It is no secret that Tesla is working hard to improve Optimus. The latest video from Elon shows Optimus doing some fancy footwork. It can dance with agility. This was entirely trained in simulation with reinforcement learning. There is a cable in the below video but that is just as a precaution just in case of a fall.
As Milan Kovac from Optimus engineering team suggests, this robot will get more stable very quickly.
[HT]