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Map / Core AI / Foundation Models / Jev

Jev

by TypeSafe AI

TypeSafe's decision model: typed questions in, calibrated probabilities out

CuratedDecision Models

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What it does

Jev is TypeSafe's decision model and the first System One model. You send a state (text or JSON) and typed questions to one API endpoint: choice, score, yes/no and, from version 1.14, image boxes. Each answer comes back structured, with a probability for every option and a confidence, and no text is generated. Only input tokens are billed. Jev 1.14 also added image input and an optional long context.

Versions

Every Jev version and when it came out. Each dot is a release.

2026TodayJevJev 1.13, 15 Sep 20261.13Jev 1.14, 14 Oct 20261.14

VersionPreviewLatest version

VersionReleasedAfter previousStatusSource
Jev 1.1414 Oct 202629 daysLatesttypesafe.ai
Jev 1.1315 Sep 2026Firsttypesafe.ai

Dates from TypeSafe AI's own announcements; each row links to its source.

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