Robot's hilarious high-arm run wins 400m at World Humanoid Games

A viral slow-motion video captured a peak robotics moment at Beijing's 2nd World Humanoid Robot Games, where the Tien Kung Ultra humanoid robot clinched gold in the large-group 400-meter final with a blistering time of 38.15 seconds.

Beating human records:

As reported by China Daily, the robot's recorded time of 38.15 seconds came in faster than the long-standing human men's 400m world record of 43.03 seconds, previously set by Wayde van Niekerk in 2016.

Spectators and online commentators heavily latched onto the robot's unique biomechanics, specifically its exaggerated, stiff-arm swing.

While the spectacle of stiff-armed bipedal runners shattering human track records has captured global attention, robotics experts emphasize that the core value of these competitions stretches far beyond entertainment.

To understand this mechanism engineers explained that this high-arm pump acts as a counter-balance to cancel out heavy angular momentum and hip rotation at high speeds, reading as entirely uncanny in slow motion.

Industry leaders note that while sprinting and jumping make for viral headlines, the ultimate measure of success for these humanoid platforms will be practical implementation.

Alongside track events, the ongoing games feature strict scenario-based challenges, including industrial assembly, EV charger plugging, warehouse logistics, and disaster response.

Rapid year-over-year evolution:

The performance highlights a massive leap in hardware and reinforcement learning; at the inaugural games, the winning 400m time clocked in at a sluggish 1 minute 28 seconds, making the 2026 event nearly 50 seconds faster.