# Dyna Robotics releases Dyna-2 world-action model, pretrained on one million hours of human video

- Source: 达纳灵动 · X
- Published: 2026-08-10T16:44:54.000Z
- RoboHot: https://robohot.news/en/items/pvft1vjumlcj74wtg2752q5ud
- Original: https://x.com/DynaRobotics/status/2086856327150858298

## Summary

Dyna Robotics introduces Dyna-2, a world-action model pretrained on one million hours of human video. The authors say they found several new scaling laws at this scale: world-action models across four orders of magnitude on human data (from 1,000 hours to 1.

## Why it matters

The original text provides data scales spanning four orders of magnitude and three scaling law conclusions, which can help readers understand how human video pretraining transfers to robot data.