HUBO-2 Plus vs Fourier GR-3
Compare HUBO-2 Plus (Rainbow Robotics) and Fourier GR-3 (Fourier) side by side: degrees of freedom, weight, payload, battery life, actuators, and status.
| Spec | HUBO-2 Plus | Fourier GR-3 |
|---|---|---|
| Manufacturer | Rainbow Robotics | Fourier |
| Category | Humanoid | Humanoid |
| Country | South Korea | China |
| Degrees of freedom | 41 | 43 |
| Weight (kg) | 60 | 71 |
| Battery life (h) | 2 | 3 |
| Payload | 10 kg | About 3 kg per arm |
| Max speed | 1.2 m/s | 6.1 km/h |
| Actuators | Cable-Driven Joint Actuators | Fourier actuators (peak joint torque 440 N·m) |
| Primary sensor | Stereo Camera + IMU + Force Sensors | Monocular camera + 6-axis IMU |
| Function | Research & development | Healthcare & assistance |
| Released | 2011 | 2025 |
| Status | Active | Active |
Verdict
Fourier GR-3 leads on 3 of the 4 weighted dimensions both makers disclose.
HUBO-2 Plus leads on payload (10 kg vs About 3 kg per arm).
Fourier GR-3 leads on degrees of freedom (43 vs 41), max speed (6.1 km/h vs 1.2 m/s) and battery life (3 h vs 2 h).
Left out because at least one manufacturer does not publish a figure: price.
HUBO-2 Plus
Commercialized KAIST HUBO platform with Samsung's 35% stake. DARPA Robotics Challenge winner lineage. Used by research labs worldwide including MIT and Google.
Fourier GR-3
Fourier's first “care-bot” humanoid, designed for interactive companionship with soft covering materials and a moderate height. About 71 kg and 164 cm, with a hot-swappable battery and about 3 h runtime per Fourier's developer documentation.