diff --git a/aider/models.py b/aider/models.py
index a2800c7d1..602d1d05d 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -778,7 +778,7 @@ class Model(ModelSettings):
             self.examples_as_sys_msg = True
             self.reminder = "user"
 
-        if "o1-" in model:
+        if model.startswith("o1-") or "/o1-" in model:
             self.use_system_prompt = False
             self.use_temperature = False
             self.streaming = False