ROBOTIS OP3 vs UBTech Walker S (S1 / S2)
Generated from the registry · revision 2026-09-26 · openness out of 100
No height, mass, DOF or payload figure is sourced for both ROBOTIS OP3 and UBTech Walker S (S1 / S2) yet. Openness score: ROBOTIS OP3 45, UBTech Walker S (S1 / S2) 0 (of 100); only ROBOTIS OP3 publishes SIM, FW and SW. Availability for both: buy.
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Side by side
■ rows differ| Field | ROBOTISROBOTIS OP3 | UBTech RoboticsUBTech Walker S (S1 / S2) | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | ROBOTIS | UBTech Robotics | |
| Class | Humanoid | Humanoid | |
| Status | Active | Active | |
| Availability | Buy | Buy | |
| Country (differs) | South Korea | China | |
| Year | —unsourced | 2023 | |
| Specifications | |||
| Height | 51cm | —unsourced | |
| Mass | 3.5kg | —unsourced | |
| Degrees of freedom | 20 | —unsourced | |
| Payload | —unsourced | 15kg | |
| Top speed | —unsourced | —unsourced | |
| Runtime | —unsourced | —unsourced | |
| Battery capacity | 36.6Wh | —unsourced | |
| Price | —unsourced | —unsourced | |
| Actuators (differs) | 20x Dynamixel XM430-W350-R | Servo joints with force feedback | |
| Compute (differs) | Intel NUC i3, 8GB RAM | BrainNet 2.0 + Co-Agent (UBTech software) | |
| Sensors (differs) | Logitech C920 camera, 9-axis IMU | RGB binocular stereo vision (S2) | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 45/ 100 | 0/ 100 | +45 |
| 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) (differs) | public | not public | |
| Software (10) (differs) | public | not public | |
| Trained policies (10) | not public | not public | |
| Verification level (differs) | L2 | L0 | |
| Sources (differs) | 2 | 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: ROBOTIS OP3, UBTech Walker S (S1 / S2).
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