Kepler Forerunner K2 "Bumblebee" vs K-Scale K-Bot
Generated from the registry · revision 2026-09-26 · openness out of 100
Kepler Forerunner K2 "Bumblebee" is 35 cm taller (175 vs 140 cm) and 41 kg heavier (75 vs 34 kg) than K-Bot. Kepler Forerunner K2 "Bumblebee" has 32 more degrees of freedom (52 vs 20) and 20 kg more rated payload (30 vs 10 kg) than K-Bot. Listed prices: Kepler Forerunner K2 "Bumblebee" $30,000, K-Bot $8,999. Openness score: Kepler Forerunner K2 "Bumblebee" 0, K-Bot 100 (of 100); only K-Bot publishes CAD, BOM, SIM, FW, SW and POL. Availability: Kepler Forerunner K2 "Bumblebee" buy, K-Bot diy build.
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Side by side
■ rows differ| Field | Kepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee" | K-Scale LabsK-Scale K-Bot | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Kepler Robotics (Shanghai Kepler Exploration Robot Co.) | K-Scale Labs | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Active | Discontinued | |
| Availability (differs) | Buy | DIY build | |
| Country (differs) | China | United States | |
| Year (differs) | 2024 | 2025 | |
| Specifications | |||
| Height (differs) | 175cm | 140cm | +35 cm (+25%) |
| Mass (differs) | 75kg | 34kg | +41 kg (+121%) |
| Degrees of freedom (differs) | 52 | 20 | +32 (+160%) |
| Payload (differs) | 30kg | 10kg | +20 kg (+200%) |
| Top speed | —unsourced | —unsourced | |
| Runtime (differs) | 480min | 240min | +240 min (+100%) |
| Battery capacity | 2,330Wh | —unsourced | |
| Price (differs) | 30,000USD | 8,999USD | +21,001 USD (+233%) |
| Actuators (differs) | Hybrid roller-screw linear + rotary actuators | RobStride RS00 x2, RS02 x6, RS03 x8, RS04 x4 | |
| Compute (differs) | 100 TOPS onboard | Raspberry Pi 5 | |
| Sensors (differs) | 80+ integrated sensors; tactile dexterous hands | cameras, microphones, head sensor array | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 0/ 100 | 100/ 100 | −100 |
| CAD (25) (differs) | not public | public | |
| Bill of materials (20) (differs) | not public | public | |
| Sim model (URDF/MJCF) (20) (differs) | not public | public | |
| Firmware (15) (differs) | not public | public | |
| Software (10) (differs) | not public | public | |
| Trained policies (10) (differs) | not public | public | |
| Verification level (differs) | L0 | L1 | |
| Sources (differs) | 2 | 7 | |
| Last checked (differs) | 2026-09-24 | 2026-09-25 | |
A dash is an unsourced figure, not zero. Sources for each robot are listed on its spec sheet: Kepler Forerunner K2 "Bumblebee", K-Bot.
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