diff --git a/config.json b/config.json
index d7f9a15..6b9ac53 100644
--- a/config.json
+++ b/config.json
@@ -1,6 +1,6 @@
 {
   "model": null,
   "output_type": "str",
-  "lm": "openai/gpt-4o",
+  "lm": "openai/gpt-4o-mini",
   "number": 1
 }
\ No newline at end of file
diff --git a/program.json b/program.json
index 5c0c596..98e1908 100644
--- a/program.json
+++ b/program.json
@@ -21,7 +21,7 @@
       ]
     },
     "lm": {
-      "model": "openai/gpt-4o",
+      "model": "openai/gpt-4o-mini",
       "model_type": "chat",
       "cache": true,
       "num_retries": 3,