Jev versus text-generating models
Jev does not generate free-form text. A side-by-side video compares parallel decision-making with token-by-token text generation.

The post explains that Jev takes the current state and questions with predefined answers, returning probabilities over those answers; labels are defined by the app, so the model cannot invent new ones.
Jev takes a state, the current situation, plus questions whose answers you fix in advance. It returns probabilities over those answers. Your app defines the labels, so the model cannot invent new ones.