diff --git a/config.json b/config.json
index 60fde47..1c79724 100644
--- a/config.json
+++ b/config.json
@@ -24,5 +24,16 @@
     ],
     "title": "StringSignature",
     "type": "object"
+  },
+  "lm": {
+    "model": "gpt-4o-mini",
+    "model_type": "chat",
+    "cache": true,
+    "num_retries": 3,
+    "finetuning_model": null,
+    "launch_kwargs": {},
+    "train_kwargs": {},
+    "temperature": null,
+    "max_tokens": null
   }
 }
\ No newline at end of file
diff --git a/program.json b/program.json
index e1d0164..52e1f03 100644
--- a/program.json
+++ b/program.json
@@ -16,7 +16,17 @@
         }
       ]
     },
-    "lm": null
+    "lm": {
+      "model": "gpt-4o-mini",
+      "model_type": "chat",
+      "cache": true,
+      "num_retries": 3,
+      "finetuning_model": null,
+      "launch_kwargs": {},
+      "train_kwargs": {},
+      "temperature": null,
+      "max_tokens": null
+    }
   },
   "metadata": {
     "dependency_versions": {