Bolt
By StackBlitz
new) is an AI-powered, browser-based app builder from StackBlitz that generates and runs full-stack web applications directly from natural-language prompts.
Definition
Bolt (Bolt.new) is an AI-powered, browser-based app builder from StackBlitz that generates and runs full-stack web applications directly from natural-language prompts.
Overview
Bolt is built on StackBlitz's WebContainers technology, which runs a full Node.js environment directly inside the browser, so generated applications can install dependencies, run a dev server, and preview changes without any local setup. A user describes what they want in plain language, an AI model generates or edits the underlying code — commonly using frameworks like React or Next.js — and the result runs live in the browser for immediate iteration, with one-click deployment integrations to platforms like Vercel. Bolt launched in 2024 as part of a broader wave of AI-assisted "vibe coding" app builders, alongside tools like Cursor and other AI coding assistants, that let people generate and modify working software conversationally rather than writing every line by hand. The practice of balancing speed against control when building this way is explored in Vibe Coding: How to Build Faster with AI Without Losing Control.
Key Features
- Natural-language-to-full-stack-app generation
- In-browser Node.js execution via WebContainers
- Live preview with instant code edits
- One-click deployment integrations
- Support for popular frameworks like React and Next.js
- AI-driven iterative debugging and refinement
- No local development environment setup required