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Bolt.new

Full-stack app generation in the browser — zero install, any framework

Code / DevToolsFreemiumOpen source

Bolt.new by StackBlitz generates and runs full-stack web apps directly in the browser using WebContainers. Prompt, edit, and deploy React, Next.js, Vue, Svelte, and more without installing anything locally. The open source bolt.diy lets you self-host with any LLM.

Key specs
20,081 GitHub stars (bolt.diy) source
as of 2026-11-12

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What we know

PricingFreemiumfrom our original listing, not yet re-checked
GitHub stars19,000from our original listing, not yet re-checked

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, 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.

FAQ

What is Bolt.new?

Bolt.new is an AI-powered full-stack development environment that runs entirely in the browser. Built by StackBlitz using WebContainers technology, it lets you describe an app in plain language and get runnable code immediately — no local Node.js or npm install needed.

Is Bolt.new free?

Bolt.new has a free tier with limited daily tokens. Paid plans (Pro, Teams) unlock higher usage. There's also bolt.diy, an open source self-hostable version that lets you bring your own API keys (OpenAI, Anthropic, Groq, Ollama, etc.).

What tech stacks does Bolt.new support?

Bolt.new supports React, Next.js, Vue, Svelte, Astro, Remix, Vite, and vanilla JavaScript/TypeScript. It runs Node.js via WebContainers so nearly any npm package works in the browser.

How does Bolt.new compare to Lovable?

Bolt.new excels at instant browser-based prototypes across many frameworks with no install. Lovable focuses on production apps with integrated Supabase backend. bolt.diy lets you self-host and use any LLM; Lovable is cloud-only. For quick multi-framework experiments, Bolt.new is faster to start.

Alternatives

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Listed 2026-02-22 · updated 2026-11-12