diff --git a/utils/api_client.py b/utils/api_client.py
index 35941aa..f9a15c4 100644
--- a/utils/api_client.py
+++ b/utils/api_client.py
@@ -533,7 +533,9 @@ class DeepSeekClient:
                     should_include_usage = True
             if should_include_usage:
                 if is_minimax:
+                    # MiniMax 流式需要 stream_options.include_usage 才会返回有效 usage
                     payload["include_usage"] = True
+                    payload.setdefault("stream_options", {})["include_usage"] = True
                 else:
                     payload.setdefault("stream_options", {})["include_usage"] = True
         # 注入模型额外参数（如 Qwen enable_thinking）