diff --git a/applications/ColossalChat/coati/distributed/grpo_consumer.py b/applications/ColossalChat/coati/distributed/grpo_consumer.py
index 369023977..152689e06 100644
--- a/applications/ColossalChat/coati/distributed/grpo_consumer.py
+++ b/applications/ColossalChat/coati/distributed/grpo_consumer.py
@@ -120,16 +120,7 @@ class GRPOConsumer(BaseConsumer):
                     "either max_tokens (vllm) or max_new_tokens (transformers) must be set in generate_config."
                 )
         # Initialize verifiable reward.
-        response_format_tags = (
-            {
-                "think_start": {"text": "<think>", "num_occur": 1},
-                "think_end": {"text": "</think>", "num_occur": 1},
-                "answer_start": {"text": "<answer>", "num_occur": 1},
-                "answer_end": {"text": "</answer>", "num_occur": 1},
-            }
-            if grpo_config.get("reward_fn_type") == "think_answer_tags"
-            else None
-        )
+        response_format_tags = grpo_config.get("response_format_tags", None)
         reward_model_kwargs = {
             k: v
             for k, v in grpo_config.items()
diff --git a/applications/ColossalChat/coati/distributed/launch.py b/applications/ColossalChat/coati/distributed/launch.py
index c9e8d2ab2..764325cdd 100644
--- a/applications/ColossalChat/coati/distributed/launch.py
+++ b/applications/ColossalChat/coati/distributed/launch.py
@@ -100,6 +100,7 @@ def launch_distributed(
             eval_dataset_config=eval_dataset_config,
             eval_interval=eval_interval,
             evaluation_function_type=grpo_config["reward_fn_type"],
+            response_format_tags=grpo_config["response_format_tags"],
             eval_save_dir=eval_save_dir,
             eval_generation_config=eval_generation_config,
             project_name=project_name,
diff --git a/applications/ColossalChat/coati/distributed/producer.py b/applications/ColossalChat/coati/distributed/producer.py
index 75879278c..916ae3326 100644
--- a/applications/ColossalChat/coati/distributed/producer.py
+++ b/applications/ColossalChat/coati/distributed/producer.py
@@ -46,6 +46,7 @@ class BaseProducer:
         eval_dataset_config=None,
         eval_interval=-1,  # disable evaluation
         evaluation_function_type="think_answer_tags",
+        response_format_tags=None,
         eval_save_dir: str = "./eval",
         project_name: str = None,
         run_name: str = None,
@@ -148,6 +149,7 @@ class BaseProducer:
                 self.evaluation_function = boxed_math_reward_fn
             else:
                 raise ValueError(f"Unknown evaluation function type {evaluation_function_type}")
+            self.response_format_tags = response_format_tags
         else:
             raise ValueError("eval_dataset_config is not defined")
         self.device = get_current_device()
@@ -217,6 +219,7 @@ class BaseProducer:
                                         eval_outputs["response_idx"][m][n],
                                         tokenizer=self.tokenizer,
                                         eval_mode=True,
+                                        tags=self.response_format_tags,
                                     )
                                     for m in range(eval_outputs["input_ids"].size(0))
                                     for n in range(eval_outputs["input_ids"].size(1))
@@ -324,6 +327,7 @@ class SimpleProducer(BaseProducer):
         eval_dataset_config=None,
         eval_interval=-1,  # disable evaluation
         evaluation_function_type="think_answer_tags",
+        response_format_tags=None,
         eval_save_dir: str = "./eval",
         eval_generation_config={},
         project_name: str = None,
@@ -349,6 +353,7 @@ class SimpleProducer(BaseProducer):
             eval_dataset_config=eval_dataset_config,
             eval_interval=eval_interval,
             evaluation_function_type=evaluation_function_type,
+            response_format_tags=response_format_tags,
             eval_save_dir=eval_save_dir,
             project_name=project_name,
             run_name=run_name,
diff --git a/applications/ColossalChat/rl_example.py b/applications/ColossalChat/rl_example.py
index 53f166d66..e1025442c 100644
--- a/applications/ColossalChat/rl_example.py
+++ b/applications/ColossalChat/rl_example.py
@@ -231,6 +231,16 @@ if __name__ == "__main__":
             "reward_fn_type": args.reward_type,
             "max_length": args.max_new_tokens + args.max_prompt_tokens,
             "max_new_tokens": args.max_new_tokens,
+            "response_format_tags": (
+                {
+                    "think_start": {"text": "<think>", "num_occur": 1},
+                    "think_end": {"text": "</think>", "num_occur": 1},
+                    "answer_start": {"text": "<answer>", "num_occur": 1},
+                    "answer_end": {"text": "</answer>", "num_occur": 1},
+                }
+                if args.reward_type == "think_answer_tags"
+                else None
+            ),
         }
     elif args.algo == "DAPO":
         # DAPO variant settings
@@ -250,6 +260,16 @@ if __name__ == "__main__":
             "cache_length": min(1024, int(args.max_new_tokens / 4)),
             "filter_truncated_response": True,
             "reward_fn_type": args.reward_type,
+            "response_format_tags": (
+                {
+                    "think_start": {"text": "<think>", "num_occur": 1},
+                    "think_end": {"text": "</think>", "num_occur": 1},
+                    "answer_start": {"text": "<answer>", "num_occur": 1},
+                    "answer_end": {"text": "</answer>", "num_occur": 1},
+                }
+                if args.reward_type == "think_answer_tags"
+                else None
+            ),
         }
     else:
         raise ValueError(f"Unsupported algorithm: {args.algo}")