Kelen - Knowledge Has Limits, the Journey Does Not

What Is Jev? TypeSafe AI's New Model — This AI Model That "Doesn't Generate a Single Word" Makes Structured Decisions 193x Faster and 444x Cheaper

An in-depth look at Jev, released by TypeSafe AI — a System One model. It doesn't chat or write articles; simply feed it unstructured state and it outputs typed probabilistic decisions in parallel. It supports three primitives — Choice, Score, and Noul — with end-to-end latency of just 70–500ms and costs hundreds of times lower than frontier LLMs. The article includes a complete Python SDK example, real developer use cases, and boundary conditions to help you decide whether to build high-frequency, low-cost decision-layer infrastructure with it.