reflex
A small open decision model: state + typed questions -> calibrated probabilities. A Jev / System One re-creation on Qwen3.5.
How it uses Jev
It is an open re-creation of Jev, the "System One" model TypeSafe released in September 2026, built on top of a normal open-weights model (Qwen3.5-4B by default).
Source: community catalog. Details and metrics reflect the published community snapshot and are not a performance endorsement. Documentation details extracted from GitHub · the README.