diff --git a/api/settings.py b/api/settings.py
index 4691518..d60e663 100644
--- a/api/settings.py
+++ b/api/settings.py
@@ -205,7 +205,7 @@ MEDIA_ROOT = BASE_DIR / "media"
 # LLM Configuration
 LLM_API_KEY = os.environ.get("LLM_API_KEY", "")
 LLM_BASE_URL = os.environ.get("LLM_BASE_URL", "https://api.deepseek.com")
-LLM_MODEL = os.environ.get("LLM_MODEL", "deepseek-chat")
+LLM_MODEL = os.environ.get("LLM_MODEL", "deepseek-v4-flash")
 
 # ARK (Volcengine) LLM Configuration
 ARK_API_KEY = os.environ.get("ARK_API_KEY", "")