A humanoid robot splits into a body — dozens of actuated joints, sensors, a battery, a metal skeleton — and a brain of AI chips. The two halves point in opposite directions: the body is overwhelmingly East Asian, especially Chinese; the brain is American and Taiwanese. And two superpowers are racing to assemble the whole machine — which is why this map, unlike the others, has two poles.
Strip a humanoid robot to its supply chain and it falls into two halves. The body is mechanical — roughly twenty-eight actuated joints, plus sensors, a battery and a metal skeleton. The brain is an AI computer. The two halves are sourced from opposite ends of the Earth: the body is built overwhelmingly in East Asia, and above all in China; the brain is designed in the United States and fabricated in Taiwan. That split is not a coincidence — it is the US–China technology contest in physical form.
The hard, expensive part is movement. Each of a humanoid's joints is an actuator — a frameless electric motor paired with a precision reducer (a harmonic or planetary gear) and an encoder — and actuators alone are roughly 30 to 50 percent of the whole bill of materials. Those motors depend on powerful rare-earth (NdFeB) magnets, and China processes about ninety percent of them; it also leads on motors, precision bearings, LiDAR and batteries, reusing the supply base it built for electric cars. The very high end of reducers and bearings is Japanese — Harmonic Drive, Nabtesco, NSK.
The other half is thought. The brain is an AI computer — Nvidia's Jetson is the de-facto standard — designed in the United States and, like every advanced chip, fabricated by TSMC in Taiwan. Compute is only ten to twenty percent of the cost, but it is the part the West leads and that China cannot yet fully replace. So the two halves of a humanoid map almost exactly onto the two halves of the US–China contest: America has the better brain, China the cheaper, deeper body.
More than sixty humanoid companies now exist, and over half are Chinese. The US pole — Tesla's Optimus, Figure, Boston Dynamics, Apptronik — leads on AI and ambition. The China pole — Unitree, UBTech, AgiBot, plus carmakers like Xiaomi, XPeng and BYD — leads on cost and on the body supply chain: Unitree's G1 starts near $13,500, and Beijing has a national plan to own the entire stack from core components to finished robot. The same components feed both poles, which is why the map forks into two diamonds rather than one.
Here is the twist that makes the robot different from anything else in the atlas: both poles bottleneck on the same input. Building Tesla's Optimus without Chinese suppliers would cost roughly three times as much — and in 2025 China placed rare-earth magnets under export licensing, a direct squeeze on every robot motor on Earth. The West is scrambling to catch up — MP Materials, allied supply chains — but it is years behind on the body. Set against the rest of the atlas, the humanoid is the fourth shape: the phone disperses, the battery funnels, the shirt relays — and the robot is contested, the same parts feeding two rival poles that both depend on one country's magnets.