Jev Case Library: Real Jev Builds, Demos and Projects

A living library of 1173 real Jev cases — every project, demo and benchmark posted publicly by the builders using Jev, TypeSafe AI's System One decision model. Original posts, videos, metrics and an English translation wherever the original is not in English, collected in a single searchable place.

1173Jev cases

968builders

70.4Mviews on X

215.1Klikes

11languages

Browse by use case

🎮Games & playable demos69 cases 🧱Websites & web apps26 cases 🤖Agents & workflows154 cases 🛠️Coding & developer tools284 cases 🗂️Classification & data extraction128 cases 🌐Browser & computer use62 cases 🎬Video, animation & media79 cases 📈Sales, ads & marketing32 cases 💹Finance & trading26 cases 🎧Support & operations36 cases

Most watched Jev cases

All cases →

Jev case: After co-inventing ChatGPT, I kept asking myself

@CompleteSkepticSep 15, 202634.6M views

found the perfect use case for @typesafeai Jev: instant

@tamarajtranSep 17, 20262.7M views

Agents

Breaking: Browser Use + Jev = Ultrafast Findings flights

@gregpr07Sep 17, 20262.5M views

AgentsBrowser agents

The gains aren’t free: Jev can't generate text Comparing

@CompleteSkepticSep 15, 20262M views

Dev toolsClassification

Here's a 45-second TL;DR on Jev.

@MatijaSosicSep 16, 20261.4M views

Video & media

Jev is now available to everyone.

@typesafeaiSep 20, 20261.1M views

Newest Jev cases

Browse the full library →

First look at the original post and the related discussion

@bytelee_tradeSep 21, 202611 views

time to build smthng with jev thanks @typesafeai :))

@kanaktwtsSep 21, 202669 views

Just played around with @typesafeai, and the result was

@Leo_Web3_BTCSep 21, 202627 views

I was curious about how Jev differs from conventional LLMs

@Mx_IssueSep 21, 202639 views

Jev sorted 9,999 Pirate Nation PFPs and it did it in ~25

@JDHyperSep 21, 2026218 views

Games

Mac Version of Clairvoyance now has Jev support if you have

@draginolSep 21, 2026182 views

Dev toolsSupport & ops

If this is the first time you hear about Jev, remember the

@SAldwaisSep 21, 2026112 views

Jev case: Sorry, @typeform , if I call you @typesafeai !

@CarolMonroeSep 21, 202676 views

Jev case: My favorite piece of the agent stack can't write

@Entropy_BadgerSep 21, 202619 views

Agents

I gave Jev the 100 most popular apps In 12 seconds, it

@rainn_vibesSep 21, 2026269 views

Finance

Jev case: @thsottiaux Astra has learned to dunk!

@AionForgeSep 21, 202635 views

Dev tools

Built a search engine for our network this weekend with Jev.

@utpalnadigerSep 21, 2026640 views

Classification

Jev Opensources

The open-source side of this ecosystem, documented repository by repository: run typed decisions on your own hardware, in 100+ languages, or benchmark them head-to-head against Jev's hosted API.

Laya-MLXThe MLX port that makes Laya a local runtime: typed decisions in milliseconds on a Mac, with no PyTorch, no Transformers runtime and no cloud API in the loop.github.com/mizorewww/laya-mlx · Apple Silicon runtime Laya (official package)The open-source decision engine Jev's ideas are compared against: one forward pass per typed question, three checkpoints, and a router that picks the right one per request.github.com/NandhaKishorM/laya · Python · 100+ languages Laya vs Jev (T-Rex arena)A side-by-side arena rather than a spec sheet: local Laya and hosted Jev make the same choices in Chrome's T-Rex game, and the run is scored on agreement, latency and crashes.github.com/virajbhartiya/laya-vs-jev · Head-to-head benchmark

All Jev Opensources repositories →

What this Jev case library is

Jev is a decision model: it answers typed questions — a choice from a list, a score in a range, a calibrated yes/no — and returns probabilities instead of prose. That makes "a Jev use case" easy to spot: any step in real software that only ever needed a label. The cases below are the public record of people doing exactly that, from playable games to lead-scoring pipelines and browser agents.

Each card opens a case page with the author's original post, the video, the engagement numbers at collection time, any repository or live link they shared, and an English translation where the original post is not in English. Nothing is re-hosted as our own work: the case page always points back to the source post.

New to Jev? Start with what Jev is, the use-case guide, the API guide, the list of builders in this library, or the full guides index.

Last updated: 2026-10-19 · sources & corrections · every card links to its author's original post