diff --git a/sotopia/server.py b/sotopia/server.py
index bc9c9a035..d023b22be 100644
--- a/sotopia/server.py
+++ b/sotopia/server.py
@@ -29,7 +29,7 @@
     RuleBasedTerminatedEvaluator,
     unweighted_aggregate_evaluate,
 )
-from sotopia.generation_utils.generate import LLM_Name, agenerate_script
+from sotopia.generation_utils.generate import agenerate_script
 from sotopia.messages import AgentAction, Message, Observation
 from sotopia.messages.message_classes import (
     ScriptBackground,
@@ -46,7 +46,7 @@
 
 @beartype
 def run_sync_server(
-    model_name_dict: dict[str, LLM_Name],
+    model_name_dict: dict[str, str],
     action_order: Literal["simutaneous", "round-robin", "random"],
     agents_info: dict[str, dict[str, str]] | None = None,
     partial_background_file: str | None = None,
@@ -124,7 +124,7 @@ def run_sync_server(
 async def arun_one_episode(
     env: ParallelSotopiaEnv,
     agent_list: Sequence[BaseAgent[Observation, AgentAction]],
-    model_dict: dict[str, LLM_Name],
+    model_dict: dict[str, str],
     omniscient: bool = False,
     script_like: bool = False,
     json_in_script: bool = False,
@@ -257,7 +257,7 @@ async def arun_one_episode(
 @gin.configurable
 @beartype
 async def run_async_server(
-    model_dict: dict[str, LLM_Name],
+    model_dict: dict[str, str],
     sampler: BaseSampler[Observation, AgentAction] = BaseSampler(),
     action_order: Literal[
         "simutaneous", "round-robin", "random"
@@ -358,7 +358,7 @@ def get_agent_class(
 async def arun_one_script(
     env: ParallelSotopiaEnv,
     agent_list: Sequence[BaseAgent[Observation, AgentAction]],
-    model_dict: dict[str, LLM_Name],
+    model_dict: dict[str, str],
     omniscient: bool = False,
     tag: str | None = None,
     push_to_db: bool = False,