diff --git a/vllm/entrypoints/openai/protocol.py b/vllm/entrypoints/openai/protocol.py
index dfb7c977dbd43..6ed7c2e9dcd6b 100644
--- a/vllm/entrypoints/openai/protocol.py
+++ b/vllm/entrypoints/openai/protocol.py
@@ -211,7 +211,7 @@ class ChatCompletionRequest(OpenAIBaseModel):
     stop: Optional[Union[str, List[str]]] = Field(default_factory=list)
     stream: Optional[bool] = False
     stream_options: Optional[StreamOptions] = None
-    temperature: Optional[float] = 0.7
+    temperature: Optional[float] = 1.0
     top_p: Optional[float] = 1.0
     tools: Optional[List[ChatCompletionToolsParam]] = None
     tool_choice: Optional[Union[Literal["none"], Literal["auto"],