diff --git a/gateway/scripts/chat_bridge.py b/gateway/scripts/chat_bridge.py
index 49b3061..0a49051 100644
--- a/gateway/scripts/chat_bridge.py
+++ b/gateway/scripts/chat_bridge.py
@@ -50,6 +50,7 @@ _PROVIDERS = _load_providers()
 # falling back to a sensible default based on provider key.
 _DEFAULT_MODELS = {
     "volcengine": "deepseek-v4-flash",
+    "volcengine-direct": "doubao-seed-code",
     "opencode-go": "deepseek-v4-flash",
     "opencode-go-new": "deepseek-v4-flash",
     "deepseek": "deepseek-v4-flash",