Apptronik Apollo vs Kepler Forerunner K2 "Bumblebee"
Generated from the registry · revision 2026-09-26 · openness out of 100
Apollo is 2 cm shorter (173 vs 175 cm) and 2 kg lighter (73 vs 75 kg) than Kepler Forerunner K2 "Bumblebee". Apollo has 5 kg less rated payload (25 vs 30 kg) than Kepler Forerunner K2 "Bumblebee". Kepler Forerunner K2 "Bumblebee" lists at $30,000; Apollo is not for sale. Openness score: Apollo 20, Kepler Forerunner K2 "Bumblebee" 0 (of 100); only Apollo publishes SIM. Availability: Apollo not for sale, Kepler Forerunner K2 "Bumblebee" buy.
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Side by side
■ rows differ| Field | ApptronikApptronik Apollo | Kepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee" | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Apptronik | Kepler Robotics (Shanghai Kepler Exploration Robot Co.) | |
| Class | Humanoid | Humanoid | |
| Status | Active | Active | |
| Availability (differs) | Not for sale | Buy | |
| Country (differs) | United States | China | |
| Year (differs) | 2023 | 2024 | |
| Specifications | |||
| Height (differs) | 173cm | 175cm | −2 cm (-1%) |
| Mass (differs) | 73kg | 75kg | −2 kg (-3%) |
| Degrees of freedom | —unsourced | 52 | |
| Payload (differs) | 25kg | 30kg | −5 kg (-17%) |
| Top speed | —unsourced | —unsourced | |
| Runtime (differs) | 240min | 480min | −240 min (-50%) |
| Battery capacity | —unsourced | 2,330Wh | |
| Price (differs) | Not for sale | 30,000USD | |
| Actuators (differs) | Electric | 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) | 20/ 100 | 0/ 100 | +20 |
| CAD (25) | not public | not public | |
| Bill of materials (20) | not public | not public | |
| Sim model (URDF/MJCF) (20) (differs) | public | not public | |
| Firmware (15) | not public | not public | |
| Software (10) | not public | not public | |
| Trained policies (10) | not public | not public | |
| Verification level (differs) | L2 | L0 | |
| Sources (differs) | 4 | 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: Apollo, Kepler Forerunner K2 "Bumblebee".
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