diff --git a/.gitignore b/.gitignore
index ebfe9e6..414ff00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,13 @@
 .vscode/
 __pycache__/
+
+# Model weights and optimizer state: multi-GB, reproducible from the training
+# scripts, and they permanently bloat history once committed.
+*.safetensors
+*.pt
+*.pth
+*.bin
+*.arrow
+*.parquet
+checkpoint-*/
+llm/data/