The problem with AI builders
Every AI website builder follows the same playbook: bundle the AI cost, mark it up, lock you into a subscription, and make exporting your own code an afterthought — or a paid upgrade.
You describe an app. They generate it. Then they charge you monthly to keep accessing it, as if the code belongs to them.
OpenThorn doesn't do that.
What OpenThorn is
OpenThorn is an AI web builder built around one idea: the code you generate should belong to you, and the AI cost should go directly to the provider — not through us.
Describe what you want in plain language. OpenThorn generates real, production-grade code, ready for you to customize and deploy anywhere. No drag-and-drop approximations. No locked editor. No wall between you and your work.
Bring your own keys — pay nothing to us
This is the core of how OpenThorn works.
You connect your own API keys — OpenAI, Anthropic, Gemini, or any provider you already use. OpenThorn passes your requests directly through. You pay the provider at their published rates, with zero markup on top.
No platform fee. No per-request cut. No subscription. What the model costs is what you pay — nothing more.
If you already have API credits, you can start building right now.
Your code lives in your infrastructure
When OpenThorn generates your app, the output is yours from the first line. Push it to your GitHub repo, deploy it to your own Vercel account, or host it anywhere you like. There is no OpenThorn lock-in — no proprietary format, no hosted-only runtime, no export paywall.
Watch the code appear in real time as the model writes it. It's production-grade output, not a template wrapper.
Start from a template
Not sure where to start? The template gallery has production-quality starting points for the most common project types — portfolios, SaaS apps, e-commerce storefronts. Pick one, preview it across desktop, tablet, and phone, then open it in the builder and take it from there.
These are real codebases you can ship, not demos locked behind a sign-up.
See what the community is building
The community page surfaces apps shared by other OpenThorn users. Browse by newest or most liked, search by project or author, and fork anything worth building on.
It's a useful way to see what's actually possible before you write your first prompt.
Try it
Bring your model keys and start building.