Pressure-test a startup idea with Claude, GPT and Gemini
To pressure-test a startup idea with AI, put it in front of several models from different labs and give each one a job: one checks the market and the numbers, one makes the strongest case against it, and one drives the discussion to a clear next step. In Bordet that is the Decision Room: the three answer in one thread, and with a free account a Chair card shows where they agree and where they do not.
Updated 17 October 2026
What each seat checks
The Decision Room seats three members, each from a different lab, so the views are formed separately.
- Analyst (GPT): the market and the numbers. Who pays, how many of them there are, what a customer is worth and what it costs to win one.
- Advocate (Gemini): the strongest case against. The assumption the whole idea rests on, and the story of how it fails a year from now.
- Facilitator (Claude): the decision. Where the other two agree, what is still open, and the smallest test that would settle it.
How to run it
Write the idea in a few lines: what it is, who pays, roughly what they pay, and what you already know. Paste anything longer (notes, a deck, survey results) as a source, and the whole table reads it.
Send it to the whole table. Each member answers on its own first, then replies to the others where it disagrees. With a free account, the Chair card then sums up what they agree on, where each one differs, what would change their minds, and one next step. Push back on any of them by name, and confirm what you decide so it goes into the decisions log.
Come back after you run the test. The room keeps the idea, the objections and what you decided, so the second round starts from the evidence, not from the beginning.
What it can and cannot tell you
Several models will find the weak assumption faster than one, and they are good at turning a vague worry into a test you can run this week. They cannot tell you whether customers will pay; only customers can. Treat the room's verdict as a list of what to check, not as the answer.
A short example
You
Pressure-test this idea: renting refurbished office chairs to companies with remote staff, $15 a chair a month, the company pays.
Analyst · GPT
A refurbished chair costs you about $180 delivered, so one pays back in 12 months before repairs and collection. The idea works if a chair stays rented for two years or more. Staff turnover is the number that decides it.
Advocate · Gemini
The strongest case against: most companies already give remote staff a one-off home-office allowance. You are asking a finance team to swap a one-off cost they understand for a monthly one.
Facilitator · Claude
So the numbers need long rentals and the risk is who buys. Smallest test: a one-page offer to ten companies with remote teams. If two sign before you buy any stock, run the turnover numbers on those two.
An illustrative exchange, shortened. Real answers are longer and the members reply to each other.
Open a Decision Room
Opens a new Decision Room with "Pressure-test this idea:" in the message box. Finish the sentence and send it to the whole table. Free to try, no card.
At the table: Analyst, Advocate, Facilitator.
How Bordet works explains what happens in one turn, and Bordet vs Council AI compares it with the tool you may already use.
Questions
How do I validate a startup idea with AI?+
Give several AI models a job each: one checks the market and the numbers, one argues against the idea, one turns the discussion into a next step. Compare where they disagree, then run the smallest test that would settle it with real customers.
Can AI tell me if my startup idea is good?+
Not on its own. It can find the assumption everything rests on, check your arithmetic and suggest a cheap test. Whether people will pay is something only customers can tell you.
Why use several AI models instead of one?+
One model asked twice mostly repeats itself. Models from different labs form their views separately, so where they disagree is where your idea needs evidence.
What should I give the room?+
A few lines on the idea, who pays and roughly how much, plus anything you already know. Longer material (notes, a deck, survey results) can be added as a source that every member reads.
Is it free?+
You can try it free without an account, and a free account comes with $1.50 of credit. After that you buy prepaid credits from $5, or use your own API keys.