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TypeSafe AI· Released Sep 15

Jev

Jev is TypeSafe AI's first public System One decision model: it answers closed questions (labels, yes/no, scores, choices) with structured output in milliseconds for a fraction of a cent, rather than generating prose.

Smart copy and paste that decides what to pasteSep 20

Entries

rari

@0xwhrrari · Sep 21

Jev + GrokBot Mac agent: an agents & browsers build posted by rari (@0xwhrrari) that puts Jev, TypeSafe AI's System One decision model, to work, with a demo video on the post.

Peter Wang

@the_cyw · Sep 18

X timeline labeler: a content & growth build posted by Peter Wang (@the_cyw) that puts Jev, TypeSafe AI's System One decision model, to work, with a demo video on the post.

Alan Daitch

@AlanDaitch · Sep 17

Jev plays Tetris: a games & real time build posted by Alan Daitch (@AlanDaitch) that puts Jev, TypeSafe AI's System One decision model, to work, with a demo video on the post.

Valentín Galfré

@galfrevn · Sep 21

Jev plays Truco: a games & real time build posted by Valentín Galfré (@galfrevn) that puts Jev, TypeSafe AI's System One decision model, to work, with a demo video on the post.

Visharad

@KashyapVisharad · Sep 22

Jev vs Laya: a games & real time build posted by Visharad (@KashyapVisharad) that puts Jev, TypeSafe AI's System One decision model, to work, with a demo video on the post.

WquGuru

@wquguru · Sep 22

Wquguru turned Jev into a retro 16-bit game where Jev pulls the trigger while another model plans the route, and cut a launch trailer for it.

Mike Kelly

@NicerInPerson · Sep 22

S1m: an agents & browsers build posted by Mike Kelly (@NicerInPerson) that puts Jev, TypeSafe AI's System One decision model, to work, with a demo video on the post.

BuildAgents

s1m

Jev: quick answers

What can you build with Jev?
People have published 180 public builds made with Jev. The most common uses are productivity (35), coding (29), games (24), agents (23) and content (21).
What are the best Jev GitHub repos?
The most-starred open-source Jev projects in the index are laya: Non-autoregressive System 1 decision engine. Typed choice, score and y, jev-ultrafast: Fastest and cheapest web agent and kev: Jev-like family of decision models built on top of Qwen3.5/3.8 you can.
Where do people share Jev projects?
Mostly on X, GitHub and Web, from 164 creators between Sep 15 and Oct 1.