Why it matters
- Runs a full Node.js environment inside the browser via WebContainers — no install, no local toolchain required.
- Supports nearly every major JavaScript framework, making it the most flexible AI app builder for JS developers.
- bolt.diy is fully open source and lets you swap in any LLM (Claude, GPT-4o, Gemini, Llama, Groq) with your own API keys.
- From prompt to running, editable app in under 60 seconds — real, modifiable code, not a screenshot or mockup.
Key capabilities
- Browser-native runtime: WebContainers runs a real Node.js process in the browser tab, including npm installs.
- Multi-framework support: React, Next.js, Vue, Svelte, Astro, Remix, Vite, vanilla JS/TS, and more.
- AI-driven code generation: Describe features in chat; Bolt writes, runs, and previews the code live.
- Live preview: See the running app side-by-side with the code editor as you iterate.
- Deploy to Netlify: One-click Netlify deploy directly from the Bolt.new interface.
- bolt.diy (open source): Self-host and plug in OpenAI, Anthropic, Groq, Ollama, or any OpenAI-compatible API.
- Code export: Download the full project zip or push to GitHub for continued development.
Technical notes
- Runtime: WebContainers (StackBlitz's browser-native Node.js) — no Docker or server VMs
- Supported LLMs (bolt.diy): OpenAI, Anthropic Claude, Google Gemini, Groq, Ollama, Mistral, xAI Grok
- Deploy target: Netlify (built-in); export for any other host
- Pricing: Free tier (daily token cap); Pro ~$20/mo; open source via bolt.diy (MIT license)
- GitHub: github.com/stackblitz-labs/bolt.diy — actively maintained with community contributions
- Founded: 2024 (Bolt.new launched by StackBlitz as a product around their WebContainers tech)
Ideal for
- Developers prototyping ideas quickly without spinning up a local dev environment.
- Teams evaluating AI code generation across different JavaScript frameworks.
- Power users who want full LLM flexibility via bolt.diy with their own API keys and self-hosted infra.
Not ideal for
- Backend-heavy apps requiring persistent databases or external APIs — best for frontend + light Node.js backends.
- Production deployments at scale — Bolt.new is optimized for prototyping, not ops.
- Non-JavaScript stacks (Python, Ruby, Go, Rust) — strictly the Node.js/npm ecosystem.
See also
- Lovable — AI app builder with deep Supabase integration for production apps.
- v0 by Vercel — Vercel's AI UI component generator for React and Next.js.
- Replit — Cloud IDE with AI that supports Python, Node.js, and many other languages.