What is Jev?

Jev is a System One decision model by TypeSafe AI. It returns typed Yes/No, Choice, and Score answers with provider-reported probabilities, so an application can inspect the result before routing work.

One shape, every time

Yes/No, Choice, and Score questions cover common triage, moderation, routing, scoring, and guardrail workflows. Probabilities are model estimates, not independent calibration guarantees.

From experiment to workflow

Test a decision in the Playground, run the same rule over a file with Batch, or call it from your backend through the Jev API.

AI-Jev is an independent service and is not affiliated with or endorsed by TypeSafe AI.