Bolt.new
Build complete web apps and sites with AI in your browser, nothing to install
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What is Bolt.new?
Bolt.new is an AI-powered web app builder that lets you create full websites, apps and prototypes using natural language prompts. Built by StackBlitz, it runs real code in your browser using WebContainers, so you can develop, edit and deploy full-stack applications with no local setup. Perfect for founders, designers and developers who need to go from idea to working product fast.
Pros
- All-in-one interface: code, preview, terminal and versions built in, without leaving the browser
- WebContainers in the browser: runs native Node.js in the browser, no cloud VMs or local install
- Open source: repository available on GitHub for self-hosting via bolt.diy
- Multi-framework support: React, Vue, Svelte, Next.js, Astro and more JavaScript frameworks
Cons
- English-only interface: documentation, help centre and support are entirely in English
- Unpredictable token usage: complex projects burn through billions of tokens quickly
- Limited context: loses the thread on apps with 15-20+ components, needs manual refactoring
What Bolt.new is like in practice
Where it stands out
It builds a complete application from a description and runs it in the browser immediately, with the whole project — not just a component — and an option to deploy. For validating an idea or showing a working prototype the same day, it removes all the setup work that usually eats the first week.
Where it falls short
What it generates is a starting point, not a product: the architecture is the tool's choice and growing on top of it means rebuilding parts. Like every app generator, it skips the boring critical work — permissions, validation, edge cases — which is exactly where things break in production.
How its pricing works
It runs on tokens with a free daily allowance, and that is the point to watch: iterating on an application consumes far more than it looks because every change resends project context. Start on the small plan and measure before upgrading, because real consumption almost always surprises.
Is Bolt.new right for you?
Yes, if…
You want to build a web prototype with nothing to install: it runs Node.js inside the browser, with code, terminal and preview on the same screen. And its repository is open if you want to self-host.
No, if…
You are building something large: it loses the thread past 15-20 components and token consumption spikes without warning. There is nothing in Spanish either.
Frequently asked questions
Can I write prompts in Spanish?
Yes, the underlying Claude model is multilingual and understands Spanish. But the Bolt interface itself is still English.
What are tokens?
They are the unit of usage in Bolt. The free plan gives 1M tokens/month; every prompt and run consumes tokens depending on complexity.
Can I export my code?
Yes, download it as a ZIP or connect directly to GitHub for version control and deployment.
Where Bolt.new appears
Rankings where we have picked this tool.