diff --git a/backend/.env b/backend/.env
index 48b24a0..d3705dc 100644
--- a/backend/.env
+++ b/backend/.env
@@ -1,6 +1,6 @@
 # ---- AI 服务 API Key ----
 CAMTALK_AI_LLM_API_KEY=sk-ws-H.REHELLY.C4s3.MEUCIQCRee37XWEKp2szaxVLFDtR1rxNNsf372zMvCR0Xl6UvQIgZgvhRTvaa1FmhbCQJgaHu4Jny29AQkn01-3hX9CWBOg
-CAMTALK_AI_STT_API_KEY=tp-c9e7scwfx94qvqyhpnahnw8uaiya01za2qzvg4xe24rp3xiv
+CAMTALK_AI_STT_API_KEY=sk-c3jhv58rr5djhxw398w2rrij5tfpnpdgxqq1bojagshzviah
 CAMTALK_AI_TTS_API_KEY=tp-c9e7scwfx94qvqyhpnahnw8uaiya01za2qzvg4xe24rp3xiv
 
 # ---- 可选覆盖（默认值见 config.yaml）----
diff --git a/backend/config.yaml b/backend/config.yaml
index 2e9ae04..f6040cf 100644
--- a/backend/config.yaml
+++ b/backend/config.yaml
@@ -17,7 +17,7 @@ ai:
   stt:
     provider: mimo
     model: mimo-v2.5-asr
-    endpoint: "https://token-plan-cn.xiaomimimo.com/v1"
+    endpoint: "https://api.xiaomimimo.com/v1/chat/completions"
   llm:
     provider: dashscope
     model: qwen3-vl-plus