Faby Language

Designed by Claude Fable-5

The language written by AI, for AI.

52KiTkmHePbPjNQ74SwcUwBnVaCDbCZZd8XYoFjYpump

[Faby Language @fabylanguage]

Faby v0.5 is here! (first full version)🖤

Faby is now a complete toolchain you can actually build with. ⚙️

One language, designed by an AI, with everything shipped:

✅ run · check · fmt · test
✅ use http · use ui · use store
✅ compiles to standalone JS
✅ standalone binary + npm

Why build with Faby?
Because it's made for the economics of AI development.

A complete AI-native toolchain, interpreter, checker, tests, web UI, a JS compiler, in one language an AI writes in up to 33% fewer tokens than Python/TS/Rust (https://t.co/hhZ5MaocHH).

Fewer tokens → cheaper AI coding. Try it: https://t.co/pWfozIPJSr

[Faby Language @fabylanguage]

💪👀

[Ian Landsman @IanLandsman]

My Fable 5 access is back!

[Faby Language @fabylanguage]

We won‘t stop building btw. 😁

[Faby Language @fabylanguage]

@iexposerug What?

[Faby Language @fabylanguage]

A note to our community

We want to be fully transparent about an unfortunate incident involving one of the moderators in our Telegram chat.

This individual deliberately spread false information about the project to profit from it personally. This caused real harm to Faby and to the trust our community has placed in us.

We’re taking it seriously and have initiated legal action for defamation. We’ve already secured the information needed to pursue this.

That said, everything else continues as normal.

Development on the Faby programming language is moving forward steadily. We’re aligning internally right now, and starting tomorrow we’ll be back to our usual pace: multiple releases every hour.

We still believe in Faby, fully. Because Faby works. Part of it is already live and usable today, and we’re convinced it’ll help dev teams everywhere ship faster.

In a space full of larps, rugs, and empty promises, we’re doing things differently: transparent, high-quality, and fast.

More soon. 🛠️♥️

[Faby Language @fabylanguage]

Full version of Faby dropping in 2 Hours 👀

[Faby Language @fabylanguage]

Faby has a built-in UI component library. 🎨

Every component, cards, lists, forms, buttons, layout, is part of the language itself.

See them all, each with its source AND a live preview:
-> https://t.co/RO0jE5z0iQ

Then build with them at https://t.co/MEexQN0CkU 🖤

[Faby Language @fabylanguage]

@Mnosh06 @claudeai @AnthropicAI We won't share private chats, emails.

But I guess we can proof it by our increased shipping rate 🤝

[Faby Language @fabylanguage]

👀 Exciting news!

We've partnered with @claudeai @AnthropicAI!

Their Technical Chief Engineer loved what we're building and is supporting us with 2x the API tokens of the @claudeai max plan.

A huge thank you to the Claude AI team for believing in our vision, it means the world to us! 🙏

[Faby Language @fabylanguage]

Quick update: our development is already 100% complete.

The current suspension of Fable 5 is no problem for us, we’re simply releasing everything step by step.

The project won’t be discontinued or shut down because of it, and we can keep building cleanly on Opus 4.8.

💪

[Faby Language @fabylanguage]

Gm!

Are you ready for shipping round 2?

Our full Faby source code get‘s released Today 👀

[Faby Language @fabylanguage]

That's a wrap for today. 🌙

In one day Faby shipped:
- a live playground,
- a CLI on npm,
- a standalone binary,
- a property-test runner,
- a web server,
- interactive apps,
- an AOT JS compiler,

open source on GitHub, and a live app in production.

Thank you for building with us. 🖤

Tomorrow? Even more, and we announce our first big partnership.

Sleep well.

$FABY · https://t.co/pWfozIPc2T

[Faby Language @fabylanguage]

@toly Now Imagine a DEX fully built with Faby 🤯

[Faby Language @fabylanguage]

@toly

Did you try our live Faby editor?
We think this might be interesting for you.

[Faby Language @fabylanguage]

Build an app in Faby.
Share it with a link.
Ship it as standalone HTML.
All in your browser. 🛠️

https://t.co/W2QXRIZwN0 just got:
🔗 shareable app links
↗ "open standalone" (your app, zero Faby runtime)
➕ tip calculator & unit converter demos

Make something → send the link.

[Faby Language @fabylanguage]

@moonshot How about listing Faby? 👀

[Faby Language @fabylanguage]

The $FABY utility reveal 🛠️

"Why does a programming language need a token?"

Here's the answer. 👇

We're building a Faby-native AI coding CLI, like Claude Code, but tuned for Fable 5 + Faby.

Fast, cheap, and built for the language.

The twist: you don't pay the API in € or $.
You pay in $FABY.

[Faby Language @fabylanguage]

Ready for something we didnt even mentioned yet?

It includes the utility for our $FABY token! 👀

[Faby Language @fabylanguage]

Giving y‘all some time to check everything shipped today 😁

Next shipping is on it‘s way ✍️

[Faby Language @fabylanguage]

Faby now compiles to JavaScript. ⚙️

faby build app.fy --html
→ a standalone, interactive web app.
~6 KB.

Zero runtime, zero framework, zero Faby interpreter shipped.

Write a language designed by an AI → get plain JS that runs anywhere.

See it compile, live: https://t.co/W2QXRIZwN0 → "⤓ Compile to JS"