Alex

Alex is the fully electric successor to Nadia at IHMC, the not-for-profit Institute for Human and Machine Cognition in Pensacola, Florida, part of the Florida University System and active in humanoid research for more than twenty years.

The robot has 29 joints driven by custom back-drivable quasi-direct-drive actuators, and everything it needs, computing, perception and power, travels on board without a tether. IHMC lists 179 cm height, 85 kg weight, a payload of at least 15 kg, a walking speed of at least 1.5 m/s and at least two hours of runtime, all expressed as minimum values.

Hands and fingers are not described, so gripper details quoted elsewhere are unconfirmed. Alex is designed for outdoor operation, disaster response and military scenarios, with funding from the Office of Naval Research, the Army Research Laboratory and the Army DAC programme.

Its status is research platform rather than commercial product, although the institute accepts purchase enquiries through a dedicated sales address. Price on request. Among electric research-grade humanoids in the catalogue, Atlas pursues similar goals from a corporate lab, whereas Alex comes from an academic institute.