brink. — a K–12 AI learning coach, in pilot

01 — The idea

Brink. Not your shortcut.

A K–12 learning coach engineered to do the opposite of what you'd expect from a chatbot.

The trade with most AI is fast. You ask, it solves, you submit, you move on. The grade goes up. The understanding doesn't.

brink. is engineered around a single constraint — never give the answer to the question you're working on. Ask it to solve 3x + 5 = 20 and it won't. It'll ask what 3x means. It'll follow what you say next. When you hit a rung that's missing, it fills one sentence — the smallest fact you need — then hands the reasoning back to you.

brink.

"What do you think 3x means?" → you reason → "Now what happens if you subtract 5 from both sides?"

Typical AI chatbot

"3x + 5 = 20. Subtract 5: 3x = 15. Divide by 3: x = 5."

The constraint is the feature. It's what makes the work yours.

02 — What to expect

How a session feels

It asks more than it tells. Questions are the default. If brink. gives you a fact, it's because a prerequisite was genuinely missing.

It follows you, not a curriculum. A shaky step means you go back. A solid one means you build higher. The path is different every time.

It won't praise you generically. No "great job." When a session ends well, it names exactly what you figured out.

It won't finish your work. Not a sentence of your essay. Not a step of your proof. That's the line.

03 — Pilot privacy

You choose what gets shared

brink. is live in private pilot while we learn where students get stuck, where the coaching lands, and where it needs to get sharper. Nothing in your conversation leaves your screen unless you choose to send it.

At the end of a session, you'll see a Share with brink. button. Tap it and a preview shows exactly what would be sent — your grade level, any assignment context you entered, and the exchanges from the conversation. If it looks right, you can share. If not, close the dialog and nothing goes anywhere.

Shared sessions help the Prompt-Ed team refine how brink. asks, scaffolds, and releases. We will never sell them, share them publicly, or train AI on them. Full privacy details →

04 — Who it's for

Students, parents, teachers, anyone

Students working through a problem on their own. Parents sitting beside them. Teachers piloting it in a unit. Anyone who wants to use AI to get better at something — not to get around it.