diff --git a/packages/config/base.py b/packages/config/base.py
index 2bb8cd599..050d2b0e5 100755
--- a/packages/config/base.py
+++ b/packages/config/base.py
@@ -92,7 +92,7 @@ class SharedSettings(BaseSettings):
     doubao_api_key: str = ""
     doubao_model: str = "doubao-seed-2-1-pro-260915"  # 推理模型（Seed 2.1 Pro，深度思考+多模态；原 seed-1-6 已下线）
     doubao_fast_model: str = (
-        "doubao-seed-2-1-lite-260915"  # 快速模型（Seed 2.1 Lite，高 RPM，编导/审核/VLM lite；原 1-5-pro-32k 已 Retiring）
+        "doubao-seed-2-1-pro-260915"  # #2181: lite方舟侧100%超时，默认fast_model也走pro；方舟恢复lite后通过ENV DOUBAO_FAST_MODEL切回
     )
     doubao_base_url: str = "https://ark.cn-beijing.volces.com/api/v3"
     doubao_timeout: int = 45  # #2180: 方舟LLM高峰期响应6-8s，原30s太紧提到45s