UC Berkeley Humanoid Lite vs Kepler Forerunner K2 "Bumblebee"
Generated from the registry · revision 2026-09-26 · openness out of 100
Berkeley Humanoid Lite is 95 cm shorter (80 vs 175 cm) and 59 kg lighter (16 vs 75 kg) than Kepler Forerunner K2 "Bumblebee". Berkeley Humanoid Lite has 30 fewer degrees of freedom (22 vs 52) than Kepler Forerunner K2 "Bumblebee". Openness score: Berkeley Humanoid Lite 100, Kepler Forerunner K2 "Bumblebee" 0 (of 100); only Berkeley Humanoid Lite publishes CAD, BOM, SIM, FW, SW and POL. Availability: Berkeley Humanoid Lite diy build, Kepler Forerunner K2 "Bumblebee" buy.
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Side by side
■ rows differ| Field | UC Berkeley Hybrid Robotics LabUC Berkeley Humanoid Lite | Kepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee" | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | UC Berkeley Hybrid Robotics Lab | Kepler Robotics (Shanghai Kepler Exploration Robot Co.) | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Research | Active | |
| Availability (differs) | DIY build | Buy | |
| Country (differs) | United States | China | |
| Year (differs) | 2025 | 2024 | |
| Specifications | |||
| Height (differs) | 80cm | 175cm | −95 cm (-54%) |
| Mass (differs) | 16kg | 75kg | −59 kg (-79%) |
| Degrees of freedom (differs) | 22 | 52 | −30 (-58%) |
| Payload | —unsourced | 30kg | |
| Top speed | —unsourced | —unsourced | |
| Runtime | —unsourced | 480min | |
| Battery capacity | —unsourced | 2,330Wh | |
| Price | —unsourced | 30,000USD | |
| Actuators (differs) | BLDC motors with 3D-printed cycloidal gearboxes | Hybrid roller-screw linear + rotary actuators | |
| Compute | —unsourced | 100 TOPS onboard | |
| Sensors | —unsourced | 80+ integrated sensors; tactile dexterous hands | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 100/ 100 | 0/ 100 | +100 |
| CAD (25) (differs) | public | not public | |
| Bill of materials (20) (differs) | public | not public | |
| Sim model (URDF/MJCF) (20) (differs) | public | not public | |
| Firmware (15) (differs) | public | not public | |
| Software (10) (differs) | public | not public | |
| Trained policies (10) (differs) | public | not public | |
| Verification level (differs) | L2 | L0 | |
| Sources (differs) | 3 | 2 | |
| Last checked | 2026-09-24 | 2026-09-24 | |
A dash is an unsourced figure, not zero. Sources for each robot are listed on its spec sheet: Berkeley Humanoid Lite, Kepler Forerunner K2 "Bumblebee".
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