diff --git a/python/sglang/test/send_one.py b/python/sglang/test/send_one.py
index 1a9ec1dacfce..3c0e1f215adb 100644
--- a/python/sglang/test/send_one.py
+++ b/python/sglang/test/send_one.py
@@ -22,6 +22,7 @@ class BenchArgs:
     host: str = "localhost"
     port: int = 30000
     batch_size: int = 1
+    different_prompts: bool = False
     temperature: float = 0.0
     max_new_tokens: int = 512
     frequency_penalty: float = 0.0
@@ -44,6 +45,11 @@ def add_cli_args(parser: argparse.ArgumentParser):
         parser.add_argument("--host", type=str, default=BenchArgs.host)
         parser.add_argument("--port", type=int, default=BenchArgs.port)
         parser.add_argument("--batch-size", type=int, default=BenchArgs.batch_size)
+        parser.add_argument(
+            "--different-prompts",
+            action="store_true",
+            default=BenchArgs.different_prompts,
+        )
         parser.add_argument("--temperature", type=float, default=BenchArgs.temperature)
         parser.add_argument(
             "--profile-name-prefix", type=str, default=BenchArgs.profile_name_prefix
@@ -75,7 +81,7 @@ def from_cli_args(cls, args: argparse.Namespace):
         return cls(**{attr: getattr(args, attr) for attr in attrs})
 
 
-def send_one_prompt(args):
+def send_one_prompt(args: BenchArgs):
     base_url = f"http://{args.host}:{args.port}"
 
     if args.image:
@@ -110,7 +116,10 @@ def send_one_prompt(args):
         json_schema = None
 
     if args.batch_size > 1:
-        prompt = [prompt] * args.batch_size
+        if not args.different_prompts:
+            prompt = [prompt] * args.batch_size
+        else:
+            prompt = [f"Test case {i+1}: " + prompt for i in range(args.batch_size)]
 
     json_data = {
         "text": prompt,
@@ -193,6 +202,6 @@ def send_one_prompt(args):
 if __name__ == "__main__":
     parser = argparse.ArgumentParser()
     BenchArgs.add_cli_args(parser)
-    args = parser.parse_args()
+    args = BenchArgs.from_cli_args(parser.parse_args())
 
     send_one_prompt(args)