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NewBring your Claude Code or Codex subscription

Design. Build. Ship.

Design and build straight away in real code. Bring your Claude Code or Codex subscription and ship what you draw — no rebuild, no handoff.

Start freeFree to start · No credit card required
Your command center

The AI-first command center for product design.

Multiple agents. Live previews. Real code. A canvas where you draw, describe, and ship — all in one place. Built around one idea: the prototype is the product.

01
Build a checkout flow
claude-sonnet-4-5↵ to send

Just describe it.

Type what you want. The canvas understands. Real components appear — not approximations.

02
main
banana-builder
shape-maker

Agents that show up.

Watch them work in real time. Multiple agents on the same canvas. Total clarity.

03
Button
App.tsx
<Button variant="primary">
Create account
</Button>

Design and code, fused.

Edit the canvas, the code changes. Edit the code, the canvas changes. Same artifact, always.

04
Model
byok
Unlimited generation · no per-token charges

Your AI. Your pricing.

Plug in Claude Code, Codex, or Cursor. Unlimited generation through a plan you already pay for.

05
preview
Sign up to Loop
Create your account in seconds.
you@example.com
••••••••
Create account

Always running.

Every change compiles in the browser. No build step. What you see is what ships.

06
Pen

Or just sketch it.

Sometimes a pen is faster than a sentence. Draw shapes, sketch flows, scribble notes — straight onto the canvas, alongside the agents.

The workspace

Brainstorm. Design. Prototype. Code. Preview. Ship.

Code Generation
Production-ready React
Design System
Your tokens, your rules
AI Agents
Multi-turn reasoning
Live Preview
Instant feedback loop
Components
50+ ready to use
CLI & SDK
Build your way
Share & Deploy
One-click publishing
Integrations
Works with your stack
The community

10,000+

designers, founders, and product teams already shipping with Prototyper.

Pricing

Free to start. Pay when you ship.

Starter
Value
$25.00/month
Billed monthly
The perfect plan to get started
  • Core prototyping workspace
  • Public share links
  • Email support
Pro
Popular
$59.00/month
Billed monthly
The perfect plan for professionals
  • Everything in Starter
  • Unlimited projects
  • Realtime collaboration
  • Version history
  • Priority support
Enterprise
On request
Billed monthly
The perfect plan for enterprises
  • Everything in Pro
  • SSO/SAML
  • Advanced roles and permissions
  • Audit logs
  • Custom security reviews
  • Onboarding and training
  • Uptime SLA and dedicated support

Your next project starts here

Stop staring at a blank editor. Describe what you want, and start building in seconds.