Simulations

Show it to a roombefore the world sees it.

An ad, a page, a price, a cold email, an idea. A room of synthetic customers with real biases reads it, each one alone, and you get keep, fix or kill with the reasons. Below, eight of our own runs, replayed.

What goes in

Anything a strangerwould read before paying.

Each type gets read the way it's met in the wild: a subject line in an inbox, a listing in a search, a price on a page. These are the real calls the room made.

Our own test runs. Room sizes as run, from 10 to 50 personas. The call is the product's own.

Who's in the room

Cast from the marketyou actually sell to.

Point Kranth at your site and it reads who you sell to, then seats a room from that market: their jobs, their budgets, their cities. Tap anyone to hear what they said.

Our ad, handed to the room“Stress-test your ads on 200 hostile customers before you spend a dollar.”

Each one alone

Built one by one.Read alone. Then counted.

Every seat gets an archetype, a voice and a way of deciding, then reads your thing in its own call, with no idea what the others said. Only then does the room get counted.

  1. 01You drop it in

    An ad, a page, a price, an email or an idea. Text or image. Two versions if you want a winner.

  2. 02The room is assembled

    Each seat is built from one of 101 archetypes, 9 voice axes and 8 decision traits, then placed in a city your buyers live in.

  3. 03Everyone reads it alone

    No groupthink. Each persona reads your work in its own call, without seeing the others. A room can mix models from different labs.

  4. 04You get the split

    Hostile, neutral and aligned, the objections they share, and which version wins. Then take it to a debate, an interview or recon.

Variant A · our adStress-test your ads on 200 hostile customers before you spend a dollar.
Not a poll of real people.

These are synthetic personas. Treat the room as a rehearsal, then go talk to customers.

Not a forecast.

It won't tell you your conversion rate. It tells you where strangers push back, and why.

Not a yes-machine.

Seats are built to disagree. Our own pricing call scored 14.

A against B

Same room.Two versions. One winner.

Give it two versions and the same people read both. This is our own homepage line against the jargon we could have written instead. Watch who changes their mind.

The verdict

Keep, fix or kill.And exactly why.

Every run ends in a call, the split behind it, the objections the room shares and the words they used. This one is public: a hundred people read a dating app with no chat.

Your turn

The room is seated.Bring it the thing.

10 free credits when you sign up, no card. Your first room reads it in a few minutes.