Xiaomi has shown off humanoid robots working an entire eight-hour shift at its electric car factory, but the most interesting machine in the footage might not be a humanoid at all.
The Chinese technology giant claims its robots can independently sort car components, detect mistakes and correct them while working on a real production line. But a closer look at the demonstration reveals something unexpected: when things go wrong, a robot on wheels comes to the rescue.
The demonstration has reignited debate over whether humanoid robots could eventually replace human workers on factory floors. While the prospect of machines working tirelessly through entire shifts sounds impressive, questions remain over how quickly factories can become fully automated and whether these robots are truly ready to work without human supervision.
The footage has also reignited a bigger question about the future of factory automation: are humanoid robots really the answer, or would machines with wheels be better suited to the job?
8 hours on the production line. 🤖
— Xiaomi Tech (@XiaomiTech_) November 3, 2026
Xiaomi’s full-size humanoid robot takes on an 8-hour task at the Center Console Side-Cover Sorting Workstation at Xiaomi Auto Factory.
Beyond sustained operation, it can autonomously detect and correct anomalies while coordinating with the… pic.twitter.com/brpO3S5bCn
The Robot Breakthrough – And the Unexpected Star of the Show
Xiaomi Tech posted the footage on X on 3 November, showing two-legged robots sorting centre-console side covers at its electric vehicle factory.
The machines can be seen pulling components from bins, carrying them to storage racks and placing them into designated slots. A running clock tracks their cumulative working time, while an on-screen label reads 'Autonomous, 100x Speed'.
According to Xiaomi, the robots covered the workstation's full daily production requirements. The company also claims they could detect and correct anomalies independently while coordinating with the production line's control system.
It is the latest milestone in a programme Xiaomi has been developing throughout the year.
In March, the company reported a 90.2 per cent success rate during a three-hour trial involving humanoid robots installing self-tapping nuts at its Beijing factory. By July, that figure had reportedly climbed to 98 per cent.
But the most revealing moment in the latest video arrives around the 1:37 mark. In a segment labelled 'Dropped Material: Multi-Robot Collaboration', a humanoid upper body mounted on a wheeled base rolls over to help the two-legged machines after a component falls.
It is not the only wheeled machine doing useful work. Autonomous mobile robots are also transporting bins of components around the factory.
In other words, while Xiaomi is showcasing its humanoid technology, some of the supporting work is already being handled by machines that do not need legs.
Why Wheels Could Beat Legs in the Factory
There is a practical reason why the wheeled robot deserves attention. Wheels are generally more efficient than legs on flat surfaces, particularly inside factories designed around carts, forklifts and automated transport systems.
A wheeled machine does not need to constantly balance itself, making it more stable when carrying heavy objects. It can also accommodate a larger battery and requires fewer complicated moving parts than a bipedal robot.
That could make wheeled robots cheaper and easier to maintain, while allowing them to spend more energy on the actual job.
Humanoid robots still have an advantage in environments designed for people, particularly homes with stairs, narrow passages and objects built around human hands.
But a factory floor is a different story. Why build a machine that walks like a person when the job can be done more efficiently on wheels?
Impressive Claims, but Questions Remain
There is another reason to be cautious about Xiaomi's breakthrough: the company has not released several important performance figures.
It has not disclosed how many components were sorted, the overall success rate during the eight-hour demonstration or how often human workers had to intervene.
The footage does, however, show two charging breaks, at around three hours and six hours of cumulative operation, before displaying a final time of eight hours and five minutes of stable operation.
That is still a significant endurance test, but it is not the same as running continuously for eight hours on one charge. Previous humanoid demonstrations have also raised questions about autonomy. Tesla's Optimus robots at the 2024 'We, Robot' event were remotely operated by humans, something the company did not disclose at the time.
Xiaomi deserves credit for testing its machines on an actual production line and publishing some performance figures from earlier trials. But its latest demonstration still needs more independently verifiable data.
The company's ambition is to deploy humanoid robots across its factories in large numbers within five years, according to chief executive Lei Jun.
For now, however, the most interesting lesson from Xiaomi's factory might be that the future of industrial robots does not necessarily need two legs.
The brains, hands and artificial intelligence could matter far more than the body carrying them. And if factories are any indication, the winning machines might be rolling rather than walking.
