Bolt.new

Bolt.new is StackBlitz's browser-based AI agent that generates, runs, and deploys full-stack web apps using WebContainer technology and Claude models. It is ideal for zero-setup prototyping and shipping apps without a local dev environment.

Bolt.new is StackBlitz's AI app builder built on WebContainers, a technology that runs a full Node.js development environment directly in the browser tab without any backend servers. That means Bolt can generate a React/Vite project, install dependencies, run the dev server, and show you a live preview instantly, all client-side, while an AI agent writes and edits the code in response to your prompts. The platform has grown into a broader stack: Bolt V2 introduced Bolt Cloud with built-in databases, authentication, file storage, edge functions, analytics, and hosting, letting you take a project from prompt to deployed app in one place. Anthropic's Claude models power code generation by default, and a 2026 Microsoft Azure partnership added enterprise procurement, M365 integration, and own-tenant deployment options. Bolt is metered by tokens rather than credits: the free tier includes a monthly token allotment with a daily cap, and paid plans raise the ceiling. It is a strong fit for developers who want an instant, zero-install environment and for non-technical builders who want a live, editable result, though token consumption on large apps can be a real cost consideration.