Bolt.new (StackBlitz)

Bolt.new delivers on the "prompt a full-stack app in the browser" promise better than most competitors. But token burn is high and the output has a ceiling that arrives faster than the marketing suggests.

Bolt.new (StackBlitz's AI-native editor) is the most complete "describe your app, get a working app" experience. The in-browser WebContainer architecture means there's no setup — you get Node.js, npm, and a running dev server in the tab within seconds — and the AI writes code that actually runs. Integration with Supabase, Netlify, and Stripe makes the "working app" story real, not just a frontend mock.

For non-engineers and prototypers, Bolt is genuinely empowering. You can go from idea to deployed prototype in an afternoon, and the iteration loop feels closer to a creative tool than a programming environment. Pricing starts at $20/mo for Pro and scales with token usage — the developer-friendly variant of pay-per-prompt.

The weaknesses get called out quickly in practice. First, token burn: complex apps blow through the monthly allotment fast, and teams serious about Bolt end up on Teams tiers ($30+/user/month) or the Scale tier. Second, code quality varies — generated code runs, but architecture is often ad-hoc, and debugging a 2,000-line app the AI wrote is less fun than it sounds. Third, the WebContainer environment has real limitations (no Docker, no native binaries, some packages don't work), which you discover at inconvenient moments.

Evaluate Bolt for prototyping, hackathons, and non-engineer builders. Don't use it to build production apps that will outlive the prototyping phase — migrate working Bolt output to a proper environment once the idea is validated.