diff --git a/src/llm_models/model_client/openai_client.py b/src/llm_models/model_client/openai_client.py
index c5146c5e..34134a15 100644
--- a/src/llm_models/model_client/openai_client.py
+++ b/src/llm_models/model_client/openai_client.py
@@ -277,12 +277,10 @@ async def _default_stream_response_handler(
         # 空 choices / usage-only 帧的防御
         if not hasattr(event, "choices") or not event.choices:
             if hasattr(event, "usage") and event.usage:
-                # 安全地获取usage属性，处理不同API版本的差异
-                usage_obj = event.usage
                 _usage_record = (
-                    getattr(usage_obj, 'prompt_tokens', 0) or 0,
-                    getattr(usage_obj, 'completion_tokens', 0) or 0,
-                    getattr(usage_obj, 'total_tokens', 0) or 0,
+                    event.usage.prompt_tokens or 0,
+                    event.usage.completion_tokens or 0,
+                    event.usage.total_tokens or 0,
                 )
             continue  # 跳过本帧，避免访问 choices[0]
         delta = event.choices[0].delta  # 获取当前块的delta内容
@@ -302,12 +300,10 @@ async def _default_stream_response_handler(
 
         if event.usage:
             # 如果有使用情况，则将其存储在APIResponse对象中
-            # 安全地获取usage属性，处理不同API版本的差异
-            usage_obj = event.usage
             _usage_record = (
-                getattr(usage_obj, 'prompt_tokens', 0) or 0,
-                getattr(usage_obj, 'completion_tokens', 0) or 0,
-                getattr(usage_obj, 'total_tokens', 0) or 0,
+                event.usage.prompt_tokens or 0,
+                event.usage.completion_tokens or 0,
+                event.usage.total_tokens or 0,
             )
 
     try:
@@ -374,12 +370,10 @@ def _default_normal_response_parser(
 
     # 提取Usage信息
     if resp.usage:
-        # 安全地获取usage属性，处理不同API版本的差异
-        usage_obj = resp.usage
         _usage_record = (
-            getattr(usage_obj, 'prompt_tokens', 0) or 0,
-            getattr(usage_obj, 'completion_tokens', 0) or 0,
-            getattr(usage_obj, 'total_tokens', 0) or 0,
+            resp.usage.prompt_tokens or 0,
+            resp.usage.completion_tokens or 0,
+            resp.usage.total_tokens or 0,
         )
     else:
         _usage_record = None
@@ -557,18 +551,12 @@ class OpenaiClient(BaseClient):
 
         # 解析使用情况
         if hasattr(raw_response, "usage"):
-            usage_obj = raw_response.usage
-            # 安全地获取usage属性，处理不同API版本的差异
-            prompt_tokens = getattr(usage_obj, 'prompt_tokens', 0) or 0
-            completion_tokens = getattr(usage_obj, 'completion_tokens', 0) or 0
-            total_tokens = getattr(usage_obj, 'total_tokens', 0) or 0
-            
             response.usage = UsageRecord(
                 model_name=model_info.name,
                 provider_name=model_info.api_provider,
-                prompt_tokens=prompt_tokens,
-                completion_tokens=completion_tokens,
-                total_tokens=total_tokens,
+                prompt_tokens=raw_response.usage.prompt_tokens or 0,
+                completion_tokens=getattr(raw_response.usage, "completion_tokens", 0),
+                total_tokens=raw_response.usage.total_tokens or 0,
             )
 
         return response