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GPT-4o mini — Fast, capable everyday model

Try top AI models right here, no account needed. When you need more, one BEST AI API key unlocks 190+ models at up to 85% off official prices.

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OpenAI, Claude & Gemini compatible · Pay as you go

190+ models, one API key

Leading model families, always up to date

OpenAI
Anthropic Claude
Google Gemini
DeepSeek
xAI Grok
Qwen
Moonshot Kimi
Zhipu GLM
Midjourney

gpt-6.1-sol · gpt-6.1-terra · claude-opus-5-5 · claude-sonnet-5-5 · gemini-4-argon · gemini-4-carbon · grok-4.7 · grok-4.7-build-fast · deepseek-v4.1-flash · deepseek-v4-pro · qwen3.8-max · qwen/qwen3.6-27b · kimi-k3.1-pro · kimi-k3 · glm-5.3 · glm-5.3-flash · MiniMax-M3.1-Flash · MiniMax-M3 · mimo-v2.6-pro · mimo-v2.6-flash · llama-3.3-70b-versatile · llama-3.1-8b-instant

Why BEST AI

Built for developers, priced for everyone

Everything you need to ship AI features without juggling vendors.

One key, every model

OpenAI, Claude, Gemini, DeepSeek, Grok, Qwen and more through a single API key and one bill.

Drop-in compatible

Native OpenAI, Claude and Gemini API formats. Change the base URL and keep your code, SDKs and tools.

Up to 72% off

Pay as you go from 28% of official pricing. No subscription and no monthly minimum.

Dedicated infrastructure

Enterprise-grade dedicated servers on a 2.5 Gbps network, served through Cloudflare’s global edge.

Transparent status

Public, real-time availability monitoring for every major model family.

Community support

Join our Telegram group for model launches, announcements and help.

Get started

Start building in three steps

Works with any OpenAI-compatible SDK, framework or app.

1
Create an account
Sign up at api.oaibest.com in under a minute.
2
Create an API key
Top up any amount, then create a key in the console.
3
Swap the base URL
Point your client to the base URL below. That’s it.

Get API Key

curl https://api.oaibest.com/v1/chat/completions \
  -H "Authorization: Bearer $BESTAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o-mini",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://api.oaibest.com/v1",
    api_key="sk-...",  # your BEST AI key
)

resp = client.chat.completions.create(
    model="claude-haiku-5-5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

import OpenAI from "openai";

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

const resp = await client.chat.completions.create({
  model: "gemini-flash-lite",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(resp.choices[0].message.content);

Base URLhttps://api.oaibest.com/v1

Works with your favorite apps

One-click setup from the console for popular clients.

Cherry StudioDesktop AI client CC SwitchClaude Code provider switcher BEST AI Web ChatFull-featured web chat with your key Claude Code / CodexCoding agents via dedicated groups

Pricing

Simple, pay-as-you-go pricing

Only pay for the tokens you use. Live per-model prices are listed in the model square.

No subscription
From 15% of official prices
Real-time usage logs

See model prices

FAQ

Frequently asked questions

Can’t find an answer? Ask in our Telegram group.

Is the AI chat really free? Do I need an account?

Yes. The chat on this page is free and needs no sign-up. To prevent abuse there is a daily limit per visitor, and you may occasionally see a quick Cloudflare check.

What are the free chat limits?

Each visitor gets a limited number of messages per minute, hour and day, and each conversation has a maximum number of rounds. When you hit the limit, you can wait for the reset or create a BEST AI API key for unlimited, pay-as-you-go access.

Which models can I use with the BEST AI API?

More than 190 models from OpenAI, Anthropic Claude, Google Gemini, DeepSeek, xAI Grok, Qwen, Kimi, GLM, Midjourney and more. See the live list with prices on the pricing page.

Is it compatible with the OpenAI SDK, Claude Code and other tools?

Yes. BEST AI supports the native OpenAI, Claude and Gemini API formats. Set the base URL to https://api.oaibest.com/v1 (or https://api.oaibest.com for Claude/Gemini clients) and use your BEST AI key.

How does pricing work?

Pay as you go: top up any amount and pay only for the tokens or requests you use, from about 28% of official prices. There is no subscription or monthly minimum.

What is the difference between the free chat and the API?

The free chat is a quick way to try a few lightweight models in your browser. The API gives you every model, higher limits and full control for your own apps, agents and tools.

Do you store my free chat conversations?

Free chat messages and IP addresses are logged for abuse prevention and security review, and automatically deleted after 30 days. Your chat history is also kept in your own browser, and you can clear it at any time. Please do not share sensitive information.

Why does my token say the quota is exhausted?

Check the token settings in the console; the token’s own limit may be too low. In token settings, 500,000 quota equals $1. We recommend an unlimited quota with no expiry.

Ready for unlimited AI?

Get an API key and use 190+ models in your apps, agents and tools.

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