diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 8774a4863..550ba38c8 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -939,7 +939,7 @@ class Coder:
 
 def check_model_availability(io, main_model):
     available_models = openai.Model.list()
-    model_ids = [model.id for model in available_models["data"]]
+    model_ids = sorted(model.id for model in available_models["data"])
     if main_model.name in model_ids:
         return True