Sanctuary AI Is Building Around The Humanoid Hand

Zeon Corporation invested in Sanctuary AI through Zeon Ventures and signed a collaboration around rugged elastomeric components for robotic hands used in industrial environments. Zeon is a Japanese specialty materials company, so the partnership gives Sanctuary’s recent hand work a supply-chain layer.

Sanctuary's hand architecture

Sanctuary has made the hand one of its main technical differentiators. In December 2024, the company disclosed dexterous robotic hands with 21 degrees of freedom and miniaturized hydraulic valves. Sanctuary said hydraulic actuation gives the hands higher power density than cable and electromechanical systems, with advantages across speed, strength, controllability, cycle life, impact resistance, and heat management.

That makes Sanctuary unusual among current humanoid developers, many of which have focused on electromechanical hands or tendon-driven fingers.

A hydraulic dexterous hand is a contact-heavy subsystem. It needs actuators, valves, and control policies, but it also needs elastomeric surfaces, protective layers, compliant structures, and wear-resistant materials that can survive repeated industrial contact while preserving tactile precision. Zeon's release names that exact target: rugged elastomeric components for robotic hands deployable in industrial environments.

Sanctuary has also reported durability testing around the hydraulic actuator layer. In its 2024 hand update, the company said its hydraulic valve actuators had been tested over 2 billion cycles without leakage or degradation. That is a company-reported test result but it gives useful context for why materials and cycle life belong in the same discussion as manipulation performance.

The zero-shot cube demo

The April letter-cube video is the clearest recent technical artifact around Sanctuary's hand. The task is narrow but difficult: the hand has to keep the cube stable, move it without using the palm as a support surface, and continuously track a changing target orientation. Sanctuary framed the result as zero-shot sim-to-real transfer for a learned dexterous manipulation policy.

The result belongs here because it shows where Sanctuary is putting technical emphasis: not only on full-body humanoid motion, but on training hand policies that can manipulate an object through contact changes, slip, and regrasping.

Touch, grasping and teleoperation

Sanctuary's hand focus predates the Zeon deal and the cube video. In December 2023, the company said it had acquired and accumulated IP assets related to touch and grasping, including assets from Giant.AI and the acquisition of Tangible Research. Sanctuary described the protected technologies as covering areas such as visual servoing, real-time grasp simulation, and mapping between visual and haptic data.

The same direction appears in Sanctuary's teleoperation material. The company has argued that teleoperation is part of teaching AI control systems how to operate in the physical world, and describes tactile sensing as part of collecting human behavioral data for robot learning. Sanctuary has also described HaptX gloves as part of its broader ecosystem for teleoperation and transmitting touch to operators, while HaptX separately positions its haptic gloves for robotic AI training and control.

For Sanctuary, that gives the hand work three connected layers: hydraulic manipulation hardware, touch/grasping IP, and human demonstration data. Zeon adds a fourth layer around materials for industrialized hand components.

Industrial context

Sanctuary is not presenting the hand as a lab-only end effector. The company's public market direction is industrial-grade humanoid robots for labor-constrained work environments, and its partner history includes manufacturing, retail, cloud infrastructure, and enterprise investors. Sanctuary describes itself as working to create and deploy industrial-grade humanoid robots, while its partnership with Magna was framed around development, deployment, and scaling of general-purpose robots in automotive manufacturing.

The company also has earlier real-world task history outside manufacturing. In a 2023 Mark's retail pilot in Langley, British Columbia, Sanctuary said its robot completed 110 retail-related tasks, including picking, packing, cleaning, tagging, labeling, and folding.

Sanctuary's July 2024 strategic financing also gives the company a broader industrial and enterprise context. The company said financing from BDC Capital's Thrive Venture Fund and InBC brought total investment to more than $140 million, with existing investors including Accenture, Bell, Export Development Canada, Evok Innovations, Magna, SE Health, Verizon Ventures, and Workday Ventures.

Have a robotics update Korthos should review? Send news, deployments, product releases, funding rounds, research, or media to tips@korthos.xyz or reach out on X at @agkorthos.