diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 740259775ee..d8ada7441f2 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -16400,9 +16400,8 @@ async def model_info_v1(
     # when v1 resolved models only via public model_name strings.
     all_models: list[dict] = copy.deepcopy(llm_router.model_list)
     alias_models: Final = copy.deepcopy(llm_router.get_model_list_from_model_alias())
-    all_models.extend(alias_models)
-    routing_group_models: Final = copy.deepcopy(llm_router.get_model_list_from_routing_groups())
-    all_models.extend(routing_group_models)
+    routing_group_models: Final = copy.deepcopy(list(llm_router.get_model_list_from_routing_groups()))
+    all_models.extend([*alias_models, *routing_group_models])
 
     all_models = expand_wildcard_deployments_for_model_info(all_models)