Tiangong Ultra ran 100m in 8.86 seconds, then crashed and caught fire

A humanoid robot beat its own three-day-old sprint record on Tuesday, and then set itself on fire a few metres past the line.

The run

Tiangong Ultra, built by the Beijing Humanoid Robot Innovation Center, ran the 100 metres in 8.86 seconds in a semifinal of the large-robot division at the World Humanoid Robot Games on August 25, 2026. Three days earlier, in an opening-day heat, the same machine had run 9.39. Usain Bolt’s human world record has stood at 9.58 since Berlin in 2009.

Half a second in three days is the number worth holding onto. A year ago, at the first edition of these games, the same robot needed 21.50 seconds for the distance.

The part that is not solved

Accelerating is one problem. Stopping is a different one, and it has not been solved. Organisers place a thick padded mat past the finish line precisely because the machines have no way to decelerate under control. Tiangong hit the barrier, went down, threw sparks, and a small fire started inside its torso. Officials put it out on the track.

It was not an isolated failure. Across the week a robot face-planted attempting a front flip off a box, one lost its head during the high jump, one flipped out under a light weight and hit the judges’ table, and several came apart in the sprint heats.

Why the crash matters more than the record

A sprint is a straight line with a known length and no obstacles. It rewards raw actuation and gait control, which is the part of humanoid robotics that has improved fastest. What the mat exposes is the other half: recognising an unexpected obstacle, stopping safely, recovering from a fall and continuing to work. Those are the capabilities a robot needs in a warehouse or a kitchen, and they are the ones the footage keeps showing as missing.

The games ran August 22 to 26 at Beijing’s National Speed Skating Oval, with 666 teams and 2,056 robots from 16 countries competing across 51 events.