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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

Smart copy and paste that decides what to paste

Marcus Lowe wired Jev between copy and paste so that what you copied and where you are pasting decide what lands, an early look at decision models rewriting everyday computer interactions.

Build · 9.8K likes

Marcus Lowe Sep 20X

A text box that turns into whatever UI you type

Anish built a text box that becomes the interface you describe as you type, using Jev to choose the right UI component in real time instead of generating code.

Build · 6.2K likes

anish. Sep 22X

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.