Today we're launching PromptUI — an AI app builder where you describe what you'd like to build and watch specialised AI agents collaborate to make it real, live, in under 60 seconds.
The Problem
Every existing "AI code generator" has the same limitation: one model, one prompt, one shot. The result is a promising first draft that falls apart the moment your requirements get even slightly complex. You end up re-prompting, context-pasting, and debugging for hours — often abandoning the project entirely.
The PromptUI Approach: A Multi-Agent Pipeline
PromptUI replaces the single-model loop with a LangGraph state machine of six specialised agents, each doing one job exceptionally well:
- Manager — Interprets your prompt, classifies the app type, and produces a structured task plan
- Developer — Writes all files to spec using your chosen AI model (Claude Sonnet 4.6 by default)
- Validator — Runs deterministic static analysis + AI-powered semantic review
- Fixer — Targeted repairs on flagged files, up to 3 attempts, without regenerating the whole project
- QA — Final holistic quality check before the build is marked complete
- Deployer — One-click deploy to Vercel directly from the dashboard
What You Get
- A live interactive preview inside your browser — no setup, no installs
- Full source code you own, exportable to GitHub in one click
- 11 AI models to choose from: Aurora (free), Grok 4.1, DeepSeek V3.2, Kimi K2.5, Claude Sonnet 4.6, Claude Opus 4.6, and more
- One-click Vercel deploy — your app gets a live .vercel.app URL
- Public share links so anyone can see and remix your work
- Inline code editor for manual tweaks after generation
Who Is It For?
Founders validating ideas fast. Product managers prototyping without engineering. Designers who want to see their concepts running. Indie hackers shipping in a weekend. Students building portfolio projects.
If you've ever thought "I'd build this myself if I could code faster" — PromptUI is for you.
Try It
PromptUI is live at promptui.co. Free tier includes 15 one-time credits and a 3 sessions/day cap — no credit card required. Build something and share it.