open-alternative-jev
Open alternative to Jev: typed, calibrated decisions from any open-weights LLM in one forward pass (HF + vLLM), with benchmarks
Open-source alternative to TypeSafe's Jev: a System One style model layer that gives typed, calibrated decisions from any open-weights LLM in one forward pass (HF + vLLM), with honest benchmarks
How it uses Jev
Open-source System One models: typed, calibrated decisions from any open-weights LLM, in one forward pass. An open alternative to the idea behind TypeSafe's Jev, running on your own GPU with models you already have. Python package open-alternative-jev , import name so1 ("System One"). Also known as: open Jev, Jev alternative, open-source System One model.
Getting started
The answer is always one of your options, and it comes with a probability.
Source: community catalog. Details and metrics reflect the published community snapshot and are not a performance endorsement. Documentation details extracted from GitHub · the README · the project website.





