Bolt

In-browser full-stack app builder by StackBlitz. Powered by WebContainers technology that runs Node.js entirely in the browser for instant, zero-latency development. Build and deploy complete web applications without leaving your browser tab.

Free AvailableBrowser IDEFull-StackOne-Click DeployStackBlitz

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Ricavo annuale ricorrente

$40M

Time to $40M ARR

6 months

Parent Company

StackBlitz

Fondata nel

2024

Frameworks Supported

Introduzione

Bolt is an in-browser full-stack app builder created by StackBlitz, the company behind WebContainers — the breakthrough technology that runs a full Node.js environment entirely inside your browser. This means there are no cloud VMs, no remote servers, and no network latency. When Bolt generates code, it executes instantly in your browser tab, providing the fastest feedback loop of any AI app builder.

The speed advantage is not just a technical novelty — it fundamentally changes the development experience. You see your app update in real time as the AI writes code. Hot module replacement means changes appear instantly in the preview panel. And because everything runs locally in your browser, your code never leaves your machine during development, adding an inherent privacy benefit.

Bolt appeals to sviluppatori who value speed and framework flexibility. Unlike competitors locked to a single stack, Bolt supports React, Next.js, Vue, Nuxt, Svelte, SvelteKit, Astro, and vanilla JavaScript. Its token-based pricing model gives users fine-grained cost control — you pay for AI interactions rather than fixed monthly message limits. From solo sviluppatori building side projects to agencies creating client prototypes, Bolt delivers the fastest path from idea to deployed app.

Pro

+Lightning-fast in-browser development powered by WebContainers — zero network latency
+Token-based pricing offers flexible pay-as-you-go cost control
+Broadest framework support among AI app builders (React, Vue, Svelte, Astro, etc.)
+One-click deployment from browser to production URL
+Full code ownership with GitHub export and ZIP download
+Real-time live preview with hot module replacement
+Code stays in browser during development for inherent privacy
+Built by StackBlitz — a mature, well-funded company with deep web infrastructure expertise

Contro

-Limited to JavaScript/TypeScript ecosystem — no Python, Go, or other languages
-Token consumption can be hard to predict for complex AI interactions
-Less suited for non-web application types (mobile, desktop, CLI)
-Piano gratuito tokens run out quickly for real project development
-No built-in database integrazione like Lovable has with Supabase
-Newer product with a smaller community compared to Replit or Lovable

Funzionalità principali

WebContainers In-Browser Runtime

Powered by StackBlitz WebContainers, Bolt runs a full Node.js environment in your browser. No cloud VM provisioning, no SSH connections, no latency — instant execution and feedback as you build.

AI App Generation

Describe your app in linguaggio naturale and Bolt generates the complete codebase. Supports React, Next.js, Vue, Nuxt, Svelte, SvelteKit, Astro, and other modern frameworks with intelligent framework selection based on requirements.

One-Click Deployment

Deploy your app to production with a single click. Bolt handles hosting, HTTPS, and provides a shareable production URL instantly. Export to Netlify, Vercel, or other platforms for custom deployment.

Token-Based Pricing

Pay for what you use with a token system. Each AI interaction consumes tokens based on complexity, giving you fine-grained cost control. No fixed monthly message limits — use tokens when you need them.

Real-Time Live Preview

See your app update live as the AI generates code. The preview panel shows the running application side-by-side with the editor di codice, powered by hot module replacement for instant visual feedback.

Full Code Access and Export

View, edit, and download the complete source code. Export to GitHub, download as ZIP, or deploy to external platforms. You own everything Bolt generates with no vendor lock-in.

Multi-Framework Support

Supports React, Next.js, Vue, Nuxt, Svelte, SvelteKit, Astro, Remix, and vanilla HTML/CSS/JS. Bolt recommends the best framework based on your requirements or lets you choose explicitly.

Iterative Chat Interface

Refine your app through conversation. Ask Bolt to add features, fix bugs, change styling, integrate APIs, or optimize performance. Each prompt builds on the existing codebase rather than starting from scratch.

npm Package Installation

Install any npm package during development. Bolt resolves dependencies, handles version conflicts, and installs packages in the basato sul browser Node.js environment without any cloud build steps.

Chi dovrebbe usarlo

Rapid Web App Prototyping

Go from idea to deployed prototype in minutes. Describe your web application and Bolt generates it with the framework of your choice. The instant in-browser feedback loop lets you iterate faster than any basato sul cloud alternative. Perfect for validating ideas before investing in full development.

Developers, designer, and product managers building proof-of-concepts

Client Demo and Presentation Builds

Agencies and freelancers can build interactive demos for client presentations in a fraction of the time. Choose the client-preferred framework, generate the app, customize the design, and deploy with a shareable URL — all during a single meeting.

Freelance sviluppatori, web agencies, and consulenti

Learning Modern Frameworks

Experiment with different JavaScript frameworks without setting up local development environments. Try building the same app in React, then Vue, then Svelte to compare approaches. Study the generated code to learn framework patterns and best practices.

Frontend sviluppatori learning new frameworks and junior sviluppatori

Hackathon Speed Building

When time is limited, Bolt provides the fastest path from idea to working app. The in-browser environment means no setup time, token-based pricing means no message limits during a sprint, and con un clic deployment gets your submission live instantly.

Hackathon participants and competitive programming teams

Piani tariffari

Free

Limited daily tokens
Basic AI generation
Community support
Public projects
WebContainers runtime

Consigliato

Pro

$20/mese

10M tokens per month
Illimitato projects
One-click deployment
Priorità AI generation
Private projects
GitHub export
All framework support

Team

$25/mese

Everything in Pro per member
Team collaboration features
Shared projects and modelli
Centralized billing
Supporto prioritario
Usage analytics

Confronto

Bolt vs Lovable

Both generate full-stack apps from linguaggio naturale, but Bolt focuses on developer speed and framework flexibility while Lovable focuses on accessibility for non-technical users. Bolt runs in-browser for instant feedback; Lovable uses cloud generation.

Bolt eccelle in

+In-browser WebContainers provide instant, zero-latency development
+Supports 8+ frameworks (React, Vue, Svelte, Astro, etc.) vs Lovable React only
+Token-based pricing offers more flexible cost control

Lovable eccelle in

+Lovable is more accessible for non-technical users with visual editing
+Lovable has native Supabase integrazione for database and auth
+Lovable has a larger user base and community

Bolt vs Replit

Bolt and Replit are both basato sul browser builders, but with different architectures. Bolt runs Node.js in the browser for speed; Replit runs containers in the cloud for language breadth. Bolt is faster for web apps; Replit supports more languages and mobile development.

Bolt eccelle in

+WebContainers eliminate network latency for faster development
+Token-based pricing can be more cost-effective for focused sessions
+Broader JavaScript framework support for web projects

Replit eccelle in

+Replit supports 50+ languages beyond JavaScript/TypeScript
+Replit offers app mobile development with React Native/Expo
+Replit provides a full IDE with terminal, debugger, and SSH access

1. Per Iniziare with Bolt

Visit bolt.new and sign up for an account. You will see a prompt box where you describe the app you want to build. Be specific about functionality, design preferences, and framework choice — for example: "Build a recipe sharing app with user accounts, image uploads, and a search feature using Next.js and Tailwind." Bolt generates the complete application and shows you a live preview alongside the code in seconds.

2. Iterating on Your App

Use the chat interface to request changes to your generated app. Send messages like "add a dark mode toggle," "integrate the Stripe payment API," or "fix the responsive layout on mobile." Each prompt refines the existing codebase rather than regenerating from scratch. Bolt shows you the changes in real time in the preview panel. You can undo changes if a prompt goes in the wrong direction.

3. Editing Code Directly

Click on any file in the code panel to view and edit it manually. Changes appear instantly in the live preview thanks to WebContainers hot module replacement. This hybrid approach lets you combine AI-assisted generation for big features with manual editing for messa a punto. Install npm packages by asking Bolt or by using the built-in terminal.

4. Deploying and Exporting

Click the Deploy button to publish your app to a production URL with HTTPS. For more control, export to GitHub for version control and continuous deployment through platforms like Vercel or Netlify. Download the complete source code as a ZIP file to continue development locally in any editor.

Domande frequenti

Bolt is built by StackBlitz using their WebContainers technology, which runs a full Node.js environment entirely in your browser. This means no cloud VMs, no remote servers, and no network latency — development happens instantly in your browser tab.

Each AI interaction (prompt, generation, edit) consumes tokens based on the complexity of the request. The Pro plan includes 10M tokens per month, which is sufficient for most projects. Unused tokens do not roll over to the next month.

Yes. You can download the full source code as a ZIP file, export directly to a GitHub repository, or deploy to external platforms like Vercel and Netlify. You own 100% of the generated code with no restrictions.

Bolt supports React, Next.js, Vue, Nuxt, Svelte, SvelteKit, Astro, Remix, and vanilla HTML/CSS/JavaScript. It can also generate projects with specific UI libraries like Tailwind CSS, shadcn/ui, and Material UI.

Yes, Bolt offers a piano gratuito with limited daily tokens. This is enough to try out the platform and build simple projects. The Pro plan at $20/month provides 10M tokens for more extensive development.

Bolt emphasizes speed via in-browser WebContainers and framework flexibility with token-based pricing. Lovable focuses on accessibility for non-sviluppatori with a visual editor and message-based pricing. Replit provides a full IDE with 50+ language support.

During development, code runs locally in your browser via WebContainers, so it does not leave your machine. AI prompts are sent to generate code, but the Pro plan includes private projects that are not publicly accessible.

Yes. Bolt can generate full-stack applications with backend APIs using frameworks like Next.js API routes, Express, or Fastify. It handles routing, middleware, database connections, and authentication logic.

Because WebContainers run Node.js in the browser, there is no cloud provisioning delay. Code changes appear in the live preview within milliseconds via hot module replacement. This is significantly faster than basato sul cloud alternatives.

The Team plan includes collaboration features for shared projects. For code-level collaboration, export to GitHub and use standard Git flusso di lavoros with your team.