A robot’s fingers snap together LEGO bricks, then gently sort grapes without bruising a single one. That’s not a sci-fi trailer. That’s 1X Technologies’ NEO humanoid running its newly unveiled 25-degree-of-freedom hands — and the Norwegian robotics company is making a bold claim: the hardware ceiling on robotic dexterity is essentially gone. What’s left? Teaching the AI brain to actually use those fingers.
What 25 Degrees of Freedom Actually Means
NEO’s tendon-driven fingers can feel what they’re touching and report forces back through the same mechanical path.
Degrees of freedom means the number of independent ways a joint can move. NEO’s hands pack 22 actuated joints across the fingers and palm, plus three at the wrist. The system runs on a tendon-drive architecture operating at low gear ratios — roughly 5:1 to 15:1 — instead of the heavy gearing most robotic hands rely on. Push a finger and it yields, simultaneously reporting the exact force applied. 1X calls this “read-write” capability: the same tendons that move the joints also sense what those joints are feeling. Positioning accuracy hits ±0.2 mm — tight enough to pick up individual screws and coins.
Demonstrated tasks include:
- Assembling LEGO structures and picking individual screws
- Plugging in USB-C connectors and spinning in light bulbs
- Pouring tea, sorting grapes, and holding wine glasses
- Catching soft balls and performing sign language
That’s a range most competing humanoids can’t match.
“The robot can now do the things humans do with their hands, every day. This is what the industry has been waiting for,” according to 1X CEO Bernt Børnich. The numbers back the claim: the thumb generates 3.5 Nm of peak torque, fingertips push up to 45 N of flexion force, and the wrist delivers 17.75 Nm — enough for tool use and opening stubborn doors. The hands are IP68 waterproof, built from food-safe materials, and can wash themselves under running water. Specs that match real-world performance are rarer than the spec sheets suggest.
The Factory and the Skeptics
Tendon systems have a well-documented Achilles heel — they stretch — and a California production line won’t settle that question alone.
Tendon-driven designs can degrade over time, a known challenge in robotics circles that lab cycle counts don’t fully address. Real kitchens with sticky countertops operate differently than controlled test environments. 1X reports that components have survived millions of operating cycles and wrist joints have been validated beyond two million cycles under heavy loads — encouraging numbers, though long-term field data from consumer deployments remains the real test. One minor point worth flagging: earlier 1X materials referenced 22-DoF hands; the updated figure of 25 adds three wrist degrees of freedom to the count.
On the manufacturing side, 1X is producing up to 10,000 NEO units annually at its Hayward, California facility — described as America’s first vertically integrated high-volume humanoid robot factory — with ambitions to scale past 100,000 units by end of 2027. Motors, tendons, sensors, and polymer skins are all built in-house.
With hardware reportedly no longer the ceiling, the race pivots to AI and training data. A fleet of 100,000 NEOs collecting real-world manipulation data could accelerate robot learning the way large autonomous-vehicle fleets accelerated self-driving development. The hands are ready. Whether the AI brain keeps up is the only question that matters now.
