B2-W vs Spirit 40
Quadruped robot spec comparison — Unitree vs Ghost Robotics.
Unitree
B2-W
74 / 100 Robo2u Score
Wheeled-leg industrial quadruped blending rolling speed with legged all-terrain mobility
| Spec | B2-W | Spirit 40 |
|---|---|---|
| Released | 2024-12 | 2020 |
| Status | Production | Production |
| Payload | 40 kg | 3 kg |
| Weight | 85 kg | 12 kg |
| Degrees of freedom | 12 | 12 |
| Runtime | 300 min | — |
| Top speed | 5.56 m/s | 2 m/s |
| Price | — | — |
| Robo2u Score | 74 | 47 |
Highlighted = better on that spec (lower is better for price and weight; newer for release). The Robo2u Score is a transparent composite — see the Quadruped Robots for the full field.
