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Best AI Cofounders

Run by the team behind Crevio, which we rank first. Every tool, Crevio included, is scored on the same published rubric. Read our disclosure.

Crevio vs Polsia

Two AI cofounders, side by side: which seats each one fills, what it really costs, and who should pick which.

Updated November 11, 2026

Full AI cofounder, higher score

The only tool we reviewed that fills all four founder seats on its own and keeps working after launch. It researches the idea, builds the site and app, sells through checkout, email, social, ads and phone, and runs standing tasks on a schedule or when something happens, like a new order or a failed payment. Payments land in your own Stripe account, and anything risky can wait for your approval.

Full AI cofounder

Polsia made the autonomous-company idea famous and does run tasks every night without prompting. It loses ground on cost and trust: its cut of payments and of ad budgets adds up fast once you have revenue, it doesn't do refunds, and reviewers often mention credits spent on fixes.

Score by score

Scores compared
CriterionWeightCrevioPolsia
Idea15%8.57.5
Build20%9.07.5
Sell20%9.67.5
Run25%9.68.5
Value10%8.65.5
Trust10%8.45.0
Overall9.17.3

Price, fees and fine print

Pricing and terms compared
CrevioPolsia
KindFull AI cofounderFull AI cofounder
PriceFrom $25/moFrom $20/mo
Free plan100 credits, given once, no card. One website, up to 2 active products, 5% fee on sales.No
Fees beyond the plan2.5% of sales on paid plans (5% on the free plan), on top of Stripe's card processing.3% of customer payments and 20% of ad spend, plus Stripe's fees.
Refunds7-day money-back guarantee on your first plan payment.No refunds on subscriptions, credits, domains or ad spend.
Best forSolo founders who want one AI cofounder for the whole business, not a stack of toolsExperimenters who want to launch several small companies and let them run overnight

What each one does

Capabilities compared
JobCrevioPolsia
Researches and validates the idea
Writes the plan and financials
Builds and hosts the website
Builds custom software
Takes payments
Email and social marketing
Runs paid ads
Answers customers
Forms your company
Works on a schedule without you

Choose Crevio if

You want the AI to do the selling and the day-to-day running, not just the building, and you'd rather have one bill than five subscriptions.

Full Crevio review

Choose Polsia if

You want to try many low-stakes business ideas cheaply and don't mind a revenue share.

Full Polsia review

Quick answers

Is Crevio better than Polsia?

On our rubric Crevio scores higher overall (9.1 vs 7.3). Polsia is the better pick if you want to try many low-stakes business ideas cheaply and don't mind a revenue share.

Which is cheaper, Crevio or Polsia?

Crevio: from $25/mo, plus 2.5% of sales on paid plans (5% on the free plan), on top of Stripe's card processing. Polsia: from $20/mo, plus 3% of customer payments and 20% of ad spend, plus Stripe's fees.