Jev launches: a System One model for decisions
TypeSafe founder Diogo Almeida introduces Jev, its RLCD training method, and its focus on software decisions. The post includes a 2:56 launch video.

Harrison Chase introduces Jev as a new type of "decision model" and mentions open-source alternative SemIf (based on qwen3.5), announcing free hosting of SemIf via LangSmith Gateway for one week.
jev is a new type of model - "decision models" there are a few open source alternatives, one is SemIf (based on qwen3.5) we're hosting SemIf and offering it for free through LangSmith Gateway for the next week!