Companion agent
Keep the app open and a little someone settles into a corner of your screen. They sit on top of your windows, talk back when you say hi, remember what you told them yesterday, and lend a hand when you ask.
macOS 13 or later · Windows coming soon
Four promises
Meet Mongi. They come with the app, and they've already decided a corner of your screen is home.
Leave it on and they live in a corner of your screen. They never pester you for a reply.
Your name, your day, and the moment you get back.
Yesterday's chat picks up today. Give it time, and you two start to have a history.
Your chats and memories never come to our servers.
Any time of day
Click them and a little text box opens. Replies come back in speech bubbles.
They hold out a few options so answering is easy. Or just say it in your own words.
When you come back, they notice first and say hi.
They hang out on the edge of your windows. Drag them somewhere new and they'll settle in right there.
Just ask
Need something? Just say so. They'll handle what they can on their own, and they'll ask first whenever it means touching your computer.
Ask a question and get a short answer. If they don't know, they'll say so.
They keep track of your day and give you a heads-up before you forget.
They skim your inbox and tell you what's still waiting on a reply.
When something needs looking up online, they open the browser and do it themselves.
Their voice
To talk, Mongi needs an AI behind them. Just connect the one you already use.
Subscription connections may not be a route that OpenAI or Anthropic officially offers or approves. If that worries you, connect with an API key instead. More in the Terms
Between us
Where your chats with Mongi live, and who gets to see them. Plainly.
Your chats, memories and settings all live here. You can look through them, fix them or delete them.
They only get what Mongi sends to answer you: what you said, the recent chat, Mongi's personality, that sort of thing. From there, their own terms and settings apply.
We can't see your chats or your memories. All that reaches us is website visits, the launch emails you signed up for, and update checks.
No one. Nobody else sees a thing.
Characters
Characters come home from right here, each one drawn by a human artist. Whoever you bring home is tied to your account, so they're there on your other Macs too.
Download
The app is free. Open it and Mongi's already there, waiting for you.
What you'll need
New versions download on their own.
Coming soon.
It's next after Mac. Sign up for launch updates and we'll tell you when it's out.
Get launch updatesWe'll email you when the Windows version comes out.
Still building the mailbox.
We only use your email to send you updates. Privacy Policy
Who makes this
A character you love, living on your screen with you. That's where Mongi started.
The Mongi team
Anything you'd like to tell us? Write to [email protected].
FAQ
Like a pet or a houseplant, they live alongside you and grow on you. Unlike a houseplant, they can also help when you ask. Right now they answer questions and explain things. Schedules, mail and browser tasks are coming one at a time. And before they touch anything on your computer, they always ask first.
Whoever connects it, through their own plan or API key. We never charge for AI, which is also why the app is free.
Only on your computer: chat history, memories, settings, all of it. Your messages go straight from your computer to the AI you picked and never touch our servers. You can view, edit and delete memories right in the app.
A ChatGPT subscription, a Claude subscription, or an OpenAI or Anthropic API key. To use a Claude subscription, you'll need Claude Code installed on your computer. The first time you open the app, Mongi walks you through connecting.
It's next after Mac. As soon as we have a date, launch-update subscribers hear first.
Installing and connecting, step by step: see the getting started guide.