Kepler Forerunner K2 "Bumblebee" vs Unitree G1
Generated from the registry · revision 2026-09-26 · openness out of 100
Kepler Forerunner K2 "Bumblebee" is 43 cm taller (175 vs 132 cm) and 40 kg heavier (75 vs 35 kg) than Unitree G1. Kepler Forerunner K2 "Bumblebee" has 29 more degrees of freedom (52 vs 23) and 28 kg more rated payload (30 vs 2 kg) than Unitree G1. Listed prices: Kepler Forerunner K2 "Bumblebee" $30,000, Unitree G1 $13,500. Openness score: Kepler Forerunner K2 "Bumblebee" 0, Unitree G1 40 (of 100); only Unitree G1 publishes SIM, SW and POL. Availability for both: buy.
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Side by side
■ rows differ| Field | Kepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee" | Unitree RoboticsUnitree G1 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Kepler Robotics (Shanghai Kepler Exploration Robot Co.) | Unitree Robotics | |
| Class | Humanoid | Humanoid | |
| Status | Active | Active | |
| Availability | Buy | Buy | |
| Country | China | China | |
| Year | 2024 | 2024 | |
| Specifications | |||
| Height (differs) | 175cm | 132cm | +43 cm (+33%) |
| Mass (differs) | 75kg | 35kg | +40 kg (+114%) |
| Degrees of freedom (differs) | 52 | 23 | +29 (+126%) |
| Payload (differs) | 30kg | 2kg | +28 kg (+1400%) |
| Top speed | —unsourced | —unsourced | |
| Runtime (differs) | 480min | 120min | +360 min (+300%) |
| Battery capacity | 2,330Wh | —unsourced | |
| Price (differs) | 30,000USD | 13,500USD | +16,500 USD (+122%) |
| Actuators (differs) | Hybrid roller-screw linear + rotary actuators | Unitree in-house electric joint motors | |
| Compute (differs) | 100 TOPS onboard | 8-core CPU; optional Jetson Orin module (EDU) | |
| Sensors (differs) | 80+ integrated sensors; tactile dexterous hands | Depth camera, 3D LiDAR, 4-mic array | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 0/ 100 | 40/ 100 | −40 |
| CAD (25) | not public | not public | |
| Bill of materials (20) | not public | not public | |
| Sim model (URDF/MJCF) (20) (differs) | not public | public | |
| Firmware (15) | not public | not public | |
| Software (10) (differs) | not public | public | |
| Trained policies (10) (differs) | not public | public | |
| Verification level (differs) | L0 | L2 | |
| Sources | 2 | 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: Kepler Forerunner K2 "Bumblebee", Unitree G1.
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