As2 vs B2-W
Quadruped robot spec comparison — Unitree vs Unitree.
Unitree
As2
77 / 100 Robo2u Score
Compact 18 kg IP54 quadruped carrying 15 kg on the move with over four hours of unloaded runtime
Unitree
B2-W
74 / 100 Robo2u Score
Wheeled-leg industrial quadruped blending rolling speed with legged all-terrain mobility
| Spec | As2 | B2-W |
|---|---|---|
| Released | 2026-02 | 2024-12 |
| Status | Production | Production |
| Payload | 15 kg | 40 kg |
| Weight | 18 kg | 85 kg |
| Degrees of freedom | 12 | 12 |
| Runtime | 240 min | 300 min |
| Top speed | 5 m/s | 5.56 m/s |
| Price | $3.1k | — |
| Robo2u Score | 77 | 74 |
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.
