Humanoid cleaning robots featuring Unitree's Chinese tech go viral in San Francisco

CEO of Tau Robotics, Alexander Koch, announced in an X post that the San Francisco startup has begun renting humanoid robots to clean people’s homes. 

The service would cost customers $30 an hour, even though the robots aren’t autonomous. Their hardware is made by Unitree, a Chinese manufacturer. However, the Trump administration has recently placed a ban on Chinese robot imports.

A human takes the wheel the whole time

Tau has a public waitlist and operates an invite-only service, with each visit lasting an hour. When a customer requests the service, a staff member drops off the robot at the customer’s home while a trained operator at Tau’s facility drives it. This happens in real time as an AI system manages balance and motor control.

According to Alex Koch, the service is “conceptually similar to autonomous driving,” that is, an individual retains full control of the robot until the technology can be trusted to function alone.

Human oversight is critical to the operations because today’s AI “cannot fully control a humanoid robot on its own,” thus an operator has to run the machine from Tau’s facility.

Some of these operators are employees, while some came through a recruitment agency.

Tau’s lineup of robots and its penchant for privacy

Tau has three machine models: Chelsea, Elon, and Tony. Chelsea takes care of kitchens and bathrooms with non-toxic products, while Elon learns where household items are placed over time, and Tony handles deep cleans. Customers remain home while the robots take out the trash, vacuum, clear clutter, and wipe counters.

Privacy is the trade-off. While microphones stay off, Tau records each session to train its cleaning models. Video footage is stored indefinitely unless a customer requests that it be deleted. Tau’s operators, engineers, and third-party maintain access to the footage.

The startup was founded by Alexander Koch and Cornelia Weinzierl in 2024, but has very little information about its operations published.

Chinese hardware, right after Washington placed a ban

Tau sourced the hardware of the robots from Unitree, while it designed the cameras, claws, and onboard computer in-house.

The Federal Communications Commission (FCC) has banned the importation of humanoid and quadruped robots from China for national security reasons. According to the FCC, such devices “could create supply chain vulnerabilities that could disrupt U.S. economic and national security,”

Unitree has just under 20% of the humanoid market share globally, and the company is looking at a STAR Market listing. However, with the recent ban by the Trump admin, Unitree stands in a vulnerable position as it may struggle to supply its customers, like Tau and Gatsby, a cleaning startup that charges $150 per visit and often uses the Unitree G1.

Not everyone is convinced by Tau yet

Ken Goldberg, who is a UC Berkeley engineering professor with four decades of experience, has his doubts. He considers the roll-out too early as machines may find it hard to pick objects off the floor and wipe the counters.

He views Tau’s marketing ploys as unconvincing, as viewers are unable to tell if the footage is staged. Koch disagrees, as he believes vacuuming and counter-wiping are already doable tasks for the robots.

Tau already has competition, with 1X Technologies launching its NEO home robot for a $499 monthly subscription, and Weave Robotics shipping a laundry-folding machine to a set of customers in California.

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