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Nace AI Details Training Method for Open-Weight Drex Models in 51-Page Report

November 6, 2026 at 13:51 EST

Foundation Models
Open Source

Nace AI has published a 51-page report describing how it trained Drex, its family of open-weight AI models designed to select the most likely answer from a fixed set of options.

Nace AI · Drex v1.5 training report

Nace AI details how it trained Drex to choose the right answer from fixed options

A 51-page report describes Drex v1.5, trained on 1.15 million example decisions with verified answers, including examples drawn from contract-reading tasks.

1.15M

verified example decisions used for training

pages in the training report

v1.5

Drex version covered by the report

The training scale, drawn to size

Each block = 10,000 verified examples · 115 blocks ≈ 1.15 million

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