K-Scale K-Bot vs ROBOTIS OP3
Generated from the registry · revision 2026-09-26 · openness out of 100
K-Bot is 89 cm taller (140 vs 51 cm) and 30.5 kg heavier (34 vs 3.5 kg) than ROBOTIS OP3. Both list the same degrees of freedom (20). Openness score: K-Bot 100, ROBOTIS OP3 45 (of 100); only K-Bot publishes CAD, BOM and POL. Availability: K-Bot diy build, ROBOTIS OP3 buy.
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Side by side
■ rows differ| Field | K-Scale LabsK-Scale K-Bot | ROBOTISROBOTIS OP3 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | K-Scale Labs | ROBOTIS | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Discontinued | Active | |
| Availability (differs) | DIY build | Buy | |
| Country (differs) | United States | South Korea | |
| Year | 2025 | —unsourced | |
| Specifications | |||
| Height (differs) | 140cm | 51cm | +89 cm (+175%) |
| Mass (differs) | 34kg | 3.5kg | +30.5 kg (+871%) |
| Degrees of freedom | 20 | 20 | = |
| Payload | 10kg | —unsourced | |
| Top speed | —unsourced | —unsourced | |
| Runtime | 240min | —unsourced | |
| Battery capacity | —unsourced | 36.6Wh | |
| Price | 8,999USD | —unsourced | |
| Actuators (differs) | RobStride RS00 x2, RS02 x6, RS03 x8, RS04 x4 | 20x Dynamixel XM430-W350-R | |
| Compute (differs) | Raspberry Pi 5 | Intel NUC i3, 8GB RAM | |
| Sensors (differs) | cameras, microphones, head sensor array | Logitech C920 camera, 9-axis IMU | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 100/ 100 | 45/ 100 | +55 |
| 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) (differs) | public | not public | |
| Verification level (differs) | L1 | L2 | |
| Sources (differs) | 7 | 2 | |
| Last checked (differs) | 2026-09-25 | 2026-09-24 | |
A dash is an unsourced figure, not zero. Sources for each robot are listed on its spec sheet: K-Bot, ROBOTIS OP3.
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