From 9da9208b202af05fe0f0a5623ee0d8ca969d7558 Mon Sep 17 00:00:00 2001
From: baonudesifeizhai <85092850+baonudesifeizhai@users.noreply.github.com>
Date: Fri, 7 Nov 2025 02:31:58 -0500
Subject: [PATCH]   [Bug] Fix missing token_ids for reasoning parser models in
 chat completions   #28246 (#28256)

---
 vllm/entrypoints/openai/serving_chat.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/vllm/entrypoints/openai/serving_chat.py b/vllm/entrypoints/openai/serving_chat.py
index a2d5fb576390..888aa4eb6fa8 100644
--- a/vllm/entrypoints/openai/serving_chat.py
+++ b/vllm/entrypoints/openai/serving_chat.py
@@ -1372,6 +1372,9 @@ class OpenAIServingChat(OpenAIServing):
                         else "stop"
                     ),
                     stop_reason=output.stop_reason,
+                    token_ids=(
+                        as_list(output.token_ids) if request.return_token_ids else None
+                    ),
                 )
                 choices.append(choice_data)
                 continue