System One lists Oz Labs’s public models here, with their original licences, until someone from Oz Labs runs this page. It is not Oz Labs’s own account.
Oz Labs' open decision model. Give it a state, a question and options set at call time; it returns a probability per option plus an explicit abstain, in one forward pass with nothing generated. Weights are a LoRA adapter with Choice, Score and Noul heads over Qwen3.5-4B.
