Your assistant,
on your computer.

Ken lives on your computer. It works while you're away, remembers what you tell it, and does real things — not just answers. Powered by Claude, on the subscription you already have.

Download for Mac

macOS 14 or newer · Needs a Claude subscription · Free and open source

KenOpus 5.5
Hey, I'm Ken. Your assistant.
Tell me what you do for work and what you'd like off your plate.
my site is down?? fix it please
Your SSL certificate had expired. I renewed it and the site is back up. I also set it to renew on its own, so this can't happen again.
0:06
Remind me to call the dentist at 9 tomorrow.
Done — I'll remind you at 9:00.
Tell Ken what you need…

What it's like

Always on

Close the window; Ken keeps working. Hand it something for later, or get a short brief every morning.

Remembers you

Your preferences, projects and rules live in Ken's memory on your computer. Tell it once.

Does real things

Browses the web, writes and runs code, and uses the tools already on your computer. If you can describe it, Ken can usually do it.

Private

Everything stays on your computer. Voice notes are transcribed on it. We can't see any of it.

Up in two minutes

01

Download Ken

One file. Open it and drag Ken to Applications.

02

Connect Claude

One click signs you in with the Claude subscription you already have.

03

Talk to it

Type, or send a voice note. Ken works, replies, and remembers.

Questions

Do I need a Claude subscription?

Yes, Claude Pro or Max. Ken signs in with it once and runs on it. There's nothing to pay us.

What can it actually do?

Anything you could do at your computer: browse the web, write and run code, read and edit files, set reminders, send you a morning brief, and use the tools you already have installed. It's told to ask before anything that leaves your computer or can't be undone.

Is it private?

Your memory, files and voice notes stay on your computer; voice is transcribed right there. Your messages go to Claude to be answered, the same as when you use Claude directly. We never see any of it.

Does it keep working when I close the window?

Yes. Ken lives in the menu bar and keeps going; closing the window just hides it. Quit it and it stops. Click the coffee cup in the app if you want your computer to stay awake for a long job.

Can I use it from my phone?

Yes, through Telegram. Today that needs the terminal install (the “Server or any machine” tab); phone setup inside the Mac app is coming.

Which computers does it run on?

The app runs on Macs with macOS 14 or newer, Apple Silicon or Intel. The terminal install runs on any Mac or Linux machine. Windows isn't supported yet.

How do updates work?

The app updates itself in the background. You never have to download anything again.

Is it free?

Yes. Ken is open source under the MIT license. The only cost is your Claude subscription.

Built with ♥ by PrasannOpen source on GitHub