff --git a/tests/test_litellm/llms/chatgpt/responses/test_chatgpt_responses_transformation.py b/tests/test_litellm/llms/chatgpt/responses/test_chatgpt_responses_transformation.py
index efced02dbaf..f8f485467b8 100644
--- a/tests/test_litellm/llms/chatgpt/responses/test_chatgpt_responses_transformation.py
+++ b/tests/test_litellm/llms/chatgpt/responses/test_chatgpt_responses_transformation.py
@@ -124,14 +124,12 @@ class TestChatGPTResponsesAPITransformation:
                 "user": "user_123",
                 "temperature": 0.2,
                 "top_p": 0.9,
-                "context_management": [
-                    {"type": "compaction", "compact_threshold": 200000}
-                ],
                 "metadata": {"foo": "bar"},
                 "max_output_tokens": 123,
                 "stream_options": {"include_usage": True},
                 # supported and should be preserved
                 "prompt_cache_key": "session_123",
+                "context_management": [{"type": "compaction", "compact_threshold": 200000}],
                 "truncation": "auto",
                 "previous_response_id": "resp_123",
                 "reasoning": {"effort": "medium"},
@@ -145,12 +143,14 @@ class TestChatGPTResponsesAPITransformation:
         assert "user" not in request
         assert "temperature" not in request
         assert "top_p" not in request
-        assert "context_management" not in request
         assert "metadata" not in request
         assert "max_output_tokens" not in request
         assert "stream_options" not in request
 
         assert request["prompt_cache_key"] == "session_123"
+        assert request["context_management"] == [
+            {"type": "compaction", "compact_threshold": 200000}
+        ]
         assert request["truncation"] == "auto"
         assert request["previous_response_id"] == "resp_123"
         assert request["reasoning"] == {"effort": "medium"}