Open-source decision model family Drex debuts, Drex Max tops decision benchmarks
arankomatsuzaki · x · 2026-11-06
Nace AI released Drex, an open-source multimodal decision model family, along with a technical report detailing training via RLAF.
- Drex Max beats Jev 1.14 and ties GPT-6 Sol on Decision Bench v4, has the highest accuracy on DecideBench, and is competitive on JevBench-231. The leaderboard chart shows a public-suite Decision Index 0.4.1 of 67.52 (full score 66.60), ahead of Jev 1.14.0 (60.70/60.24) and GPT-6 Luna Decisions (47.78)
- Sibling versions Drex v2.0, v1.5 and Drex DLM score progressively lower
- Drex Max 1.1 and Drex for Finance remain closed-source for enterprise use
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