The Ace table tennis robot has reached a major milestone in robotics after competing against and sometimes defeating top-level human players in Tokyo. Developed by Sony’s AI research division, Ace is the first robot to achieve expert-level performance in a competitive physical sport under official table tennis rules.
The breakthrough was detailed in a study published in Nature on April 22–23, 2026. Researchers say the achievement could open the door to wider uses for fast, adaptive robots in manufacturing, service work, sports, and other high-speed physical environments
Ace combines high-speed perception, AI-based control, and advanced robotic hardware. The system uses multiple high-speed cameras, including nine around the court, to track the ball and even read its spin through the ball’s logo.
Its control system relies on reinforcement learning, meaning the robot improves through trial and error rather than fixed hand-coded rules. That allows Ace to react in real time in a sport where timing, accuracy, and decision-making happen at the edge of human reaction speed.
Why this AI table tennis breakthrough matters
Table tennis has long been a difficult challenge for robots because it demands fast movement, precision, and continuous adaptation against an opponent. Earlier ping-pong robots existed for decades, they were limited to beginner or intermediate play and could not truly rival elite humans.
Ace changed that by performing against elite-level and professional players in matches held under International Table Tennis Federation rules and overseen by licensed umpires. That makes the project a major step in what researchers call embodied AI — systems that can sense, decide, and act effectively in dynamic physical spaces.
🏓 An autonomous robot ping-pong player dubbed Ace achieved a milestone for AI and robotics in Tokyo by competing against and sometimes defeating top-level human players at table tennis, in a video released by Sony AI https://t.co/raYQY9KCAB pic.twitter.com/v4vxVmG4lS
— Reuters (@Reuters) April 23, 2026Ace as sometimes defeating elite and professional competitors. It says the robot won three out of five matches against elite players in April 2025 and later challenged professionals closely in tests through late 2025 and early 2026. Project leader Peter Dürr said the goal was not just to build a robot that can play table tennis, but to understand how machines can perceive, plan, and act with human-like speed and precision in real-world environments.
Ace’s success could influence future work in manufacturing, service robotics, sports training, and safety-critical systems. In each of those areas, machines may need to respond instantly and accurately while interacting with people or unpredictable surroundings. That is why Ace is being seen as more than a sports robot. It may also be an early sign of how AI systems will eventually handle complex physical tasks once thought to be beyond machines.
