diff --git a/controller/channel_upstream_update.go b/controller/channel_upstream_update.go
index 71ab0e53fafe..a734be09f6ae 100644
--- a/controller/channel_upstream_update.go
+++ b/controller/channel_upstream_update.go
@@ -516,6 +516,7 @@ func checkAndPersistChannelUpstreamModelUpdates(
 		if err = channel.UpdateAbilities(nil); err != nil {
 			return true, autoAdded, err
 		}
+		_ = model.EnsureChannelVendorAndModels(channel, nil)
 	}
 	return modelsChanged, autoAdded, nil
 }
@@ -962,6 +963,7 @@ func applyChannelUpstreamModelUpdates(
 		if err := channel.UpdateAbilities(nil); err != nil {
 			return addModels, removeModels, remainingModels, remainingRemoveModels, true, err
 		}
+		_ = model.EnsureChannelVendorAndModels(channel, nil)
 	}
 	return addModels, removeModels, remainingModels, remainingRemoveModels, modelsChanged, nil
 }
diff --git a/model/channel.go b/model/channel.go
index 2cd7c3115ff6..019e6da6c789 100644
--- a/model/channel.go
+++ b/model/channel.go
@@ -447,6 +447,7 @@ func BatchInsertChannels(channels []Channel) error {
 				tx.Rollback()
 				return err
 			}
+			_ = EnsureChannelVendorAndModels(&channel_, tx)
 		}
 	}
 	return tx.Commit().Error
@@ -526,6 +527,9 @@ func (channel *Channel) Insert() error {
 		return err
 	}
 	err = channel.AddAbilities(nil)
+	if err == nil {
+		_ = EnsureChannelVendorAndModels(channel, nil)
+	}
 	return err
 }
 
@@ -575,6 +579,9 @@ func (channel *Channel) Update() error {
 	}
 	DB.Model(channel).First(channel, "id = ?", channel.Id)
 	err = channel.UpdateAbilities(nil)
+	if err == nil {
+		_ = EnsureChannelVendorAndModels(channel, nil)
+	}
 	return err
 }
 
diff --git a/model/vendor_channel_auto_test.go b/model/vendor_channel_auto_test.go
new file mode 100644
index 000000000000..c4ee2e887141
--- /dev/null
+++ b/model/vendor_channel_auto_test.go
@@ -0,0 +1,48 @@
+package model
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/constant"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestEnsureVendorAndAutoBindModelsForNewChannel(t *testing.T) {
+	require.NoError(t, DB.AutoMigrate(&Channel{}, &Ability{}, &Vendor{}, &Model{}))
+
+	uniqueChannelName := fmt.Sprintf("AutoVendorChan_%d", common.GetTimestamp())
+	testModel1 := fmt.Sprintf("auto-test-model-1-%d", common.GetTimestamp())
+	testModel2 := fmt.Sprintf("auto-test-model-2-%d", common.GetTimestamp())
+
+	channel := &Channel{
+		Type:   constant.ChannelTypeAdvancedCustom,
+		Name:   uniqueChannelName,
+		Key:    "sk-test-key",
+		Models: fmt.Sprintf("%s,%s", testModel1, testModel2),
+		Status: common.ChannelStatusEnabled,
+	}
+
+	err := channel.Insert()
+	require.NoError(t, err)
+
+	// 1. Verify Vendor was auto-created
+	var vendor Vendor
+	err = DB.Where("name = ? AND deleted_at IS NULL", uniqueChannelName).First(&vendor).Error
+	require.NoError(t, err)
+	assert.Equal(t, uniqueChannelName, vendor.Name)
+	assert.Equal(t, 1, vendor.Status)
+
+	// 2. Verify model metadata was auto-created and bound to vendor.Id
+	var meta1 Model
+	err = DB.Where("model_name = ? AND deleted_at IS NULL", testModel1).First(&meta1).Error
+	require.NoError(t, err)
+	assert.Equal(t, vendor.Id, meta1.VendorID)
+
+	var meta2 Model
+	err = DB.Where("model_name = ? AND deleted_at IS NULL", testModel2).First(&meta2).Error
+	require.NoError(t, err)
+	assert.Equal(t, vendor.Id, meta2.VendorID)
+}
diff --git a/model/vendor_meta.go b/model/vendor_meta.go
index 2bb357f82a1f..b749de3a10b1 100644
--- a/model/vendor_meta.go
+++ b/model/vendor_meta.go
@@ -1,7 +1,12 @@
 package model
 
 import (
+	"errors"
+	"fmt"
+	"strings"
+
 	"github.com/QuantumNous/new-api/common"
+	"github.com/QuantumNous/new-api/constant"
 
 	"gorm.io/gorm"
 )
@@ -86,3 +91,123 @@ func SearchVendors(keyword string, offset int, limit int) ([]*Vendor, int64, err
 	}
 	return vendors, total, nil
 }
+
+func resolveVendorNameAndIcon(channel *Channel) (string, string) {
+	if channel == nil {
+		return "Custom", "Globe"
+	}
+
+	name := strings.TrimSpace(channel.Name)
+	switch channel.Type {
+	case constant.ChannelTypeAdvancedCustom, constant.ChannelTypeNewAPI, constant.ChannelTypeSub2API, constant.ChannelTypeCustom:
+		if name != "" {
+			return name, "Globe"
+		}
+		return constant.GetChannelTypeName(channel.Type), "Globe"
+	default:
+		typeName := constant.GetChannelTypeName(channel.Type)
+		if typeName != "" && typeName != "Unknown" {
+			return typeName, "Globe"
+		}
+		if name != "" {
+			return name, "Globe"
+		}
+		return "Custom", "Globe"
+	}
+}
+
+// EnsureVendorForChannel 检查并自动创建渠道对应的供应商记录，返回 Vendor ID
+func EnsureVendorForChannel(channel *Channel, tx *gorm.DB) (int, error) {
+	if channel == nil {
+		return 0, nil
+	}
+
+	name, icon := resolveVendorNameAndIcon(channel)
+	if name == "" {
+		return 0, nil
+	}
+
+	useDB := DB
+	if tx != nil {
+		useDB = tx
+	}
+
+	var vendor Vendor
+	err := useDB.Where("name = ? AND deleted_at IS NULL", name).First(&vendor).Error
+	if err == nil {
+		return vendor.Id, nil
+	}
+
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		newVendor := Vendor{
+			Name:        name,
+			Description: fmt.Sprintf("%s 渠道自动创建供应商", name),
+			Icon:        icon,
+			Status:      1,
+			CreatedTime: common.GetTimestamp(),
+			UpdatedTime: common.GetTimestamp(),
+		}
+		if err := useDB.Create(&newVendor).Error; err != nil {
+			return 0, err
+		}
+		return newVendor.Id, nil
+	}
+
+	return 0, err
+}
+
+// AutoBindChannelModelsToVendor 为渠道拥有的模型自动补充元数据并绑定 Vendor ID
+func AutoBindChannelModelsToVendor(channel *Channel, vendorID int, tx *gorm.DB) error {
+	if channel == nil || channel.Models == "" || vendorID <= 0 {
+		return nil
+	}
+
+	useDB := DB
+	if tx != nil {
+		useDB = tx
+	}
+
+	models := strings.Split(channel.Models, ",")
+	now := common.GetTimestamp()
+
+	for _, modelName := range models {
+		modelName = strings.TrimSpace(modelName)
+		if modelName == "" {
+			continue
+		}
+
+		var existing Model
+		err := useDB.Where("model_name = ? AND deleted_at IS NULL", modelName).First(&existing).Error
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			newModel := Model{
+				ModelName:    modelName,
+				VendorID:     vendorID,
+				Status:       1,
+				SyncOfficial: 0,
+				Endpoints:    `["openai"]`,
+				CreatedTime:  now,
+				UpdatedTime:  now,
+			}
+			if err := useDB.Create(&newModel).Error; err != nil {
+				common.SysError(fmt.Sprintf("auto bind model failed: %s, err: %v", modelName, err))
+			}
+		} else if err == nil && existing.VendorID == 0 {
+			useDB.Model(&existing).Update("vendor_id", vendorID)
+		}
+	}
+	return nil
+}
+
+// EnsureChannelVendorAndModels 自动确保渠道对应的供应商和模型元数据已关联
+func EnsureChannelVendorAndModels(channel *Channel, tx *gorm.DB) error {
+	if channel == nil {
+		return nil
+	}
+	vendorID, err := EnsureVendorForChannel(channel, tx)
+	if err != nil {
+		common.SysError(fmt.Sprintf("EnsureVendorForChannel failed for channel %d (%s): %v", channel.Id, channel.Name, err))
+		return err
+	}
+	return AutoBindChannelModelsToVendor(channel, vendorID, tx)
+}
+
diff --git a/relay/channel/gemini/constant.go b/relay/channel/gemini/constant.go
index 08667b9b548f..7e868da2336f 100644
--- a/relay/channel/gemini/constant.go
+++ b/relay/channel/gemini/constant.go
@@ -4,7 +4,8 @@ var ModelList = []string{
 	// stable version
 	"gemini-2.5-flash", "gemini-2.5-pro", "gemini-2.0-flash",
 	"gemini-2.0-flash-001", "gemini-2.0-flash-lite-001", "gemini-2.0-flash-lite",
-	"gemini-2.5-flash-lite",
+	"gemini-2.5-flash-lite", "gemini-3.1-flash-lite", "gemini-3.5-flash-lite",
+	"gemini-3.6", "gemini-3.6-flash",
 	"gemini-3-pro-image", "gemini-3.1-flash-image",
 	// latest version
 	"gemini-flash-latest", "gemini-flash-lite-latest", "gemini-pro-latest",
diff --git a/setting/ratio_setting/cache_ratio.go b/setting/ratio_setting/cache_ratio.go
index 6e874b5bc5f9..e4bcb6d59196 100644
--- a/setting/ratio_setting/cache_ratio.go
+++ b/setting/ratio_setting/cache_ratio.go
@@ -8,6 +8,10 @@ var defaultCacheRatio = map[string]float64{
 	"gemini-3-flash-preview":              0.1,
 	"gemini-3-pro-preview":                0.1,
 	"gemini-3.1-pro-preview":              0.1,
+	"gemini-3.1-flash-lite":               0.1,
+	"gemini-3.5-flash-lite":               0.1,
+	"gemini-3.6":                          0.1,
+	"gemini-3.6-flash":                    0.1,
 	"gpt-4":                               0.5,
 	"o1":                                  0.5,
 	"o1-2024-12-17":                       0.5,
diff --git a/setting/ratio_setting/model_ratio.go b/setting/ratio_setting/model_ratio.go
index 829e0794a157..b2d4776ad801 100644
--- a/setting/ratio_setting/model_ratio.go
+++ b/setting/ratio_setting/model_ratio.go
@@ -190,6 +190,10 @@ var defaultModelRatio = map[string]float64{
 	"gemini-2.5-flash-lite-preview-thinking-*":  0.05,
 	"gemini-2.5-flash-lite-preview-06-17":       0.05,
 	"gemini-2.5-flash":                          0.15,
+	"gemini-3.1-flash-lite":                     0.125,
+	"gemini-3.5-flash-lite":                     0.15,
+	"gemini-3.6":                                 0.75,
+	"gemini-3.6-flash":                          0.75,
 	"gemini-robotics-er-1.5-preview":            0.15,
 	"gemini-embedding-001":                      0.075,
 	"text-embedding-004":                        0.001,
@@ -326,10 +330,14 @@ var modelRatioMap = types.NewRWMap[string, float64]()
 var completionRatioMap = types.NewRWMap[string, float64]()
 
 var defaultCompletionRatio = map[string]float64{
-	"gpt-4-gizmo-*":  2,
-	"gpt-4o-gizmo-*": 3,
-	"gpt-4-all":      2,
-	"gpt-image-1":    8,
+	"gpt-4-gizmo-*":         2,
+	"gpt-4o-gizmo-*":        3,
+	"gpt-4-all":             2,
+	"gpt-image-1":           8,
+	"gemini-3.1-flash-lite": 6,
+	"gemini-3.5-flash-lite": 2.5 / 0.3,
+	"gemini-3.6":            5,
+	"gemini-3.6-flash":      5,
 }
 
 // InitRatioSettings initializes all model related settings maps
@@ -577,6 +585,12 @@ func getHardcodedCompletionModelRatio(name string) (float64, bool) {
 			return 2.5 / 0.3, false
 		} else if strings.HasPrefix(name, "gemini-robotics-er-1.5") {
 			return 2.5 / 0.3, false
+		} else if strings.HasPrefix(name, "gemini-3.1-flash-lite") {
+			return 6, false
+		} else if strings.HasPrefix(name, "gemini-3.5-flash-lite") {
+			return 2.5 / 0.3, false
+		} else if strings.HasPrefix(name, "gemini-3.6") {
+			return 5, false
 		} else if strings.HasPrefix(name, "gemini-3-pro") {
 			if strings.HasPrefix(name, "gemini-3-pro-image") {
 				return 60, false
diff --git a/setting/ratio_setting/model_ratio_test.go b/setting/ratio_setting/model_ratio_test.go
new file mode 100644
index 000000000000..c228f912117c
--- /dev/null
+++ b/setting/ratio_setting/model_ratio_test.go
@@ -0,0 +1,52 @@
+package ratio_setting_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/QuantumNous/new-api/setting/ratio_setting"
+)
+
+func TestGemini3ModelRatios(t *testing.T) {
+	ratio_setting.InitRatioSettings()
+
+	tests := []struct {
+		model              string
+		expectedModelRatio float64
+		expectedCompRatio  float64
+	}{
+		{
+			model:              "gemini-3.1-flash-lite",
+			expectedModelRatio: 0.125,
+			expectedCompRatio:  6.0,
+		},
+		{
+			model:              "gemini-3.5-flash-lite",
+			expectedModelRatio: 0.15,
+			expectedCompRatio:  2.5 / 0.3,
+		},
+		{
+			model:              "gemini-3.6",
+			expectedModelRatio: 0.75,
+			expectedCompRatio:  5.0,
+		},
+		{
+			model:              "gemini-3.6-flash",
+			expectedModelRatio: 0.75,
+			expectedCompRatio:  5.0,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.model, func(t *testing.T) {
+			ratio, ok, _ := ratio_setting.GetModelRatio(tt.model)
+			require.True(t, ok, "model ratio for %s should exist", tt.model)
+			assert.InDelta(t, tt.expectedModelRatio, ratio, 0.0001, "model ratio mismatch for %s", tt.model)
+
+			compRatio := ratio_setting.GetCompletionRatio(tt.model)
+			assert.InDelta(t, tt.expectedCompRatio, compRatio, 0.0001, "completion ratio mismatch for %s", tt.model)
+		})
+	}
+}