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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

u/kristiyanstoyanovAI

@kristiyanstoyanovAI · Sep 21

A Reddit builder shared a router where Jev decides per request whether a local Qwen model or hosted Sonnet should answer, with a UI that shows each routing decision.

Tom Frazier

slopmop.lol · Sep 21

Slop Mop: a live tools & apps site by Tom Frazier where Jev, TypeSafe AI's System One decision model, makes the structured judgments behind the product.

Tamir

jevform.spiritt.app · Sep 20

JevForm: a live tools & apps site by Tamir where Jev, TypeSafe AI's System One decision model, makes the structured judgments behind the product.

Steve Krouse

typesafe-demo.val.run · Sep 19

TypeSafe Typewriter: a live content & growth site by Steve Krouse where Jev, TypeSafe AI's System One decision model, makes the structured judgments behind the product.

Jon Kraayenbrink

madewithjev.com · Sep 19

AI slop detector: a live content & growth site by Jon Kraayenbrink where Jev, TypeSafe AI's System One decision model, makes the structured judgments behind the product.

Drew Breunig

@dbreunig · Sep 18

An agent skill repository (Building with Jev) listed in the Jev showcase that teaches coding agents how to call or build with TypeSafe AI's Jev decision model.

Jeff Emanuel

@Dicklesworthstone · Sep 18

An agent skill repository (skillranker) listed in the Jev showcase that teaches coding agents how to call or build with TypeSafe AI's Jev decision model.

TypeSafe AI

@typesafe-ai · Sep 18

An agent skill repository (TypeSafe agent skills) listed in the Jev showcase that teaches coding agents how to call or build with TypeSafe AI's Jev decision model.

Wayne Sutton

askjev.ai · Sep 18

Askjev.ai: a live tools & apps site by Wayne Sutton where Jev, TypeSafe AI's System One decision model, makes the structured judgments behind the product.

Raihan Khan

diffjury.up.railway.app · Sep 18

DiffJury: a live triage & routing site by Raihan Khan where Jev, TypeSafe AI's System One decision model, makes the structured judgments behind the product.

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.