diff --git a/vlmeval/vlm/llama_vision.py b/vlmeval/vlm/llama_vision.py
index 9abbcfd9..649f963f 100644
--- a/vlmeval/vlm/llama_vision.py
+++ b/vlmeval/vlm/llama_vision.py
@@ -79,7 +79,7 @@ def __init__(self, model_path='meta-llama/Llama-3.2-11B-Vision-Instruct', **kwar
 
         self.device = 'cuda'
         self.processor = AutoProcessor.from_pretrained(model_path)
-        if 'Instruct' in model_path:
+        if 'Instruct' in model_path or 'cot' in model_path or 'CoT' in model_path:
             kwargs_default = dict(do_sample=True, temperature=0.6, top_p=0.9)
         else:
             kwargs_default = dict(do_sample=False, max_new_tokens=512, temperature=0.0, top_p=None, num_beams=1)
@@ -200,5 +200,7 @@ def generate_inner(self, message, dataset=None):
                 self.kwargs['max_new_tokens'] = 128
             else:
                 self.kwargs['max_new_tokens'] = 512
+        if "cot" in self.model_name or "CoT" in self.model_name:
+            self.kwargs['max_new_tokens'] = 2048
         output = self.model.generate(**inputs, **self.kwargs)
         return self.processor.decode(output[0][inputs['input_ids'].shape[1]:]).replace('<|eot_id|>', '')