From fce6f976b0dbe1de72e137a9cc6e272d5a475184 Mon Sep 17 00:00:00 2001
From: Sushant Kumar <sushant.kumar@simpplr.com>
Date: Fri, 30 Oct 2026 12:31:38 +0530
Subject: [PATCH] fix(responses): give bridged reasoning items a summary and
 reasoning_text content

A chat provider's reasoning item had no summary and typed its text
output_text. The Responses API requires a summary and types reasoning text
reasoning_text, so a client that validates output items rejected it, such as
the OpenAI Agents SDK restoring a run paused for human input

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../transformation.py                                |  3 ++-
 .../test_litellm_completion_responses.py             | 12 +++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/litellm/responses/litellm_completion_transformation/transformation.py b/litellm/responses/litellm_completion_transformation/transformation.py
index ce8841c9190..c068791b8a2 100644
--- a/litellm/responses/litellm_completion_transformation/transformation.py
+++ b/litellm/responses/litellm_completion_transformation/transformation.py
@@ -3442,9 +3442,10 @@ class LiteLLMCompletionResponsesConfig:
                                 choice.finish_reason
                             ),
                             role="assistant",
+                            summary=[],
                             content=[
                                 OutputText(
-                                    type="output_text",
+                                    type="reasoning_text",
                                     text=text,
                                     annotations=[],
                                 )
diff --git a/tests/unit/responses/litellm_completion_transformation/test_litellm_completion_responses.py b/tests/unit/responses/litellm_completion_transformation/test_litellm_completion_responses.py
index 4250c78c669..c496ef65723 100644
--- a/tests/unit/responses/litellm_completion_transformation/test_litellm_completion_responses.py
+++ b/tests/unit/responses/litellm_completion_transformation/test_litellm_completion_responses.py
@@ -313,7 +313,7 @@ class TestLiteLLMCompletionResponsesConfig:
         assert reasoning_item.status == "completed"
         assert reasoning_item.role == "assistant"
         assert len(reasoning_item.content) == 1
-        assert reasoning_item.content[0].type == "output_text"
+        assert reasoning_item.content[0].type == "reasoning_text"
         assert "step by step" in reasoning_item.content[0].text
         assert "42" in reasoning_item.content[0].text
 
@@ -5432,6 +5432,16 @@ class TestBridgedOutputItemIdPrefixes:
         assert not suffix.lstrip("-").isdigit()
         assert not suffix.startswith("-")
 
+    def test_reasoning_item_is_a_responses_reasoning_item(self):
+        """A client that validates output items (the OpenAI Agents SDK restoring a paused run)
+        rejected the bridged item: it had no ``summary`` and typed its text ``output_text``."""
+        from openai.types.responses import ResponseReasoningItem
+
+        item = ResponseReasoningItem.model_validate(self._reasoning_items()[0].model_dump())
+
+        assert item.summary == []
+        assert [(part.type, part.text) for part in item.content or []] == [("reasoning_text", "thinking about fruit")]
+
 
 class TestStreamingSnapshotItemIds:
     """The response.completed snapshot must reuse the streamed item ID (issue #27333).