diff --git a/common/ctxkey/key.go b/common/ctxkey/key.go
index 5e22d282..574bed16 100644
--- a/common/ctxkey/key.go
+++ b/common/ctxkey/key.go
@@ -2,6 +2,7 @@ package ctxkey
 
 const (
 	Id                = "id"
+	RequestId         = "X-Oneapi-Request-Id"
 	Username          = "username"
 	Role              = "role"
 	Status            = "status"
diff --git a/common/logger/constants.go b/common/logger/constants.go
index 78d32062..49df31ec 100644
--- a/common/logger/constants.go
+++ b/common/logger/constants.go
@@ -1,7 +1,3 @@
 package logger
 
-const (
-	RequestIdKey = "X-Oneapi-Request-Id"
-)
-
 var LogDir string
diff --git a/common/logger/logger.go b/common/logger/logger.go
index bd30246b..ecb108c3 100644
--- a/common/logger/logger.go
+++ b/common/logger/logger.go
@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/Laisky/one-api/common/config"
+	"github.com/Laisky/one-api/common/ctxkey"
 	"github.com/Laisky/one-api/common/helper"
 	"github.com/gin-gonic/gin"
 )
@@ -87,7 +88,7 @@ func logHelper(ctx context.Context, level string, msg string) {
 	if level == loggerINFO {
 		writer = gin.DefaultWriter
 	}
-	id := ctx.Value(RequestIdKey)
+	id := ctx.Value(ctxkey.RequestId)
 	if id == nil {
 		id = helper.GenRequestID()
 	}
diff --git a/controller/relay.go b/controller/relay.go
index 81906691..967a9be8 100644
--- a/controller/relay.go
+++ b/controller/relay.go
@@ -59,7 +59,7 @@ func Relay(c *gin.Context) {
 	group := c.GetString(ctxkey.Group)
 	originalModel := c.GetString(ctxkey.OriginalModel)
 	go processChannelRelayError(ctx, channelId, channelName, bizErr)
-	requestId := c.GetString(logger.RequestIdKey)
+	requestId := c.GetString(ctxkey.RequestId)
 	retryTimes := config.RetryTimes
 	if err := shouldRetry(c, bizErr.StatusCode); err != nil {
 		logger.Errorf(ctx, "relay error happen, won't retry since of %v", err.Error())
diff --git a/controller/token.go b/controller/token.go
index 80620394..235be6be 100644
--- a/controller/token.go
+++ b/controller/token.go
@@ -16,6 +16,28 @@ import (
 	"github.com/jinzhu/copier"
 )
 
+func GetRequestCost(c *gin.Context) {
+	reqId := c.Param("request_id")
+	if reqId == "" {
+		c.JSON(http.StatusOK, gin.H{
+			"success": false,
+			"message": "request_id 不能为空",
+		})
+		return
+	}
+
+	docu, err := model.GetCostByRequestId(reqId)
+	if err != nil {
+		c.JSON(http.StatusOK, gin.H{
+			"success": false,
+			"message": err.Error(),
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, docu)
+}
+
 func GetAllTokens(c *gin.Context) {
 	userId := c.GetInt(ctxkey.Id)
 	p, _ := strconv.Atoi(c.Query("p"))
diff --git a/middleware/distributor.go b/middleware/distributor.go
index b3c99316..85dea881 100644
--- a/middleware/distributor.go
+++ b/middleware/distributor.go
@@ -6,6 +6,7 @@ import (
 	"strconv"
 	"strings"
 
+	gutils "github.com/Laisky/go-utils/v4"
 	"github.com/Laisky/one-api/common/ctxkey"
 	"github.com/Laisky/one-api/common/logger"
 	"github.com/Laisky/one-api/model"
@@ -75,6 +76,11 @@ func SetupContextForSelectedChannel(c *gin.Context, channel *model.Channel, mode
 	c.Set(ctxkey.ChannelRatio, minimalRatio)
 	c.Set(ctxkey.ChannelModel, channel)
 
+	// generate an unique cost id for each request
+	if _, ok := c.Get(ctxkey.RequestId); !ok {
+		c.Set(ctxkey.RequestId, gutils.UUID7())
+	}
+
 	c.Set(ctxkey.Channel, channel.Type)
 	c.Set(ctxkey.ChannelId, channel.Id)
 	c.Set(ctxkey.ChannelName, channel.Name)
diff --git a/middleware/logger.go b/middleware/logger.go
index 25fd1b34..496b3ab1 100644
--- a/middleware/logger.go
+++ b/middleware/logger.go
@@ -2,7 +2,8 @@ package middleware
 
 import (
 	"fmt"
-	"github.com/Laisky/one-api/common/logger"
+
+	"github.com/Laisky/one-api/common/ctxkey"
 	"github.com/gin-gonic/gin"
 )
 
@@ -10,7 +11,7 @@ func SetUpLogger(server *gin.Engine) {
 	server.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string {
 		var requestID string
 		if param.Keys != nil {
-			requestID = param.Keys[logger.RequestIdKey].(string)
+			requestID = param.Keys[ctxkey.RequestId].(string)
 		}
 		return fmt.Sprintf("[GIN] %s | %s | %3d | %13v | %15s | %7s %s\n",
 			param.TimeStamp.Format("2006/01/02 - 15:04:05"),
diff --git a/middleware/request-id.go b/middleware/request-id.go
index 3042f608..447f5e3f 100644
--- a/middleware/request-id.go
+++ b/middleware/request-id.go
@@ -2,18 +2,19 @@ package middleware
 
 import (
 	"context"
+
+	"github.com/Laisky/one-api/common/ctxkey"
 	"github.com/Laisky/one-api/common/helper"
-	"github.com/Laisky/one-api/common/logger"
 	"github.com/gin-gonic/gin"
 )
 
 func RequestId() func(c *gin.Context) {
 	return func(c *gin.Context) {
 		id := helper.GenRequestID()
-		c.Set(logger.RequestIdKey, id)
-		ctx := context.WithValue(c.Request.Context(), logger.RequestIdKey, id)
+		c.Set(ctxkey.RequestId, id)
+		ctx := context.WithValue(c.Request.Context(), ctxkey.RequestId, id)
 		c.Request = c.Request.WithContext(ctx)
-		c.Header(logger.RequestIdKey, id)
+		c.Header(ctxkey.RequestId, id)
 		c.Next()
 	}
 }
diff --git a/middleware/utils.go b/middleware/utils.go
index 0bd2a10c..2d717345 100644
--- a/middleware/utils.go
+++ b/middleware/utils.go
@@ -2,17 +2,19 @@ package middleware
 
 import (
 	"fmt"
+	"strings"
+
 	"github.com/Laisky/one-api/common"
+	"github.com/Laisky/one-api/common/ctxkey"
 	"github.com/Laisky/one-api/common/helper"
 	"github.com/Laisky/one-api/common/logger"
 	"github.com/gin-gonic/gin"
-	"strings"
 )
 
 func abortWithMessage(c *gin.Context, statusCode int, message string) {
 	c.JSON(statusCode, gin.H{
 		"error": gin.H{
-			"message": helper.MessageWithRequestId(message, c.GetString(logger.RequestIdKey)),
+			"message": helper.MessageWithRequestId(message, c.GetString(ctxkey.RequestId)),
 			"type":    "one_api_error",
 		},
 	})
diff --git a/model/cost.go b/model/cost.go
new file mode 100644
index 00000000..35118917
--- /dev/null
+++ b/model/cost.go
@@ -0,0 +1,47 @@
+package model
+
+import (
+	"github.com/Laisky/one-api/common/helper"
+	"github.com/pkg/errors"
+)
+
+type UserRequestCost struct {
+	Id          int     `json:"id"`
+	CreatedTime int64   `json:"created_time" gorm:"bigint"`
+	UserID      int     `json:"user_id"`
+	RequestID   string  `json:"request_id"`
+	Quota       int64   `json:"quota"`
+	CostUSD     float64 `json:"cost_usd" gorm:"-"`
+}
+
+// NewUserRequestCost create a new UserRequestCost
+func NewUserRequestCost(userID int, quotaID string, quota int64) *UserRequestCost {
+	return &UserRequestCost{
+		CreatedTime: helper.GetTimestamp(),
+		UserID:      userID,
+		RequestID:   quotaID,
+		Quota:       quota,
+	}
+}
+
+func (docu *UserRequestCost) Insert() error {
+	var err error
+	err = DB.Create(docu).Error
+	return errors.Wrap(err, "failed to insert UserRequestCost")
+}
+
+// GetCostByRequestId get cost by request id
+func GetCostByRequestId(reqid string) (*UserRequestCost, error) {
+	if reqid == "" {
+		return nil, errors.New("request id is empty")
+	}
+
+	docu := &UserRequestCost{RequestID: reqid}
+	var err error = nil
+	if err = DB.First(docu, "request_id = ?", reqid).Error; err != nil {
+		return nil, errors.Wrap(err, "failed to get cost by request id")
+	}
+
+	docu.CostUSD = float64(docu.Quota) / 500000
+	return docu, nil
+}
diff --git a/model/main.go b/model/main.go
index 34730ddd..c046c875 100644
--- a/model/main.go
+++ b/model/main.go
@@ -121,6 +121,10 @@ func InitDB(envName string) (db *gorm.DB, err error) {
 		if err != nil {
 			return nil, err
 		}
+		err = db.AutoMigrate(&UserRequestCost{})
+		if err != nil {
+			return nil, err
+		}
 		err = db.AutoMigrate(&Token{})
 		if err != nil {
 			return nil, err
diff --git a/relay/controller/helper.go b/relay/controller/helper.go
index 62054049..66bcb8ac 100644
--- a/relay/controller/helper.go
+++ b/relay/controller/helper.go
@@ -160,12 +160,11 @@ func preConsumeQuota(ctx context.Context, textRequest *relaymodel.GeneralOpenAIR
 	return preConsumedQuota, nil
 }
 
-func postConsumeQuota(ctx context.Context, usage *relaymodel.Usage, meta *meta.Meta, textRequest *relaymodel.GeneralOpenAIRequest, ratio float64, preConsumedQuota int64, modelRatio float64, groupRatio float64) {
+func postConsumeQuota(ctx context.Context, usage *relaymodel.Usage, meta *meta.Meta, textRequest *relaymodel.GeneralOpenAIRequest, ratio float64, preConsumedQuota int64, modelRatio float64, groupRatio float64) (quota int64) {
 	if usage == nil {
 		logger.Error(ctx, "usage is nil, which is unexpected")
 		return
 	}
-	var quota int64
 	completionRatio := billingratio.GetCompletionRatio(textRequest.Model)
 	promptTokens := usage.PromptTokens
 	completionTokens := usage.CompletionTokens
@@ -193,6 +192,8 @@ func postConsumeQuota(ctx context.Context, usage *relaymodel.Usage, meta *meta.M
 	model.RecordConsumeLog(ctx, meta.UserId, meta.ChannelId, promptTokens, completionTokens, textRequest.Model, meta.TokenName, quota, logContent)
 	model.UpdateUserUsedQuotaAndRequestCount(meta.UserId, quota)
 	model.UpdateChannelUsedQuota(meta.ChannelId, quota)
+
+	return
 }
 
 func getMappedModelName(modelName string, mapping map[string]string) (string, bool) {
diff --git a/relay/controller/text.go b/relay/controller/text.go
index 6e700c25..e38b3aa7 100644
--- a/relay/controller/text.go
+++ b/relay/controller/text.go
@@ -8,7 +8,9 @@ import (
 	"strings"
 
 	"github.com/Laisky/errors/v2"
+	"github.com/Laisky/one-api/common/ctxkey"
 	"github.com/Laisky/one-api/common/logger"
+	"github.com/Laisky/one-api/model"
 	"github.com/Laisky/one-api/relay"
 	"github.com/Laisky/one-api/relay/adaptor/openai"
 	"github.com/Laisky/one-api/relay/apitype"
@@ -16,11 +18,11 @@ import (
 	billingratio "github.com/Laisky/one-api/relay/billing/ratio"
 	"github.com/Laisky/one-api/relay/channeltype"
 	"github.com/Laisky/one-api/relay/meta"
-	"github.com/Laisky/one-api/relay/model"
+	relaymodel "github.com/Laisky/one-api/relay/model"
 	"github.com/gin-gonic/gin"
 )
 
-func RelayTextHelper(c *gin.Context) *model.ErrorWithStatusCode {
+func RelayTextHelper(c *gin.Context) *relaymodel.ErrorWithStatusCode {
 	ctx := c.Request.Context()
 	meta := meta.GetByContext(c)
 	// get & validate textRequest
@@ -108,7 +110,19 @@ func RelayTextHelper(c *gin.Context) *model.ErrorWithStatusCode {
 		billing.ReturnPreConsumedQuota(ctx, preConsumedQuota, meta.TokenId)
 		return respErr
 	}
+
 	// post-consume quota
-	go postConsumeQuota(ctx, usage, meta, textRequest, ratio, preConsumedQuota, modelRatio, groupRatio)
+	go func() {
+		quota := postConsumeQuota(c, usage, meta, textRequest, ratio, preConsumedQuota, modelRatio, groupRatio)
+		docu := model.NewUserRequestCost(
+			c.GetInt(ctxkey.Id),
+			c.GetString(ctxkey.RequestId),
+			quota,
+		)
+		if err = docu.Insert(); err != nil {
+			logger.Errorf(c, "insert user request cost failed: %+v", err)
+		}
+	}()
+
 	return nil
 }
diff --git a/router/api.go b/router/api.go
index 7d84e301..4575c805 100644
--- a/router/api.go
+++ b/router/api.go
@@ -94,6 +94,10 @@ func SetApiRouter(router *gin.Engine) {
 			tokenRoute.PUT("/", controller.UpdateToken)
 			tokenRoute.DELETE("/:id", controller.DeleteToken)
 		}
+		costRoute := apiRouter.Group("/cost")
+		{
+			costRoute.GET("/request/:request_id", controller.GetRequestCost)
+		}
 		redemptionRoute := apiRouter.Group("/redemption")
 		redemptionRoute.Use(middleware.AdminAuth())
 		{