The easiest & safest way to work with AI.
Software engineers are getting the most out of AI. Now it's your turn. Bend your favorite AI model to your will.
"You're my bookkeeper. Look at my monthly statements, sort my expenses, and give me a simple summary of how the quarter went."
✓ Here's how your last quarter looked:
I saved the full breakdown as Quarter Summary in your folder, so it's ready whenever you need it.
Everything you need to make AI truly yours.
No more uploading/downloading files on chat windows. With PiUI, you can have different models working directly on your computer — safely, on your terms, and without wasting money on unnecessary tokens.
Create Your Own Agents in Seconds
An agent is just a folder with a job. Tell it how you work once, in plain everyday English, and it remembers — so you never repeat yourself.
Use Any Model, Switch Anytime
Use Perplexity for research, Claude to digest, then Gemini to build a client branded presentation. All in one conversation, without losing context.
No Technical Knowledge Needed
No command line, no coding, no complicated setup. If you can pick a folder on your computer and use a chat, you already know how to use PiUI.
Private by Design
Everything happens on your computer. Run models directly on your machine. Prefer total privacy? Go offline and stay 100% secure.
Share Agents With Anyone
Built an agent you love? Export it and send it to a friend or coworker. Install the ones they share with you. Great work spreads in a click.
AI That Stays On Task
Ever notice AI drifting off or making things up? That happens when a chat clutters its memory. PiUI keeps things focused on exactly what you asked.
Up and running in 3 effortless steps
There’s nothing new to learn. PiUI works directly on your computer, so there are no new tools to master. Just pick a folder and put your favorite model to work.
Pick a Folder on Your computer
Choose a folder on your computer. It can be a folder with receipts, notes, client files, or spreadsheets. That folder becomes your workspace — the place where the AI model works from.
Ask in Plain English
Tell your favorite model what you want the way you’d tell a person: “read the files in this folder and give me a summary” or “draft a proposal for client `X` based on our last 4 emails”.
Get Real Work Back
It reads your files and writes results right back into your folder — summaries, reports, drafts. No matter what you are working on, PiUI helps you get it done faster while reducing token consumption and hallucinations.
Build Agents with one click.
Get actual work done.
Turn the tasks you do over and over into a helper that already knows how you like things done. Here’s what real people are using PiUI for:
Automated Bookkeeper
Sort your expenses, tidy up your numbers, and see how you did — without the spreadsheet headache.
How it works:
- Drop your monthly statements and invoices into a folder on your computer.
- Open that folder in PiUI and tell it to be your bookkeeper.
- Ask it to add up your income and expenses, or compare month to month.
- Get a clean, easy-to-read summary saved right back into your folder.
The difference between talking to AI and putting it to work.
A chat window gives you no control over the model's context, forcing you to spend more money in tokens and leading the model to hallucinate. PiUI gives you full control over the model's context, reducing hallucinations and saving you money.
Ready to experience AI that actually works for you?
PiUI is now available for macOS, Windows, and Linux. Choose your operating system below to download and start prompting right away.
macOS
Apple Silicon & Intel
Windows
Windows 10 / 11
Linux
All Modern Distros
Need SHA-256 checksums or Debian packages?
Visit our dedicated downloads page for security verification, install commands, and release notes.
Frequently Asked Questions
Everything you need to know before you get started — in plain language.