B2 vs RIVR TWO
Quadruped robot spec comparison — Unitree vs RIVR.
RIVR
RIVR TWO
80 / 100 Robo2u Score
Second-gen wheeled-legged quadruped for autonomous last-mile delivery right to the doorstep
| Spec | B2 | RIVR TWO |
|---|---|---|
| Released | 2023-11 | 2026-03 |
| Status | Production | Deployed |
| Payload | 40 kg | 27 kg |
| Weight | 60 kg | — |
| Degrees of freedom | 12 | — |
| Runtime | 240 min | — |
| Top speed | 6 m/s | 3.89 m/s |
| Price | $100k | — |
| Robo2u Score | 74 | 80 |
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.
