diff --git a/go.mod b/go.mod
index 69ac5273..cb5bd6ac 100644
--- a/go.mod
+++ b/go.mod
@@ -13,9 +13,10 @@ require (
 	github.com/joho/godotenv v1.3.0
 	github.com/json-iterator/go v1.1.12
 	github.com/mojocn/base64Captcha v1.3.5
+	github.com/pkoukk/tiktoken-go v0.1.0
 	github.com/rhysd/go-github-selfupdate v1.2.3
 	github.com/spf13/cobra v1.2.1
-	github.com/stretchr/testify v1.7.1
+	github.com/stretchr/testify v1.8.2
 	github.com/xuri/excelize/v2 v2.5.0
 	github.com/yaoapp/gou v0.10.3
 	github.com/yaoapp/kun v0.9.0
@@ -24,6 +25,7 @@ require (
 )
 
 require (
+	github.com/dlclark/regexp2 v1.8.1 // indirect
 	github.com/google/go-github/v30 v30.1.0 // indirect
 	github.com/google/go-querystring v1.0.0 // indirect
 	github.com/inconshreveable/go-update v0.0.0-20160112193335-8152e7eb6ccf // indirect
diff --git a/go.sum b/go.sum
index 39142551..78a988f2 100644
--- a/go.sum
+++ b/go.sum
@@ -76,6 +76,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/dlclark/regexp2 v1.8.1 h1:6Lcdwya6GjPUNsBct8Lg/yRPwMhABj269AAzdGSiR+0=
+github.com/dlclark/regexp2 v1.8.1/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/elazarl/go-bindata-assetfs v1.0.1 h1:m0kkaHRKEu7tUIUFVwhGGGYClXvyl4RE03qmvRTNfbw=
 github.com/elazarl/go-bindata-assetfs v1.0.1/go.mod h1:v+YaWX3bdea5J/mo8dSETolEo7R71Vk1u8bnjau5yw4=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@@ -320,6 +322,8 @@ github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/sftp v1.10.1/go.mod h1:lYOWFsE0bwd1+KfKJaKeuokY15vzFx25BLbzYYoAxZI=
+github.com/pkoukk/tiktoken-go v0.1.0 h1:X1uP3+Nd8C3xe6AIGRWjchrylyaye0FDDTG22cxNQZs=
+github.com/pkoukk/tiktoken-go v0.1.0/go.mod h1:BijIqAP84FMYC4XbdJgjyMpiSjusU8x0Y0W9K2t0QtU=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/posener/complete v1.1.1/go.mod h1:em0nMJCgc9GFtwrmVmEMR/ZL6WyhyjMBndrE9hABlRI=
@@ -351,14 +355,18 @@ github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/viper v1.8.1/go.mod h1:o0Pch8wJ9BVSWGQMbra6iw0oQ5oktSIBaujf1rJH9Ns=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
+github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/subosito/gotenv v1.2.0/go.mod h1:N0PQaV/YGNqwC0u51sEeR/aUtSLEXKX9iv69rRypqCw=
 github.com/tcnksm/go-gitconfig v0.1.2 h1:iiDhRitByXAEyjgBqsKi9QU4o2TNtv9kPP3RgPgXBPw=
 github.com/tcnksm/go-gitconfig v0.1.2/go.mod h1:/8EhP4H7oJZdIPyT+/UIsG87kTzrzM4UsLGSItWYCpE=
diff --git a/main.go b/main.go
index 7ded00d2..b9bed45a 100644
--- a/main.go
+++ b/main.go
@@ -6,6 +6,7 @@ import (
 	_ "github.com/yaoapp/gou/encoding"
 	_ "github.com/yaoapp/yao/crypto"
 	_ "github.com/yaoapp/yao/helper"
+	_ "github.com/yaoapp/yao/openai"
 	_ "github.com/yaoapp/yao/utils"
 )
 
diff --git a/openai/openai.go b/openai/openai.go
new file mode 100644
index 00000000..22ec932a
--- /dev/null
+++ b/openai/openai.go
@@ -0,0 +1,13 @@
+package openai
+
+import "github.com/pkoukk/tiktoken-go"
+
+// Tiktoken get number of tokens
+func Tiktoken(model string, input string) (int, error) {
+	tkm, err := tiktoken.EncodingForModel(model)
+	if err != nil {
+		return 0, err
+	}
+	token := tkm.Encode(input, nil, nil)
+	return len(token), nil
+}
diff --git a/openai/process.go b/openai/process.go
new file mode 100644
index 00000000..bad5f911
--- /dev/null
+++ b/openai/process.go
@@ -0,0 +1,22 @@
+package openai
+
+import (
+	"github.com/yaoapp/gou/process"
+	"github.com/yaoapp/kun/exception"
+)
+
+func init() {
+	process.Register("yao.openai.tiktoken", ProcessTiktoken)
+}
+
+// ProcessTiktoken get number of tokens
+func ProcessTiktoken(process *process.Process) interface{} {
+	process.ValidateArgNums(2)
+	model := process.ArgsString(0)
+	input := process.ArgsString(1)
+	nums, err := Tiktoken(model, input)
+	if err != nil {
+		exception.New("Tiktoken error: %s", 400, err).Throw()
+	}
+	return nums
+}
diff --git a/openai/process_test.go b/openai/process_test.go
new file mode 100644
index 00000000..d653f0fe
--- /dev/null
+++ b/openai/process_test.go
@@ -0,0 +1,19 @@
+package openai
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/yaoapp/gou/process"
+)
+
+func TestTiktoken(t *testing.T) {
+	// Hash
+	args := []interface{}{"gpt-3.5-turbo", "hello world"}
+	res := process.New("yao.openai.Tiktoken", args...).Run()
+	assert.Equal(t, 2, res)
+
+	args = []interface{}{"gpt-3.5-turbo", "你好世界！"}
+	res = process.New("yao.openai.Tiktoken", args...).Run()
+	assert.Equal(t, 6, res)
+}