OPEN SOURCE AI CHAT

Every model. One app.

Access ChatGPT, Claude, Gemini, and more. All in one place, for a fraction of the cost.

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$4/month + usage

All providers, one key

Stop juggling subscriptions and API keys. Access every major AI model through a single platform.

Pay for what you use

$4/month platform fee, then pay only for the tokens you actually consume. No expensive flat-rate plans.

Switch models mid-thought

Start with Kimi for brainstorming, switch to Claude for writing, then Gemini for research - all in one chat.

Every major provider.

OpenAI Anthropic Google Meta Mistral Qwen Moonshot MiniMax Z.ai Perplexity DeepSeek Cohere xAI

OPEN SOURCE

Built in the open. Fork it, self-host it, make it yours.

Fully open source under MIT. Self-host for free or pay $4/month for the hosted version with zero setup.

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Frequently asked questions

Why pay $4/month for an open-source project?

The subscription covers hosting, infrastructure, and ongoing development. If you prefer, you can self-host AI Studio for free - the entire codebase is MIT-licensed.

How does pricing compare to other platforms?

ChatGPT Plus is $20/mo, Claude Pro is $20/mo, Gemini Advanced is $20/mo. With AI Studio, you pay $4/mo plus only the tokens you use - most users spend $6–10/month total for access to all models.

What is OpenRouter?

OpenRouter is a unified API gateway that provides access to 600+ models from every major provider through a single API. AI Studio uses OpenRouter under the hood so you get access to everything.

How do I set up my own API key?

You can do that through OpenRouter's website. We explain it in easy steps inside the app.

Is my data private?

Your conversations are stored in your account and are never used for model training. When you self-host, you have full control over your data.