Bolt.new

Bolt.new is a browser-based AI app builder that generates, runs and deploys full-stack web apps from prompts — no setup, no local environment.

Overview

Bolt.new (by StackBlitz, powered by WebContainers) lets you describe an app in chat and watch it build in a live, running environment in your browser. The agent writes code, installs packages, runs dev servers and fixes errors interactively, and one click deploys to production (via Netlify). Because the entire Node environment runs in the browser tab, there is nothing to install and sharing a project is just a link. It became one of the breakout hits of the AI app-builder wave, especially for prototyping MVPs and internal tools.

Makers describe their app, watch it scaffold and run live in the browser tab, and iterate conversationally — asking for features, fixes and styling changes while the dev server runs. GitHub sync keeps code versioned, and one-click deploy publishes the result publicly. Because the environment is WebContainers-based, sharing work is as simple as sending a link, and every project can be ejected to a normal repository anytime.

Key Features

• Prompt-to-full-stack-app generation with live running preview
• Agentic debugging: the AI runs code and fixes its own errors
• WebContainers-powered in-browser Node environment
• One-click deployment to production hosting
• GitHub import/export and full code ownership
• Framework support for React, Vue, Svelte, Astro and more
• Live in-browser dev server during AI iteration
• GitHub sync with full code export and ownership

Pricing

Bolt.new is freemium: free daily token allowances let you build for free, while paid subscriptions (tiered by monthly tokens) support larger apps, faster queues and premium features.

Who Is It For

It targets founders, designers, makers and developers who want working web apps and prototypes fast, especially MVPs and demos.

A founder describes a marketplace idea, watches a full-stack app scaffold and run in the browser, and iterates conversationally until the demo works. GitHub sync versions everything, one click deploys publicly, and the code exports cleanly when the project outgrows the tool. Prototypes that once took weeks arrive in evenings.

FAQ

Is Bolt.new free to use?

Yes, with daily free token limits; heavier builds consume paid token subscriptions.

Does Bolt.new offer an API?

Bolt.new is an interactive builder; programmatic access is limited, though projects export to standard code.

How does Bolt.new compare to alternatives?

Compared with Lovable, v0 or Replit Agent, Bolt.new stands out for in-browser execution and quick iteration; token costs can rise on complex debugging sessions.

Which frameworks does Bolt.new support?

Bolt.new supports popular web frameworks including React, Vue, Svelte, Astro and Next.js, with package installs handled inside its in-browser Node environment.