Fylun Builder
Describe it. Deploy it.
Fylun Builder turns a description into a working AI application — a real deployable app with its own pages, assistant, and knowledge base, not a prompt behind an iframe. Build in the browser, then download the code, host it free on Fylun, or deploy it to your own server.
FREE TIER — NO CREDIT CARD · ONE WALLET, EVERY SURFACE
Yours to run, anywhere.
Builder apps aren't trapped behind the tool that made them — three deploy paths, no lock-in.
Download the code
Export the whole project and run it on anything that serves a web app. It’s your codebase.
project-export.zipHost free on Fylun
One click to a live URL on Fylun’s infrastructure — share it, embed it, iterate on it.
yourapp.fylun.appDeploy to your server
Push the full app to infrastructure you own, with the assistant still billed through your Fylun wallet.
deploy → your VPSWhat's inside.
Describe → application
Tell Builder what the app should do and it generates the real thing — pages, an assistant wired to your instructions, and a working preview you can iterate on in place.
Knowledge bases
Upload documents and the app's assistant answers from them — retrieval is built in, not a separate vector-database project.
Three ways to ship
Download the code and own it, host it free on Fylun's infrastructure, or deploy to your own server — the app isn't locked to the builder that made it.
Embed anywhere
Drop the app's assistant into an existing site with an embed snippet — same app, your domain.
Every model available
Apps run on the same 50+ model catalog as the rest of Fylun — pick per app, change without rebuilding.
Project workspace
Files, snapshots, and version history per project — experiments don't overwrite the app that works.
What it retires.
Replaces a starter repo, a vector database, an API-key drawer, and a deploy pipeline for every small AI app you want to ship.
Common questions.
Do I need to know how to code?
No — describing the app is enough to get a working one. If you do code, you can edit the generated files directly and export the whole project.
Where do Builder apps run?
Three options: download the code and run it anywhere, host it free on Fylun, or deploy to your own server. There's no lock-in to Fylun's hosting.
Can the app answer questions from my documents?
Yes — upload documents to the project's knowledge base and the app's assistant retrieves from them when answering.
How is usage billed?
The app's AI usage draws from your Fylun credit wallet at the same transparent rates as every other surface — no separate API keys or provider accounts.
The rest of the suite.
Workspace
Productivity suiteThe office suite that thinks.
Studio
Media generation suiteImage, video, audio — one canvas.
Chat
Multi-model chatEvery model. One thread.
Search
Grounded web answersSearch that ends in an answer.
Files
One libraryEverything you make, in one place.
Automation
Workflow automationWorkflows that think.