Dyna-2 World-Action Model: 1M Hours of Human Video Pre-training Yields Human-to-Robot Transfer Scaling Law

chris_j_paxton · x · 2026-08-16

Dyna Robotics introduces Dyna-2, a world-action model pre-trained on over one million hours of human video. It demonstrates scaling laws on held-out human data and, for the first time, proves the existence of a human-to-robot transfer scaling law, showing performance gains on unseen robot data. The paper details the data, modeling choices, and technical insights.

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