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Jev

Jev is TypeSafe AI's decision model, released in September 2026. Instead of writing text, it evaluates the evidence it is given and returns typed answers with calibrated probabilities. That makes it a different tool from a chat model, suited to routing, scoring and classification inside a system. The guide here walks through how it works in an interactive 3D explainer.

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Reference Guide · 17 min read

What is Jev

Jev, released by TypeSafe AI on 2026-09-15, decides instead of writing. 14 stations across 4 kinds of responsibility, a 12-step guided journey from a ticket to a routed queue and on into an agent harness, the three answer shapes (Choice, Score, Noul) as working instruments, pricing and context limits from the vendor's own pages, and two independent preprints on where it fails. Sources checked 2026-09-24.

JevTypeSafe AISystem One modelAI AgentsClassificationStructured Outputs3D InteractiveAI Explainer

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3D InteractiveAI AgentsAI ExplainerClassificationStructured OutputsSystem One modelTypeSafe AI
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