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Decision models, in depth.

Articles on System One decision models — how they differ from LLMs, the Laya and Jev architectures, calibration, and publishing to the registry.

September 18, 2026 · 2 min read

Jev, explained — the first System One model

Jev is the model that named the category. What it takes in, what it returns, what it costs, and what its makers have not said.