diff --git a/bossai.py b/bossai.py
index 7add04d..2782b83 100644
--- a/bossai.py
+++ b/bossai.py
@@ -2876,12 +2876,15 @@ class KimiClient:
     def chat(self, messages: list[dict], temperature: float = 0.2, timeout: int = 60) -> str:
         """调用云端模型,超时 60s。
 
-        kimi-k 系列模型只允许 temperature=1,自动适配。
+        部分模型(kimi-k 系列)只允许 temperature=1,自动适配。
         """
         # kimi-k 系列模型只允许 temperature=1
         if self.model.startswith("kimi-k"):
             temperature = 1.0
-        body = json.dumps({"model": self.model, "messages": messages, "temperature": temperature}).encode()
+        body_dict = {"model": self.model, "messages": messages}
+        if temperature is not None:
+            body_dict["temperature"] = temperature
+        body = json.dumps(body_dict).encode()
         req = Request(self.base_url + "/chat/completions", data=body, headers={"Authorization": "Bearer " + self.api_key, "Content-Type": "application/json"})
         with urlopen(req, timeout=timeout) as response:
             payload = json.loads(response.read().decode())