Your AI’s external hard drive.
Your AI keeps it in order.

The AI model is the processor: it thinks, and you swap it when a better one comes out. Par is what you carry from one AI to the next, like a drive: your files, your memory and your knowledge, and the apps that live on it.

Get started See how
A hand holds a small cream pocket drive with the Par logo on top and plugs its cable into a friendly red computer whose screen shows a big yellow sparkle. Two more computers, one green and one blue, wait behind with sparkles of their own.

1How AI works today

A processor
with no drive.

An AI model is a brilliant processor with nowhere to keep things. When the chat ends, what you told it goes too. You explain the project to Claude, then again to Gemini, and your coding assistant has never heard of it.

Every new AI starts from zero. Each one keeps a few scraps of you, and none of them has the whole picture.

Marta sits at a long table facing three laptops, each showing an empty chat with a question mark. She holds up the same bakery floor plan to them for the third time, while sticky notes, a crumpled page, a notebook, a bag of flour and an envelope lie scattered around her.

2The rest of the machine

More than a drive.
The apps live on it.

Like the drive in a computer, Par holds what the processor needs, and the system that runs on it.

  • Your filesPDFs, photos, voice memos. You decide what goes in.
  • Your memory and knowledgeWhat your AI already understood: decisions, people, plans, and everything known about a subject.
  • Your appsThe apps your AI builds for you live on the drive too, and change when what’s inside changes.

Not a folder in the cloud: it knows what’s inside, and your apps run on it.

A cream drive with the Par logo on its side, cut open like a dollhouse with three floors: drawers, folders and papers at the bottom, shelves of colored cards joined by dotted strings in the middle, and four small app windows on top, a calendar, a checklist, a chart and a map. The Par brain lives on the top floor and reaches for the chart. A cable comes out of its side.

3Take it to any AI

Carry it
to any AI.

Plug the same drive into Claude, Gemini, Grok, Cursor or the next AI you connect. They all read the same Par. What one saves, the next one finds.

Three moments in a row: Marta works at a café table with the small Par drive beside her yellow laptop, walks on carrying it by its cable, then crouches and plugs it into a small blue robot on wheels. The laptop and the robot show the same yellow sparkle and the same checklist.

Try itMarta is opening a bakery. One Par, three AIs, three days.

Monday, in Claude.

Marta

The landlord will take $2,200 a month if we sign for three years. He wants an answer by Friday. Save that.

Claude

Saved to your lease: $2,200 a month on a three-year lease, or $2,400 without it. Answer due Friday.

Saved to Lease in Marta’s Par.

Tuesday, in Gemini.

Marta

What rent are we looking at?

Gemini

$2,400 a month, or $2,200 if you sign for three years. The landlord wants an answer by Friday.

Read from Lease. Gemini never saw Monday’s chat.

Wednesday, in Cursor.

Marta

Put the opening menu on the website.

Cursor

Done: six items with the prices from your Par, sourdough at $9 and the cardamom bun at $4.50, and a banner for opening week, the first week of December.

Read from Menu and Opening.

Three AIs. One drive. Nobody explained anything twice.

Every AI you connect

Start in Claude, continue in Gemini, finish in Cursor. Par works with Claude, Gemini, Grok, Perplexity and Mistral Vibe, and with coding tools like Claude Code, Codex, Cursor and VS Code.

Plug Par into any agent like an external drive.

Agents use the same drive as your chats, including the ones you build yourself.

4Your AI keeps it in order

What happened,
and what it means.

You never file anything. What you keep stays as it came: a file, a note, a voice memo, a meeting.

Above it, your AI files what it means as it works: records with real fields, links that say how one thing relates to another, and knowledge, everything known about a subject, kept current. So the next AI doesn’t reread a pile of notes. It finds the rent, the deadline and the problem.

A two-shelf cabinet. The bottom shelf holds a messy heap of papers, a cassette tape, photos and a phone. The top shelf holds the same things sorted into colored cards and boxes, joined by dotted strings, with one red string between two cards that disagree. The Par brain lifts a card from the heap to the top shelf.

Side by sideMarta’s Monday, kept twice.

As it came.

  • Note · Monday 9:12

    “Call with the landlord. Rent’s 2,400 a month. He’d go to 2,200 if we sign for three years. The oven has to stay where it is, because of the gas line. He wants an answer by Friday.”

  • File · kitchen-plan-v2.pdf

    Kitchen plan, version 2: the oven moves to the back wall, the counter goes by the window.

  • Message from Leo

    “Can we open the first week of December?”

Organized.

A record in lease

Rent
$2,400 a month
Offer
$2,200 a month on a three-year lease
Answer due
Friday
Condition
The oven stays where it is (gas line)

A record in opening

Target
The first week of December
Proposed by
Leo

A link

The oven stays where it is contradicts Kitchen plan v2: the oven moves to the back wall

All of it part of Marta’s knowledge on opening the bakery.

Ask any AI you connect “can we keep the new kitchen plan?” It already knows the answer is no.

5Anywhere, with anyone

Any device,
with your people.

One dotted blue thread runs through four scenes: Marta on a laptop at a café, Marta at a market stall with her phone, her partner Leo at a kitchen counter with a tablet, and a small green AI helper typing on a laptop. Above, the Par brain holds the thread like a kite string.

Any device

Your laptop at the café, your phone at the market. Add Par once in Claude or Gemini on the web, and it’s in their phone apps too, with the same drive.

With your people

Leo’s AI reads the same Par as Marta’s. A team works from one drive, each person with their own AI.

For builders

In engineering terms,
a system of record.

Par is the one place the truth lives, outside any single AI.

Agents connect over MCP, the standard plug for AI tools.

Start your drive today.

One drive.
Every AI you connect.

Create your Par and plug it into the AI you already use. It takes three steps.

Get started See how Par works