$65,000PilotZeroth Robotics Sean: open-source 3D-printed humanoid platform from the Zeroth-bot project. Sub-£3,000 build; designed for sim-to-real and reinforcement-learning research on commodity hardware.
Sean is one of the open-source humanoid platforms from Zeroth Robotics — the team behind the broader Zeroth-bot project. The platform is positioned as a sub-£3,000 hobbyist / research humanoid built around 3D-printed parts plus commodity electronics, with the design files on GitHub (github.com).
Zeroth Robotics expanded into the US humanoid market at CES 2026, debuting a lineup of interactive AI robots including the small M1 home humanoid ($2,899), W1 mobile robot ($5,599) and Jupiter full-size humanoid. Sean fits within Zeroth's "Technology DNA" unified stack: advanced motion control + evolving interaction model + proprietary actuator engineering across consumer and commercial robots.