# X-Era AI Tuoyuan Zhihui releases open-source 4D world action model E0.5, with out-of-distribution real-robot success rate surpassing π0.5

- Source: OFweek Robotics
- Published: 2026-10-30T03:03:00.000Z
- RoboHot: https://robohot.news/en/items/jgaktur7bctl3wwptg96k5zvo
- Original: https://robot.ofweek.com/2026-10/ART-8321206-8120-30709495.html

## Summary

X-Era AI Tuoyuan Zhihui released the open-source native 4D world action model E0.5, which uses a 3D foundation model as its backbone and integrates future 3D geometry prediction directly into action learning. On the AgileX Piper dual-arm robot and the Zerith H1 humanoid robot, after pretraining on about 160,000 robot trajectories, E0.5 achieved overall average success rates of 85.0% and 88.3%, respectively, improving on π0.5 by 13.3 and 26.7 percentage points; its out-of-distribution average success rates were 73.3% and 76.7%.