diff --git a/offline-backend-20260512/backend/config.yaml b/offline-backend-20260512/backend/config.yaml
index 49cfd30b..e68a5f12 100644
--- a/offline-backend-20260512/backend/config.yaml
+++ b/offline-backend-20260512/backend/config.yaml
@@ -33,6 +33,18 @@ concurrency:
     fail_open: true
 
 models:
+- name: deepseek-v4-flash
+  display_name: deepseek-v4-flash
+  use: langchain_openai:ChatOpenAI
+  model: deepseek-v4-flash
+  api_key: sk-o2iNlFgqK4wE3EZlDTJ9nbt3xJnaaAHgn49O4GFAC8GfLIsA
+  base_url: https://ai.hzfzlz.com/v1
+  request_timeout: 30.0
+  max_retries: 2
+  stream_usage: true
+  supports_thinking: false
+  supports_reasoning_effort: false
+  supports_vision: false
 - name: deepseek-chat
   display_name: DeepSeek Chat
   use: langchain_openai:ChatOpenAI