diff --git a/common/model-ratio.go b/common/model-ratio.go
index b45ed293..3713c2c4 100644
--- a/common/model-ratio.go
+++ b/common/model-ratio.go
@@ -375,6 +375,9 @@ func GetCompletionRatio(name string) float64 {
 		return 3
 	}
 	if strings.HasPrefix(name, "gemini-") {
+		if strings.Contains(name, "flash") {
+			return 4
+		}
 		return 3
 	}
 	if strings.HasPrefix(name, "command") {
diff --git a/controller/model.go b/controller/model.go
index 36beb2d1..3d207023 100644
--- a/controller/model.go
+++ b/controller/model.go
@@ -137,15 +137,6 @@ func init() {
 }
 
 func ListModels(c *gin.Context) {
-	userId := c.GetInt("id")
-	user, err := model.GetUserById(userId, true)
-	if err != nil {
-		c.JSON(http.StatusOK, gin.H{
-			"success": false,
-			"message": err.Error(),
-		})
-		return
-	}
 	userOpenAiModels := make([]dto.OpenAIModels, 0)
 	permission := getPermission()
 
@@ -174,7 +165,21 @@ func ListModels(c *gin.Context) {
 			}
 		}
 	} else {
-		models := model.GetGroupModels(user.Group)
+		userId := c.GetInt("id")
+		userGroup, err := model.GetUserGroup(userId)
+		if err != nil {
+			c.JSON(http.StatusOK, gin.H{
+				"success": false,
+				"message": "get user group failed",
+			})
+			return
+		}
+		group := userGroup
+		tokenGroup := c.GetString("token_group")
+		if tokenGroup != "" {
+			group = tokenGroup
+		}
+		models := model.GetGroupModels(group)
 		for _, s := range models {
 			if _, ok := openAIModelsMap[s]; ok {
 				userOpenAiModels = append(userOpenAiModels, openAIModelsMap[s])
diff --git a/middleware/distributor.go b/middleware/distributor.go
index 0393d24f..7a959649 100644
--- a/middleware/distributor.go
+++ b/middleware/distributor.go
@@ -41,9 +41,14 @@ func Distribute() func(c *gin.Context) {
 		userGroup, _ := model.CacheGetUserGroup(userId)
 		tokenGroup := c.GetString("token_group")
 		if tokenGroup != "" {
+			// check common.UserUsableGroups[userGroup]
+			if _, ok := common.UserUsableGroups[tokenGroup]; !ok {
+				abortWithOpenAiMessage(c, http.StatusForbidden, fmt.Sprintf("令牌分组 %s 已被禁用", tokenGroup))
+				return
+			}
 			// check group in common.GroupRatio
 			if _, ok := common.GroupRatio[tokenGroup]; !ok {
-				abortWithOpenAiMessage(c, http.StatusForbidden, fmt.Sprintf("分组 %s 已被禁用", tokenGroup))
+				abortWithOpenAiMessage(c, http.StatusForbidden, fmt.Sprintf("分组 %s 已被弃用", tokenGroup))
 				return
 			}
 			userGroup = tokenGroup