diff --git a/python/sglang/srt/models/llava.py b/python/sglang/srt/models/llava.py
index c76312c0a833..57af26cff8aa 100644
--- a/python/sglang/srt/models/llava.py
+++ b/python/sglang/srt/models/llava.py
@@ -654,17 +654,16 @@ def _get_sgl_model_cls(self, config, auto_model_type: Type[AutoModel] = AutoMode
     @lru_cache
     def _config_cls_name_to_arch_name_mapping(
         self, auto_model_type: Type[AutoModel]
-    ) -> Dict[str, str]:
+    ) -> Dict[str, Union[str, Tuple[str, ...]]]:
         mapping = {}
-        for config_cls in auto_model_type._model_mapping.keys():
-            archs = auto_model_type._model_mapping.get(config_cls, None)
+        lazy_mapping = auto_model_type._model_mapping
+        raw_config_mapping = lazy_mapping._config_mapping
+        raw_model_mapping = lazy_mapping._model_mapping
+
+        for model_type, config_cls_name in raw_config_mapping.items():
+            archs = raw_model_mapping.get(model_type, None)
             if archs is not None:
-                if isinstance(archs, tuple):
-                    mapping[config_cls.__name__] = tuple(
-                        arch.__name__ for arch in archs
-                    )
-                else:
-                    mapping[config_cls.__name__] = archs.__name__
+                mapping[config_cls_name] = archs
         return mapping
 
     def __init__(