The fatSTACK cardboard room at night: a bed, a desk with a laptop and lamp, fairy lights and a window full of stars

fatSTACK · private beta

A cozy AI that lives in a box on your PC.

It looks stuff up for you, shows you where every answer came from, and keeps poking around while you're out. All of it stays on your computer.

Meet Cache.

Cache lives in a little cardboard room on your desktop. Ask him whatever. He'll go read the web, papers, even podcasts, then come back with an answer and the receipts. Heading out to grab food? He'll look into the stuff you're into while you're gone.

Windows 10/11 · 16 GB RAM · 8 GB GPU recommended · free while it's in beta

A fatSTACK research report: a bold answer about naps and memory, explained with numbered citations and confidence labels fatSTACK settings for research depth: Quick, Standard and Deep
fatSTACK History: past research grouped by question, expandable like a folder tree
A cited fatSTACK report with confidence labels on each finding

Research

Answers with receipts.

Ask something and Cache figures out how hard to look. Easy question, quick answer. Tricky one, he goes deep. He reads articles, papers, YouTube and podcasts, and only keeps the stuff he can actually quote.

Every line links back to where it came from. If sources disagree, he tells you instead of picking one and hoping.

fatSTACK History with past research grouped by question

Memory

He doesn't forget stuff.

Everything Cache finds gets saved to a private memory on your PC. Ask about something related next week and he'll pull up what you already dug into, and give you a heads up if newer info says otherwise.

You can just chat with him too. He checks your old research first and offers to go deeper if you want.

The cardboard room in the daytime, with sunlight through the window over the bed and desk

While you're away

Step away. He's on it.

When you leave your desk, Cache goes and reads up on stuff you're into. When you're back, there's a few cards waiting on your For You page, each with a quick note on why he picked it. No infinite scroll.

He figures out when you're usually around, stops the second you're back, and gets out of the way when a game needs your GPU.

You pick how much freedom he gets.

Three modes. Switch whenever. New installs start in Lockdown.

Lockdown

He only does stuff when you ask.

Auto Roam

He reads up on your interests while you're away, a few times a day.

Hibernate

Same deal, but only during the quiet hours you set.

Privacy

Your stuff stays on your PC.

The AI runs on your own graphics card. Chats, research, memory, all of it lives on your computer, and you can wipe any of it whenever.

  • Runs locally. Open models on your own hardware. No cloud bill.
  • Stored on your PC. Nothing gets uploaded. Nothing gets tracked.
  • Yours to delete. Forget one run or wipe everything. Your call.

Stuff people ask

Is it free?

Yep. Totally free during the beta.

What do I need?

Windows 10 or 11 and 16 GB of RAM. A GPU with 8 GB of memory is the sweet spot. Smaller cards still work, just slower.

Does it need the internet?

For research, yeah, since he reads the web. The AI itself runs on your PC.

Why does Windows warn me when I install it?

We haven't code-signed the beta yet, so Windows throws an "unknown publisher" warning. Hit More info, then Run anyway.

Is there a Mac version?

Not yet. Windows only for now.

Move Cache into your PC.

We're letting people in a few at a time. Drop your email and we'll send a download link when it's your turn.