diff --git a/scripts/eval_loop.py b/scripts/eval_loop.py
index d0ac0b7..698ae9d 100644
--- a/scripts/eval_loop.py
+++ b/scripts/eval_loop.py
@@ -13,7 +13,8 @@ from pathlib import Path
 
 import torch
 
-from loop_common import (DIRECT_SUFFIX, BandLooper, MergeAdapter, chat_prompt,
+from loop_common import (DIRECT_SUFFIX, AdaptiveMergeAdapter, BandLooper,
+                         MergeAdapter, chat_prompt,
                          last_number, num_eq)
 import sys
 sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
@@ -96,6 +97,7 @@ def main():
     ap.add_argument("--prompt-only", action="store_true",
                     help="loop the prompt span only (unified regime, fast path)")
     ap.add_argument("--no-spider", action="store_true")
+    ap.add_argument("--adaptive", action="store_true")
     ap.add_argument("--feedforward", action="store_true",
                     help="no-recurrence control arm: adapter(e,e) once")
     args = ap.parse_args()
@@ -104,7 +106,8 @@ def main():
     model, tok = load_model(dtype=torch.bfloat16)
     tok.padding_side = "left"
     looper = BandLooper(model)
-    adapter = MergeAdapter(
+    cls = AdaptiveMergeAdapter if args.adaptive else MergeAdapter
+    adapter = cls(
         d=model.config.get_text_config().hidden_size).cuda()
     if args.adapter:
         adapter.load_state_dict(torch.load(args.adapter, map_location="cuda"))