Bolt.new
StackBlitz's prompt-to-app builder running on WebContainers — full Node.js stack runs in your browser tab.
Bolt.new is StackBlitz's prompt-to-app builder running on WebContainers — full Node.js stack runs in your browser tab. Full Node.js runtime executes in-browser via WebContainers — no cloud sandbox latency.
About Bolt.new
Bolt.new is StackBlitz's prompt-to-app builder that runs a full Node.js stack inside your browser tab, on WebContainers.
Its trick is running everything in-browser: a full Node.js runtime via WebContainers with no cloud-sandbox latency, support for any npm package and stacks like Next.js, Astro, Remix, and Vite, and one-click deploy to Netlify.
It fits people who want to prompt an app and see it run instantly, without server setup. Two caveats: token-based pricing on paid tiers can burn credits quickly on large projects, and mobile-app generation is supported but less mature than web.
It's the in-browser, any-stack builder next to the opinionated v0 (Next.js) and Lovable (React + Supabase).
Sources: bolt.new, this listing
What it does well
- Full Node.js runtime executes in-browser via WebContainers — no cloud sandbox latency.
- Supports any npm package and arbitrary stacks (Next.js, Astro, Remix, Vite).
- One-click deploy to Netlify.
Where it falls short
- Token-based pricing on paid tiers can consume credits quickly on large projects.
- Mobile-app generation is supported but less mature than web.
Tagged
- Supports Claude
- Web-based
- Agentic Mode
- Beginner-friendly
- Freemium
Compared with similar things
Picked by shared tags inside the AI App Builders.
- 01Freemium →n8n
Open-source workflow automation with native LLM nodes — self-host on your own infrastructure.
- 02Freemium →HARPA AI
Hybrid agent + chat extension with website monitoring, summarisation, and natural-language automation.
- 03Freemium →HyperWrite
Writing assistant with workflows, an agent that can browse the web, and Chrome-extension drafting.
- 04Freemium →Zapier
Automation platform connecting 6,000+ apps, now with built-in AI actions and an agent builder.
- 05Freemium →Bardeen
No-code automation extension that runs AI-powered workflows across browser tabs and SaaS tools.
- 06Freemium →Claude
Anthropic's AI assistant with the Claude family of models (Opus, Sonnet, Haiku), Projects, and Computer Use.
Featured in
- 7 Best v0 Alternatives in 2026
The closest v0 alternative is Bolt.new — it generates and runs a full app in your browser on any framework, not just v0's Next.js + shadcn/ui. Lovable is the React + Supabase pick, Replit Agent builds and hosts in one workspace, and a0.dev targets native mobile. Every option here has a free tier.
- 7 Best Lovable Alternatives in 2026
The closest Lovable alternative is Bolt.new — it runs the same chat-to-app workflow on any framework instead of Lovable's fixed React + Supabase stack. v0 suits teams already on Next.js and Vercel, and Replit Agent builds from a phone. Every option here has a free tier.
Related reading
- What Is an AI Agent Harness? The Runtime That Turns an LLM Into an Agent
A harness is the runtime wrapper that turns a bare language model into an agent — the layer that runs tools, holds memory, assembles context, and enforces limits. The model does the reasoning; the harness does everything the model can't do on its own. It's the part that decides whether you shipped a chatbot or a real agent — and it's why the same model feels brilliant in one tool and useless in another.
Read guide → - Claude Code Memory
Claude Code has built-in memory — a CLAUDE.md file it reads each session — but it only holds short, hand-written notes. To make it understand a large codebase or docs set, you add a second brain: turn the repo into a knowledge graph, fold that into an Obsidian vault, and let the agent query the map instead of re-reading every file.
Read guide → - How to Do Your Own SEO with Claude Code
Claude Code can do most of your SEO — build a crawlable static site, write and optimize pages, fix the technical layer, even bottle the whole workflow into a reusable skill. What it can't do is invent authority or pick keywords, and if you let it generate 10,000 pages you'll get de-indexed, not ranked. Here's the honest, hands-on version for a maker whose site shipped last week.
Read guide →
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</a>Frequently asked questions
- What is Bolt.new?
- Bolt.new is StackBlitz's prompt-to-app builder running on WebContainers — full Node.js stack runs in your browser tab.
- Is Bolt.new free?
- Bolt.new offers a free tier and paid plans with higher limits or premium features.
- What platforms does Bolt.new support?
- Bolt.new runs on web.
- What category does Bolt.new belong to?
- Bolt.new is in the AI App Builders category — Natural-language-to-app platforms. Type a prompt, get a full-stack app with live preview and one-click deploy.
- What are the downsides of Bolt.new?
- Token-based pricing on paid tiers can consume credits quickly on large projects. Mobile-app generation is supported but less mature than web.