The AI Web Builder

Build websites and web apps at the speed of thought.

Describe what you want in plain English. NinjaAi builds it, shows you a live preview in seconds, and lets you refine it by simply asking for changes.

Try an example prompt or type your vision:
Active: v3
Live Preview

Nexus Analytics · Live Preview

Load time: 12ms

Monthly ARR

$124,500

+18.4%

Active Builders

3,842

+24.1%

Avg Build Time

480ms

-35%

Interactive & Data-Ready

Everything you see is real, working code you can edit and ship.

Live preview ready
Version saved
How It Works

How NinjaAi transforms ideas into deployed apps

From a single sentence to a live site: describe it, preview it, refine it, and publish when you are happy.

01

Prompt & Plan

Type what you want to build in plain English. NinjaAi understands your intent, plans the structure, and writes production-ready code.

Autonomous multi-agent planning
02

Instant Live Preview

Your app is built in moments and appears right away in a live preview you can click through and share.

Ready in seconds
03

Conversational Refinement

Ask for changes naturally: 'Make the hero darker', 'Add Stripe checkout', 'Optimize for mobile'. NinjaAi generates focused code diffs in real-time.

Iterative conversational diffs
04

Immutable Versioning & Rollback

Every successful build is saved as a version. Roll back to any previous version instantly, with no rebuild.

Instant 1-click rollback
Fast, Reliable Hosting

Previews and published sites load fast, anywhere in the world

Every version is saved safely, so you can experiment freely and always get back to one that worked.

Explore Plans & Tiers
Built For Real Builders

Everything you need to go from idea to production

Crafted for founders, product engineers, and designers who demand speed without sacrificing code quality or flexibility.

Clean, Readable Code

No proprietary wrappers. NinjaAi writes clean, modern code you can read, modify, and understand.

Production standard verified

Immutable Snapshots & Instant Rollback

Every build is saved as its own version. Jump between versions with a single click, without waiting for a rebuild.

Production standard verified

A Team of Specialized AI Agents

Multiple specialized AI agents collaborate on structure, styling, accessibility, and interactivity before your app is built.

Production standard verified

Zero Vendor Lock-In & Export

You own 100% of the code. Download your project's source or push commits directly to your GitHub repository.

Production standard verified

Fast Previews & Publishing

Previews and published sites load quickly for visitors around the world, with no hosting setup on your side.

Production standard verified

Mobile-Friendly by Default

Every generated app is responsive, with touch-friendly controls and support for installing on mobile devices.

Production standard verified
Transparent Pricing

Simple plans for every stage of building

Start for free, then scale as your web builder projects grow. No hidden fees.

Monthly billingAnnual billingSave 20%

Free

Perfect for testing ideas, prototyping interfaces, and personal experiments.

$0/ month

What's included:

  • 5 active projects
  • Standard AI generation queue
  • Instant live preview links
  • Up to 3 rollback snapshots per project
  • Full source code export (.zip)
  • Community Discord support
Most Popular

Pro

For active builders, freelance developers, and founders shipping real products.

$20/ month

What's included:

  • Unlimited active projects
  • Ultra-fast generation queue
  • Unlimited conversational refinements
  • Unlimited 1-click immutable rollbacks
  • Custom subdomain (yourname.preview.ninjai.app)
  • Direct Git sync & GitHub integration
  • Full source code export
  • Priority email & chat support
For Startups & Agencies

Team

Collaborative building with multi-seat workspaces, high concurrency, and custom domains.

$49/ month

What's included:

  • Everything in Pro
  • 5 team member seats included
  • High-concurrency builder slots (zero queue)
  • Shared team workspaces & role permissions
  • Custom production domain mapping & SSL
  • Audit logs & monthly usage rollups
  • Centralized billing & seat management
  • Dedicated onboarding & 24/7 priority support

Frequently Asked Questions

Everything you need to know about NinjaAi tiers and builder workflows.

Start Shipping Today

Turn your next idea into a live website in seconds.

No complex setup, no boilerplate. Just plain English, saved versions, and instant live previews.

No credit card required Instant live preview Full source code export