diff --git a/genai-perf/genai_perf/profile_data_parser/llm_profile_data_parser.py b/genai-perf/genai_perf/profile_data_parser/llm_profile_data_parser.py
index f0cf0bfc..8b69b478 100755
--- a/genai-perf/genai_perf/profile_data_parser/llm_profile_data_parser.py
+++ b/genai-perf/genai_perf/profile_data_parser/llm_profile_data_parser.py
@@ -524,9 +524,15 @@ def _extract_openai_chat_text_output(self, response: str) -> str:
             # https://platform.openai.com/docs/api-reference/completions
             return completions.get("text", "")
         elif obj_type == "chat.completion":  # non-streaming
-            return completions["message"].get("content", "")
+            if completions["message"].get("reasoning_content", None) is not None: # vLLM model enable reasoning parser
+                return completions["message"].get("reasoning_content", "")
+            else:
+                return completions["message"].get("content", "")
         elif obj_type == "chat.completion.chunk":  # streaming
-            return completions["delta"].get("content", "")
+            if completions["delta"].get("reasoning_content", None) is not None: # vLLM model enable reasoning parser
+                return completions["delta"].get("reasoning_content", "")
+            else:
+                return completions["delta"].get("content", "")
         else:
             raise ValueError(f"Unknown OpenAI response object type '{obj_type}'.")