Bolt.new

Bolt.new is StackBlitz's AI-powered full-stack web application builder that creates complete, deployable apps from a single text prompt — entirely in the browser. Unlike tools that generate code you then set up locally, Bolt runs a full Node.js environment in WebAssembly inside the browser, meaning the generated code executes, installs packages, and runs immediately without any local tooling.

The generation pipeline is impressive: describe an app and Bolt produces a working frontend (React, Svelte, or Vue), connects it to a backend API, wires up a database (via Supabase integration), and deploys it to a live URL through Netlify — all from one prompt. The iterative editing workflow lets you make changes by describing them in plain language, which the AI applies across multiple files simultaneously.

The main limitation is reliability on complex applications: intricate business logic, custom authentication flows, and multi-table database schemas often break between edits and require re-prompting to fix. Token costs accumulate quickly for large projects. Bolt is best suited for MVPs, demo prototypes, landing pages, and internal tools where speed matters more than perfect code quality. For teams comfortable with code review, the generated output is a strong starting point that saves hours of boilerplate work.