diff --git a/.gitignore b/.gitignore
index 22215e6..5e1d621 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,10 @@ node_modules/
 *.log
 # Local research downloads and generation checkpoints
 /tmp/
+
+# Agent bench: regenerated from scripts, never edited by hand
+bench/runs/
+bench/report.json
+bench/hex-bench/
+bench/hex-bench.zip
+bench/pack/