# Use Hanzo AI with Go — Hanzo AI

> Use Hanzo AI in Go using the official OpenAI Go client or any OpenAI-compatible Go library. Hanzo's standard REST API works with all HTTP clients.

[Integrations](https://hanzo.ai/integrations)/Go

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# Use Hanzo AI with Go

Use Hanzo AI in Go using the official OpenAI Go client or any OpenAI-compatible Go library. Hanzo's standard REST API works with all HTTP clients.

Base URL: `https://api.hanzo.ai/v1`

API Key: Get yours at [hanzo.ai/signup](https://hanzo.ai/signup) · Fully OpenAI-compatible · 500+ models available

🐹

Created by [Go Authors / Google](https://go.dev)

License: BSD-3-Clause · [View source on GitHub →](https://github.com/golang/go)

Hanzo AI is OpenAI-compatible, so existing Go code works with zero refactoring. We deeply appreciate the Go Authors / Google team for building and maintaining this open-source project.

## OpenAI Go client

go

```
go get github.com/openai/openai-go package main import ( "context" "fmt" "github.com/openai/openai-go" "github.com/openai/openai-go/option" ) func main() { client := openai.NewClient( option.WithBaseURL("https://api.hanzo.ai/v1"), option.WithAPIKey("your-hanzo-api-key"), ) resp, _ := client.Chat.Completions.New(context.Background(), openai.ChatCompletionNewParams{ Model: openai.F("zen4-pro"), Messages: openai.F([]openai.ChatCompletionMessageParamUnion{ openai.UserMessage("Hello from Go!"), }), }, ) fmt.Println(resp.Choices[0].Message.Content) }
```

## Raw HTTP client

go

```
package main import ( "bytes" "encoding/json" "fmt" "io" "net/http" "os" ) func main() { body, _ := json.Marshal(map[string]any{ "model": "zen4-pro", "messages": []map[string]string{{"role": "user", "content": "Hello!"}}, }) req, _ := http.NewRequest("POST", "https://api.hanzo.ai/v1/chat/completions", bytes.NewReader(body)) req.Header.Set("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY")) req.Header.Set("Content-Type", "application/json") resp, _ := http.DefaultClient.Do(req) defer resp.Body.Close() io.Copy(os.Stdout, resp.Body) fmt.Println() }
```

## Streaming

go

```
stream, _ := client.Chat.Completions.NewStreaming(context.Background(), openai.ChatCompletionNewParams{ Model: openai.F("zen4-pro"), Messages: openai.F([]openai.ChatCompletionMessageParamUnion{ openai.UserMessage("Write a poem"), }), }, ) defer stream.Close() for stream.Next() { chunk := stream.Current() if len(chunk.Choices) > 0 { fmt.Print(chunk.Choices[0].Delta.Content) } }
```

## Environment

bash

```
export HANZO_API_KEY="your-hanzo-api-key" go run main.go
```

## Ready to get started?

Create a free account and get your API key. 100K API calls/month free forever.

[Get API Key — Free](https://hanzo.ai/signup)[Browse Models](https://hanzo.ai/models)

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