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Jev
Unofficial TypeSafe Jev showcase — System One decisions, not chat.
140 ★ on GitHub
What it is
Jev Showcase — TypeSafe System One, not chat
The homepage listed on the repository, docs.typesafe.ai, puts it like this: Jev is TypeSafe's flagship model and the first System One model. Send state and typed questions; get structured answers your code can use directly.
Where the decision sits
Jev calls the hosted decision API rather than running its own weights. That keeps the project small and means its behaviour moves whenever the vendor ships a new model version. It also means an API key and a network round trip sit in the path of every decision.
Models it references: Jev.
How active it is
Created 2026-09-19, last pushed 2026-10-15, 140 stars and 30 forks when we read it on 2026-11-02. Everything in this category is weeks old at most, so a stale push date means something different here than it would on a mature project. Check the repository before you depend on it.
Find out what your data actually supports
We turn your historical decisions into a frozen test set, then tell you which model, which threshold, and how much of it you can safely automate.