K-Scale Z-Bot (Zeroth Bot) vs Menlo Asimov 1
Generated from the registry · revision 2026-09-26 · openness out of 100
Z-Bot (Zeroth Bot) is 74 cm shorter (46 vs 120 cm) than Asimov 1. Z-Bot (Zeroth Bot) has 7 fewer degrees of freedom (18 vs 25) than Asimov 1. Listed prices: Z-Bot (Zeroth Bot) $999, Asimov 1 $20,000. Openness score: Z-Bot (Zeroth Bot) 90, Asimov 1 70 (of 100); only Z-Bot (Zeroth Bot) publishes BOM. Availability: Z-Bot (Zeroth Bot) diy build, Asimov 1 kit.
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Side by side
■ rows differ| Field | K-Scale LabsK-Scale Z-Bot (Zeroth Bot) | Menlo Research (Asimov)Menlo Asimov 1 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | K-Scale Labs | Menlo Research (Asimov) | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Orphaned | Active | |
| Availability (differs) | DIY build | Kit | |
| Country (differs) | United States | Singapore | |
| Year (differs) | 2025 | 2026 | |
| Specifications | |||
| Height (differs) | 46cm | 120cm | −74 cm (-62%) |
| Mass | —unsourced | 35kg | |
| Degrees of freedom (differs) | 18 | 25 | −7 (-28%) |
| Payload | —unsourced | —unsourced | |
| Top speed | —unsourced | —unsourced | |
| Runtime | —unsourced | —unsourced | |
| Battery capacity | —unsourced | —unsourced | |
| Price (differs) | 999USD | 20,000USD | −19,001 USD (-95%) |
| Actuators (differs) | 18 servo motors | CAN-bus actuators; 6 DOF/leg, 5 DOF/arm, 1 waist, 2 neck; RSU ankle with passive toes | |
| Compute | —unsourced | Raspberry Pi 5 (media/network) + Radxa CM5 (motion control) | |
| Sensors (differs) | cameras, IMU (per press) | 2MP monocular camera, stereo mic array, 6-DOF IMU, joint states | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 90/ 100 | 70/ 100 | +20 |
| CAD (25) | public | 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), Asimov 1.
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