TypeSafe AI
← Back
Punched-card and engineering drawing collage

Introducing System One Models & Jev

A public model with a software-oriented interface.

The announcement presents Jev as a System One model: state and typed questions go in, decisions and confidence come back. That framing is reflected throughout the public site.

The body uses a narrower measure than the heading. Display type carries the top of the page; regular text and terminal-style metadata carry the supporting details.

Public technical diagram from the Jev announcement
First-party figure, retained as visual evidence. Read the source article for its full context.

A typed interface

A state describes the situation. A question names the decision. A declared type limits the possible result. The application still owns authorization, retries and every resulting action.

In this guide, fixtures keep the behavior reproducible. Changing a local input updates a visible result; it never sends a request to a model.

decision.json
{
  "route_to": {
    "value": "account support",
    "confidence": 0.94
  }
}

Original local result fixture.

Read the evidence

Performance figure from the public announcement
Published performance claims are source material, not independently verified results of this study.

Read the complete original article ↗

Join Our Waitlist