diff --git a/aider/models.py b/aider/models.py
index d25658eaa..baa35fd94 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -108,17 +108,6 @@ MODEL_SETTINGS = [
     ),
 ]
 
-ALIASES = {
-    # gpt-3.5
-    "gpt-3.5-turbo": "gpt-3.5-turbo-0613",
-    "gpt-3.5-turbo-16k": "gpt-3.5-turbo-16k-0613",
-    # gpt-4
-    "gpt-4-turbo": "gpt-4-turbo-2024-04-09",
-    "gpt-4-turbo-preview": "gpt-4-0125-preview",
-    "gpt-4": "gpt-4-0613",
-    "gpt-4-32k": "gpt-4-32k-0613",
-}
-
 
 class Model:
     name = None