diff --git a/api/services/__init__.py b/api/services/__init__.py
index 6609a19..304ce60 100644
--- a/api/services/__init__.py
+++ b/api/services/__init__.py
@@ -3,9 +3,11 @@
 """
 from .asr_service import asr_service
 from .tts_service import tts_service
+from .llm_service import llm_service
 
 __all__ = [
     "asr_service",
     "tts_service",
+    "llm_service",
 ]
 
diff --git a/api/services/asr_service.py b/api/services/asr_service.py
index 9ea2ed3..df7a063 100644
--- a/api/services/asr_service.py
+++ b/api/services/asr_service.py
@@ -1,9 +1,9 @@
 """
 ASR 服务：语音转文字
 """
-import os
 import base64
-from typing import Optional, Any, Coroutine
+import os
+
 from openai import OpenAI