OpenDecider ships an open calibrated decision family on PyPI

Source · Model card: OpenDecider

On 27 September 2026, manjunathshiva opened OpenDecider (pip install opendecider, PyPI 0.1.2): a family of open System One-style models that answer choice / score / noul with calibrated probabilities. Flagship opendecider-nano (~400M) plus 4B and 30B-A3B *-td siblings, Colab, and a live Space.

The README’s head-to-head (Antz harness + TypeSafe API for Jev) puts nano at 0.796 on typed-decisions vs Laya TD 0.766 and Jev 0.754 — UnverifiedClaim, and nano (like Laya’s TD checkpoint) was fine-tuned on the train split. A MachineLearningNews thread drew roughly 51 upvotes.

Catalog entry: /models/opendecider. Not the same project as the earlier mvbalaji/od1* watch cards.