# New Model Available: TypeSafe: Jev 1.13

> Source: <https://zenmux.ai/typesafe/jev-1.13>
> Published: 2026-09-20 04:53:55+00:00

Jev is a structured decision model from TypeSafe, and the first of its System One models. System One models make fast, structured decisions for software, returning a typed choice rather than free-form text. It is suited for routing, classification, and other decision points inside an application where a fast, predictable answer matters more than generated prose.

Learn more in TypeSafe's docs: [https://docs.typesafe.ai/concepts/system-one](https://docs.typesafe.ai/concepts/system-one)