K-Scale Z-Bot (Zeroth Bot) vs Pollen Reachy 2
Generated from the registry · revision 2026-09-26 · openness out of 100
Z-Bot (Zeroth Bot) is 120 cm shorter (46 vs 166 cm) than Reachy 2. Both list the same degrees of freedom (18). Listed prices: Z-Bot (Zeroth Bot) $999, Reachy 2 $70,000. Openness score: Z-Bot (Zeroth Bot) 90, Reachy 2 45 (of 100); only Z-Bot (Zeroth Bot) publishes CAD and BOM. Availability: Z-Bot (Zeroth Bot) diy build, Reachy 2 buy.
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Side by side
■ rows differ| Field | K-Scale LabsK-Scale Z-Bot (Zeroth Bot) | Pollen Robotics (Hugging Face)Pollen Reachy 2 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | K-Scale Labs | Pollen Robotics (Hugging Face) | |
| Class (differs) | Humanoid | Wheeled humanoid | |
| Status (differs) | Orphaned | Active | |
| Availability (differs) | DIY build | Buy | |
| Country (differs) | United States | France | |
| Year (differs) | 2025 | 2024 | |
| Specifications | |||
| Height (differs) | 46cm | 166cm | −120 cm (-72%) |
| Mass | —unsourced | 50kg | |
| Degrees of freedom | 18 | 18 | = |
| Payload | —unsourced | 3kg | |
| Top speed | —unsourced | 0.83m/s | |
| Runtime | —unsourced | —unsourced | |
| Battery capacity | —unsourced | 840Wh | |
| Price (differs) | 999USD | 70,000USD | −69,001 USD (-99%) |
| Actuators (differs) | 18 servo motors | Orbita parallel joints (neck, wrists) | |
| Compute | —unsourced | SolidRun BedRock V3000 industrial PC | |
| Sensors (differs) | cameras, IMU (per press) | 2x IMX296 RGB, Orbbec Gemini 336 RGB-D, ToF, RPLIDAR S2, IMU, microphones | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 90/ 100 | 45/ 100 | +45 |
| CAD (25) (differs) | public | not public | |
| Bill of materials (20) (differs) | public | not public | |
| Sim model (URDF/MJCF) (20) | public | public | |
| Firmware (15) | public | public | |
| Software (10) | public | public | |
| Trained policies (10) | not public | not public | |
| Verification level | L1 | L1 | |
| Sources | 3 | 3 | |
| 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: Z-Bot (Zeroth Bot), Reachy 2.
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