The HopeJR vs Rainbow Robotics RB-Y1
Generated from the registry · revision 2026-09-26 · openness out of 100
HopeJR has 46 more degrees of freedom (66 vs 20) than Rainbow Robotics RB-Y1. Openness score: HopeJR 90, Rainbow Robotics RB-Y1 30 (of 100); only HopeJR publishes CAD, BOM and FW. Availability: HopeJR diy build, Rainbow Robotics RB-Y1 buy.
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Side by side
■ rows differ| Field | The Robot Studio & Hugging FaceThe HopeJR | Rainbow RoboticsRainbow Robotics RB-Y1 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | The Robot Studio & Hugging Face | Rainbow Robotics | |
| Class (differs) | Humanoid | Wheeled humanoid | |
| Status | Active | Active | |
| Availability (differs) | DIY build | Buy | |
| Country (differs) | France | South Korea | |
| Year (differs) | 2025 | 2024 | |
| Specifications | |||
| Height | —unsourced | 140cm | |
| Mass | —unsourced | 131kg | |
| Degrees of freedom (differs) | 66 | 20 | +46 (+230%) |
| Payload | —unsourced | 3kg | |
| Top speed | —unsourced | 1.5m/s | |
| Runtime | —unsourced | —unsourced | |
| Battery capacity | —unsourced | 1,250Wh | |
| Price | 3,000USD | —unsourced | |
| Actuators (differs) | Robstride 02 (humanoid body update) | Rainbow in-house joint modules | |
| Compute | —unsourced | Dual-PC (real-time robot PC + user PC with ROS 2) | |
| Sensors | —unsourced | Built-in wrist force/torque sensors (v1.2); optional camera | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 90/ 100 | 30/ 100 | +60 |
| CAD (25) (differs) | public | not public | |
| Bill of materials (20) (differs) | public | not public | |
| Sim model (URDF/MJCF) (20) | public | public | |
| Firmware (15) (differs) | public | not public | |
| Software (10) | public | public | |
| Trained policies (10) | not public | not public | |
| Verification level (differs) | L1 | L2 | |
| Sources (differs) | 4 | 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: HopeJR, Rainbow Robotics RB-Y1.
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