Drop-in OpenAI-compatible. Every frontier model. One Token.

curl https://api.tonboai.com/v1/chat/completions \
  -H "Authorization: Bearer $TONBO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-4.5-sonnet",
    "messages": [
      { "role": "user", "content": "Explain TUN mode in 1 line." }
    ],
    "stream": true
  }'

from openai import OpenAI

client = OpenAI(
    api_key="<TONBO_API_KEY>",
    base_url="https://api.tonboai.com/v1",
)

# 1) Switch to GPT-5 mid-conversation
resp = client.chat.completions.create(
    model="gpt-5",
    messages=[{"role": "user", "content": "Refactor this fn"}],
)

# 2) Same Token, different model — no extra subscription
resp2 = client.chat.completions.create(
    model="claude-4.5-opus",
    messages=[{"role": "user", "content": "Same task, more thinking"}],
)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.TONBO_API_KEY,
  baseURL: "https://api.tonboai.com/v1",
});

// One Token, every model
const stream = await client.chat.completions.create({
  model: "claude-4.5-sonnet",   // or "gpt-5", "gemini-2.5-pro", "grok-4"
  messages: [{ role: "user", content: "Build me a Next.js page" }],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}

package main

import (
	"context"
	"fmt"
	openai "github.com/sashabaranov/go-openai"
)

func main() {
	cfg := openai.DefaultConfig("<TONBO_API_KEY>")
	cfg.BaseURL = "https://api.tonboai.com/v1"
	client := openai.NewClientWithConfig(cfg)

	resp, _ := client.CreateChatCompletion(
		context.Background(),
		openai.ChatCompletionRequest{
			Model: "claude-4.5-sonnet",
			Messages: []openai.ChatCompletionMessage{
				{Role: "user", Content: "Hello"},
			},
		},
	)
	fmt.Println(resp.Choices[0].Message.Content)
}