Bolt.new

Bolt.new takes a prompt and scaffolds a full web app (typically a JavaScript or TypeScript stack) that runs immediately in an in-browser terminal, thanks to StackBlitz’s WebContainers technology, so there’s no waiting on a remote build server between a prompt and seeing the result. You can keep chatting to refine the app or open the file tree and edit code directly, since the whole project is a real, inspectable codebase from the first prompt.

Pricing is token or credit-based tied to AI usage, with a free tier for trying it out before committing to a paid plan. Projects can be exported to GitHub or downloaded as a real project folder, which puts Bolt.new in the more portable camp of this category rather than the closed, hosted-only builders. The ceiling is the same one most AI builders share, complex, multi-screen apps with intricate business logic take more iterative prompting and manual code cleanup than the demo videos suggest. It fits developers and technical founders who want to prototype fast in a real codebase without setting up a local dev environment first.