diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index b380f08c4..18eec044d 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -1381,6 +1381,11 @@ class Coder:
 
         self.io.log_llm_history("TO LLM", format_messages(messages))
 
+        if self.main_model.use_temperature:
+            temp = self.temperature
+        else:
+            temp = None
+
         completion = None
         try:
             hash_object, completion = send_completion(
@@ -1388,7 +1393,7 @@ class Coder:
                 messages,
                 functions,
                 self.stream,
-                self.temperature,
+                temp,
                 extra_headers=model.extra_headers,
                 max_tokens=model.max_tokens,
             )
diff --git a/aider/models.py b/aider/models.py
index 08faf966b..6a23dac59 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -78,6 +78,7 @@ class ModelSettings:
     cache_control: bool = False
     caches_by_default: bool = False
     use_system_prompt: bool = True
+    use_temperature: bool = True
 
 
 # https://platform.openai.com/docs/models/gpt-4-and-gpt-4-turbo
@@ -433,6 +434,7 @@ MODEL_SETTINGS = [
         use_repo_map=True,
         reminder="user",
         use_system_prompt=False,
+        use_temperature=False,
     ),
     ModelSettings(
         "o1-mini",
@@ -441,6 +443,7 @@ MODEL_SETTINGS = [
         use_repo_map=True,
         reminder="user",
         use_system_prompt=False,
+        use_temperature=False,
     ),
 ]
 
diff --git a/aider/sendchat.py b/aider/sendchat.py
index af3d126e0..55c64b2fe 100644
--- a/aider/sendchat.py
+++ b/aider/sendchat.py
@@ -60,9 +60,10 @@ def send_completion(
     kwargs = dict(
         model=model_name,
         messages=messages,
-        # temperature=temperature,
         stream=stream,
     )
+    if temperature is not None:
+        kwargs["temperature"] = temperature
 
     if functions is not None:
         function = functions[0]