[v1] add cli sampler (#9721)

src/llamafactory/v1/config/arg_utils.py

@@ -17,7 +17,7 @@
 
 
 import json
-from enum import Enum, unique
+from enum import StrEnum, unique
 
 
 class PluginConfig(dict):
@@ -36,7 +36,7 @@ PluginArgument = PluginConfig | dict | str | None
 
 
 @unique
-class ModelClass(str, Enum):
+class ModelClass(StrEnum):
     """Auto class for model config."""
 
     LLM = "llm"
@@ -45,7 +45,7 @@ class ModelClass(str, Enum):
 
 
 @unique
-class SampleBackend(str, Enum):
+class SampleBackend(StrEnum):
     HF = "hf"
     VLLM = "vllm"
 

src/llamafactory/v1/config/model_args.py

@@ -21,8 +21,13 @@ from .arg_utils import ModelClass, PluginConfig, get_plugin_config
 @dataclass
 class ModelArguments:
     model: str = field(
+        default="Qwen/Qwen3-4B-Instruct-2507",
         metadata={"help": "Path to the model or model identifier from Hugging Face."},
     )
+    template: str = field(
+        default="chatml",
+        metadata={"help": "Template for the model."},
+    )
     trust_remote_code: bool = field(
         default=False,
         metadata={"help": "Trust remote code from Hugging Face."},