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Yo 2 · Free, open source and out today

Switch models,
not apps.

Yo is a free, open-source home for a team of AI agents that run on the subscriptions you already have: Claude, ChatGPT or Grok.

One agent, front and centre. Ask for several things and helpers pop in.

Download View on GitHub

For Macs with Apple silicon. Windows and Linux run it in your browser.

Meet the team.

Yo leads and talks to you. Add a teammate whenever a job deserves its own: research, building, your inbox, writing, keeping watch. Each one has a name, its own memory and the model you pick. They message each other quietly, and a new one introduces itself and asks one question about its job.

Bring your own
subscription.

Sign in with the Claude, ChatGPT or Grok plan you already pay for, and give each agent its own model. When a better one ships, you change a dropdown. Your agents keep their names, their memory and their work.

  • No API keys. No second bill. Agents use your plan and its limits.
  • Your password stays with them. You sign in on each provider's own page.
  • Mix them on one team. Claude on one agent, ChatGPT on another, in the same chat.

Your team

  • YoLead
  • DewResearch
  • Dew's model
  • PicoBuilder
  • KikiScout

Same agent, same memory. Only the model changes.

Its own computer.
Not yours.

Your agents work on their own Linux computer, with a browser, a terminal and files. It runs on your Mac, or on a PC at home that stays on, and it never touches your own browser. Watch it work, or take over when a login needs you.

Kiki has control

Your data stays
on your Mac.

Yo runs on your own machine, on the subscriptions you already have. There's no Yo account and no analytics, and your prompts never pass through us.

Coming soon

On your phone too.

Text your agents from your phone, answer what they ask, and check in while you're out. Messages are end-to-end encrypted, and nothing at home is opened to the internet. We're testing it now, and it isn't open to everyone yet.

So what are we selling you? Nothing.

Yo is free and open source under the Apache-2.0 licence. You can't pay us for AI: your prompts go from your machine straight to your provider, never through us. Every line is on GitHub. Read it, fix it, or fork it.

View on GitHub Read the licence

Yo is free.
It always will be.

No paywall, no premium tier, and we don't sell AI. You bring your own. If Yo gives you back a little time, you can give a little back. It keeps the lights on and new things shipping.

Not into that? Totally fine. A star on GitHub or telling a friend helps just as much.

Support Yo

Optional, and everything stays free either way.

Sponsor monthly

Support is a gift. It doesn't unlock anything, it isn't refundable, and Yo isn't a charity, so it isn't tax-deductible. Terms

Questions.
Short answers.

Is it really free?

Yes. Yo is free and open source under Apache-2.0: no paywall, no premium tier, no Yo account. You keep paying your AI provider for the plan you already have. If you like, you can support Yo. Nothing changes either way.

Is using my Claude or ChatGPT subscription allowed?

Yo never logs in for you or holds your password. You sign in with each provider's own tool (Claude Code, Codex or the Grok CLI), and your agents drive it, like other open-source apps do. Each provider sets its own rules and limits, and they change, so check them: Anthropic, OpenAI and xAI. Agents use a plan's limits faster than chatting does. If a provider's rules change, move that agent to another. It's a dropdown, not a new app.

What do I need?

A Mac with Apple silicon (M1 or newer) and macOS 13 or newer, with at least 16 GB of memory (32 GB is better) and about 20 GB of free disk space. And a Claude, ChatGPT or Grok subscription.

On a Windows or Linux PC, Yo runs in Docker and you use it in your browser: 8 GB of memory (16 GB is better), 4 cores and 15 GB free. You can also run its computer on an always-on home PC, so your agents keep working while your laptop is closed. How to install it on a PC

Where does my data go?

Nowhere new. Your chats, memory and files stay on your machine, and there's no Yo account and no analytics. Requests go from your machine to the provider you picked, under your own account. Privacy policy

Can I try it today?

Yes. Download it for a Mac with Apple silicon, or run it in your browser on a Windows or Linux PC. There's no waitlist and no sign-up. Only the phone app is still in testing.

macOS says it can't verify Yo. How do I open it?

Yo's builds aren't notarized by Apple, so macOS asks you to confirm it once. Open Yo and click Done on the warning. Then open System Settings → Privacy & Security, scroll down to “Yo was blocked” and click Open Anyway, then Open Anyway again and enter your Mac password. On macOS 13 or 14 you can instead right-click Yo in Applications, choose Open, then Open again. Or run this once in Terminal: xattr -dr com.apple.quarantine /Applications/Yo.app

Can my agents spend money or send things without me?

Only if you let them. You choose which actions need your OK, and they show up in Needs you. Yo doesn't solve captchas or know your passwords: for a login or a 2FA code, you type it yourself or take over its screen.

Who makes Yo?

An independent developer, in the open. Every release is built on GitHub's servers and published on its releases page. Found a bug? Use Report a problem in the app, or open an issue. More help is on the help page.

Your team is waiting.

Free, open source, and on the subscription you already have.

Download View on GitHub