Menlo Asimov 1 vs ROBOTIS OP3
Generated from the registry · revision 2026-09-26 · openness out of 100
Asimov 1 is 69 cm taller (120 vs 51 cm) and 31.5 kg heavier (35 vs 3.5 kg) than ROBOTIS OP3. Asimov 1 has 5 more degrees of freedom (25 vs 20) than ROBOTIS OP3. Openness score: Asimov 1 70, ROBOTIS OP3 45 (of 100); only Asimov 1 publishes CAD. Availability: Asimov 1 kit, ROBOTIS OP3 buy.
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Side by side
■ rows differ| Field | Menlo Research (Asimov)Menlo Asimov 1 | ROBOTISROBOTIS OP3 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Menlo Research (Asimov) | ROBOTIS | |
| Class | Humanoid | Humanoid | |
| Status | Active | Active | |
| Availability (differs) | Kit | Buy | |
| Country (differs) | Singapore | South Korea | |
| Year | 2026 | —unsourced | |
| Specifications | |||
| Height (differs) | 120cm | 51cm | +69 cm (+135%) |
| Mass (differs) | 35kg | 3.5kg | +31.5 kg (+900%) |
| Degrees of freedom (differs) | 25 | 20 | +5 (+25%) |
| Payload | —unsourced | —unsourced | |
| Top speed | —unsourced | —unsourced | |
| Runtime | —unsourced | —unsourced | |
| Battery capacity | —unsourced | 36.6Wh | |
| Price | 20,000USD | —unsourced | |
| Actuators (differs) | CAN-bus actuators; 6 DOF/leg, 5 DOF/arm, 1 waist, 2 neck; RSU ankle with passive toes | 20x Dynamixel XM430-W350-R | |
| Compute (differs) | Raspberry Pi 5 (media/network) + Radxa CM5 (motion control) | Intel NUC i3, 8GB RAM | |
| Sensors (differs) | 2MP monocular camera, stereo mic array, 6-DOF IMU, joint states | Logitech C920 camera, 9-axis IMU | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 70/ 100 | 45/ 100 | +25 |
| CAD (25) (differs) | public | not public | |
| Bill of materials (20) | not 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 (differs) | L1 | L2 | |
| Sources (differs) | 3 | 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: Asimov 1, ROBOTIS OP3.
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