Bittle X vs RIVR TWO
Quadruped robot spec comparison — Petoi vs RIVR.
Petoi
Bittle X
47 / 100 Robo2u Score
Palm-sized open-source robot dog with voice control and coding in Python, C++ or Scratch
RIVR
RIVR TWO
80 / 100 Robo2u Score
Second-gen wheeled-legged quadruped for autonomous last-mile delivery right to the doorstep
| Spec | Bittle X | RIVR TWO |
|---|---|---|
| Released | 2023 | 2026-03 |
| Status | Production | Deployed |
| Payload | 0.45 kg | 27 kg |
| Weight | 0.29 kg | — |
| Degrees of freedom | 9 | — |
| Runtime | 60 min | — |
| Top speed | 0.4 m/s | 3.89 m/s |
| Price | $299 | — |
| Robo2u Score | 47 | 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.
