diff --git a/scripts/run_ablation_pair.sh b/scripts/run_ablation_pair.sh
new file mode 100755
index 0000000..da8cbfc
--- /dev/null
+++ b/scripts/run_ablation_pair.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# Run the harness-ON then naive-OFF tuning loops sequentially (use_harness ablation),
+# then drop a DONE marker. Run from the repo root on the GPU host.
+set -u
+export OPENAI_API_KEY=$(python3 -c 'import json,pathlib;print(json.load(open(pathlib.Path.home()/".codex/auth.json"))["OPENAI_API_KEY"])')
+mkdir -p .aituner
+rm -rf .aituner/abl-harness .aituner/abl-naive .aituner/ABLATION_DONE
+
+echo "=== harness ON  start $(date -Is) ==="
+PYTHONPATH=src python3 -m aituner.cli study tune \
+  --spec configs/examples/dash0_qwen27b_ablation_harness_on.json \
+  --store-root .aituner/abl-harness --max-trials 6 > .aituner/abl-harness.log 2>&1
+echo "=== harness ON  done  $(date -Is) ==="
+
+echo "=== naive OFF   start $(date -Is) ==="
+PYTHONPATH=src python3 -m aituner.cli study tune \
+  --spec configs/examples/dash0_qwen27b_ablation_naive_off.json \
+  --store-root .aituner/abl-naive --max-trials 6 > .aituner/abl-naive.log 2>&1
+echo "=== naive OFF   done  $(date -Is) ==="
+
+touch .aituner/ABLATION_DONE