diff --git a/relay/channel/vertex/adaptor.go b/relay/channel/vertex/adaptor.go
index 424234a8..e568f651 100644
--- a/relay/channel/vertex/adaptor.go
+++ b/relay/channel/vertex/adaptor.go
@@ -83,10 +83,13 @@ func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
 	suffix := ""
 	if a.RequestMode == RequestModeGemini {
 		if model_setting.GetGeminiSettings().ThinkingAdapterEnabled {
-			// suffix -thinking and -nothinking
-			if strings.HasSuffix(info.OriginModelName, "-thinking") {
+			// 新增逻辑：处理 -thinking-<budget> 格式
+			if strings.Contains(info.UpstreamModelName, "-thinking-") {
+				parts := strings.Split(info.UpstreamModelName, "-thinking-")
+				info.UpstreamModelName = parts[0]
+			} else if strings.HasSuffix(info.UpstreamModelName, "-thinking") { // 旧的适配
 				info.UpstreamModelName = strings.TrimSuffix(info.UpstreamModelName, "-thinking")
-			} else if strings.HasSuffix(info.OriginModelName, "-nothinking") {
+			} else if strings.HasSuffix(info.UpstreamModelName, "-nothinking") {
 				info.UpstreamModelName = strings.TrimSuffix(info.UpstreamModelName, "-nothinking")
 			}
 		}