Built open source · Bring your own API key · Any model

Most AI tools help you
build faster. None of them
let you own the model.

Open Emergent is the open-source AI website builder. Describe what you need. We generate it — production-grade, instantly deployed, yours to keep.

to generate

Trusted by builders worldwide

Y Combinator
Product Hunt
TechCrunch
Forbes
Wired
The Verge
Fast Company
MIT Tech Review
VentureBeat
Hacker News
Y Combinator
Product Hunt
TechCrunch
Forbes
Wired
The Verge
Fast Company
MIT Tech Review
VentureBeat
Hacker News

The thinking.
The building.
The shipping.

Three capabilities. One system. Start anywhere — Emergent carries everything you already know into your next step.

Generate

From prompt to production in seconds.

Describe any website, app, or tool in plain English. Emergent returns a fully-functional, production-grade build. Ready to deploy, ready to extend.

Explore Generate

Edit

Iterate with natural language.

Chat with your app like you chat with a teammate. Request changes, add features, fix bugs — all without touching a line of code. Or drop into the editor if you want to.

Explore Edit

Deploy

Launch it. Own it. Forever.

One-click deploy to a live URL. Bring your own domain. Export the full source code — no lock-in, no black box. You own everything you build.

Explore Deploy

Pick your starting point.
Emergent connects the rest.

01

Describe what you want.

Type any idea, problem, or use case. Add a doc or link for extra context. No spec needed.

02

Emergent generates it.

A fully working, production-grade app is built in seconds. Not a prototype — a real app.

03

Preview and iterate.

See your app live in the editor. Chat to make changes. No re-explaining, no lost context.

04

Ship it. Own it.

One-click deploy. Export the source. Your domain. Your code. No lock-in, ever.

Open models. Your key.
Zero lock-in.

Connect your own OpenRouter, OpenAI, Anthropic, or Gemini API key. We never see it — it lives in your browser session only.

Start building free
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Fully open source.
Self-host if you want.

Fork it. Star it. Run it locally. MIT-licensed, built in public. Contributions welcome.

View on GitHub
Star on GitHub

Your code leaves with you.

We don't store your API keys or generated code on our servers. Export the full source anytime. You own everything.

🔒 HTTPS always🙈 No key storage📦 Export anytime

Builders love it.
Here's what they found.

Solo founders. Product teams. Sales leaders. All using Emergent to think, decide, and build — in one place.

A

Alex Chen

@alexchen_dev

"I shipped a full SaaS in one afternoon. Open Emergent just gets it — no prompting gymnastics, no babysitting."

P

Priya Shah

Founder, Nexora

"The ability to bring my own OpenRouter key and use the latest models is what sold me. Total control."

M

Marcus T.

@marcus_builds

"Cursor for builders who don't want to touch code. The editor is buttery smooth and the output is real production code."

L

Lena Koch

@lena_ux

"I've tried Lovable, Bolt, and Replit. Emergent outputs cleaner React code and the preview is instant."

J

Jordan Wei

Product, Stride

"Handed off a prompt in the morning, had a working MVP by lunch. My dev team was shocked."

A

Alex Chen

@alexchen_dev

"I shipped a full SaaS in one afternoon. Open Emergent just gets it — no prompting gymnastics, no babysitting."

P

Priya Shah

Founder, Nexora

"The ability to bring my own OpenRouter key and use the latest models is what sold me. Total control."

M

Marcus T.

@marcus_builds

"Cursor for builders who don't want to touch code. The editor is buttery smooth and the output is real production code."

L

Lena Koch

@lena_ux

"I've tried Lovable, Bolt, and Replit. Emergent outputs cleaner React code and the preview is instant."

J

Jordan Wei

Product, Stride

"Handed off a prompt in the morning, had a working MVP by lunch. My dev team was shocked."

R

Ravi Menon

@ravi_mn

"Open source + BYOK is the killer combo. I know exactly what's happening to my data."

S

Sophie Brandt

GTM Engineer

"The natural language editing is wild. I asked it to 'make the hero more dramatic' and it just... did it."

D

Dev Patel

@devbytes

"Export source code is not a gimmick here. The code is clean, typed, and ready for a real team."

C

Chiara V.

@chiara_v

"100x better than any no-code builder I've used. And I've tried all of them."

T

Tom Bailey

YC Alum

"We use Emergent for rapid prototyping. Stakeholder demos that used to take a week now take 20 minutes."

R

Ravi Menon

@ravi_mn

"Open source + BYOK is the killer combo. I know exactly what's happening to my data."

S

Sophie Brandt

GTM Engineer

"The natural language editing is wild. I asked it to 'make the hero more dramatic' and it just... did it."

D

Dev Patel

@devbytes

"Export source code is not a gimmick here. The code is clean, typed, and ready for a real team."

C

Chiara V.

@chiara_v

"100x better than any no-code builder I've used. And I've tried all of them."

T

Tom Bailey

YC Alum

"We use Emergent for rapid prototyping. Stakeholder demos that used to take a week now take 20 minutes."

Questions worth answering

Open Emergent is an open-source AI website and app builder. Describe what you want to build in plain English, and we generate a fully-functional, production-grade application — complete with source code you can export, own, and deploy anywhere.

The work is only as good
as the thinking before it.

You already know what you're trying to build. Type it. Emergent handles everything after that.