An honest comparison — sources linked below

Bolt builds it in a browser tab.
Kitty finds out if anyone wants it.

The short answer: Bolt.new is the most generous free AI app builder — 1M tokens/month free, $25/mo Pro from 10M tokens with rollover — and it will build whatever you prompt without asking whether the market exists. kitty.build starts at the other end: a free nine-board validation that researches the live web, cites its claims and returns a GO / PIVOT / NO-GO verdict, then builds the site, writes code into your GitHub repo and runs the venture daily. Prototype with Bolt; validate and operate with kitty.build.

Feature-by-feature comparison of kitty.build and Bolt.new
AreaKittyBolt.new
Checks demand before you build9 boards research the live market and return a cited verdict before any code exists.No validation step — it builds what you prompt.
What $0 gets you100 Treats, one full nine-board validation, no card.1M tokens/month, 300K/day — the most generous free tier among AI builders.
How failure is meteredFailed tasks are free: empty evidence means not done and not billed.Tokens are consumed by failed attempts and error loops.
Unused allowanceMonthly Treats with rollover rules on the paid plans.Unused Pro tokens roll over — genuinely fair metering.
Ships on your own domainCloudflare Pages on a domain you own, with your DNS and your registrar.One-click deploy, with Netlify integration for custom domains.
Runs the venture after launchDaily cycles: content, inbox, metrics, GTM, morning reports, all evidence-gated.Not offered — the app is the deliverable.
Complex, long-lived codebasesFeature work lands as reviewed commits in your GitHub repo.Strong for prototypes; quality drops on genuinely complex apps versus a full IDE workflow.

Prices and claims about Bolt.new were checked against the sources below on 2026-08-30: Bolt.new — pricing page · Bolt.new — product homepage. Pricing changes: the number on their own site wins over the number on ours. Product names are trademarks of their owners; these are independent comparisons.

What Bolt.new does well

  • The most generous free tier of any AI app builder here — 1M tokens/month without paying
  • Token rollover on Pro means an idle month is not money burnt
  • Nothing to install: the editor, the runtime and the deploy all live in the browser
  • Fast enough to be a genuine prototyping scratchpad, not just a first-draft tool

Where Bolt.new falls short

  • Tokens are consumed by failed attempts, so error loops are expensive
  • Output quality drops off on genuinely complex apps compared with a real IDE workflow
  • No validation, no market research, no launch or operations layer
  • Token accounting is harder to predict than a flat message or credit count

When Bolt.new is the better buy

If you want to prototype without paying anything, Bolt wins: 1M tokens a month free is the most generous allowance in this comparison, and rollover on Pro means you are not punished for a quiet month. For pure browser-based prototyping speed with zero setup, nothing here beats it — kitty.build is not trying to.

Our verdict on Bolt.new in 2026

Bolt.new is the best free way to find out whether an app idea is buildable, and the token rollover on Pro is the fairest metering in the builder category. What it does not do — like every builder here — is tell you whether the thing is worth building; it will happily burn 10M tokens on a product with no market. Use Bolt to answer "can this be built and how hard is it". Use kitty.build to answer "should it be", and then to keep the answer alive after launch with a site on your domain, code in your repo and daily operating cycles.

Bolt.new pricing

  • Free — $0: 1M tokens/month, 300K daily limit.
  • Pro — $25/mo: From 10M tokens/month, no daily cap, unused tokens roll over.
  • Teams — $30/member/mo: Pro allowances with team seats.
  • Enterprise — Custom: For large teams and high-volume usage.

Frequently asked

Is Bolt.new free?
Yes, meaningfully so: 1M tokens per month with a 300K daily limit, no card required. That is the most generous free allowance of any AI app builder in this comparison, and it is enough to build and deploy something small end to end.
Bolt.new vs Lovable — which is cheaper?
Both are $25/mo at the entry paid tier. Bolt is cheaper to try, because its free tier is 1M tokens a month against Lovable's 30 credits a month, and Bolt rolls unused tokens over. Lovable tends to produce better-looking output first time, which can mean fewer paid iterations.
Does Bolt.new validate startup ideas?
No. It is a builder and makes no claim to research markets or size demand. Pair it with a validation tool — ValidatorAI is free, Preuve is $29, DimeADozen is $129 — or use kitty.build, which validates free and then builds.
Do Bolt.new tokens roll over?
On the Pro plan, yes — unused tokens carry into the next month. The free tier's daily 300K limit does not roll over.
Should I switch from Bolt.new to kitty.build?
Only if the gap you keep hitting is the one kitty.build closes. kitty.build is the only tool in this set that both refuses to build a bad idea and builds the good one. Nine boards research the live web, cite what they find and return a GO / PIVOT / NO-GO verdict for free; if the verdict is GO, the same product ships the site on your domain, writes the code into your GitHub repo and runs daily cycles where a task only counts as done with evidence attached. The trade is that it is a subscription and it is opinionated. If you want a single document, or you want to art-direct every pixel yourself, something else on this list fits you better. Where Bolt.new still wins: If you want to prototype without paying anything, Bolt wins: 1M tokens a month free is the most generous allowance in this comparison, and rollover on Pro means you are not punished for a quiet month. For pure browser-based prototyping speed with zero setup, nothing here beats it — kitty.build is not trying to. The first kitty.build verdict is free with no card, so you can find out without cancelling anything.

Keep comparing

Or start at the full comparison index.

Get the verdict free. Decide after.

Nine boards, live research, every claim cited, GO / PIVOT / NO-GO — for $0. If it says NO-GO you just saved months and never paid us. If it says GO, Kitty starts building. Watch real ventures doing it on our live feed.

Start free — no card

No revenue share, ever · Failed tasks are free · Your repo, your domain, your data