K1 vs RB-Y1
Humanoid robot spec comparison — Booster Robotics vs Rainbow Robotics.
Rainbow Robotics
RB-Y1
48 / 100 Robo2u Score
Wheeled dual-arm humanoid manipulator for AI research labs
| Spec | K1 | RB-Y1 |
|---|---|---|
| Released | 2025-10 | 2024-05 |
| Status | Production | Production |
| Height | 95 cm | 140 cm |
| Payload | — | 6 kg |
| Degrees of freedom | 22 | 24 |
| Runtime | 80 min | 180 min |
| Top speed | 0.4 m/s | 1.5 m/s |
| Price | $12.5k | $80k |
| Robo2u Score | 54 | 48 |
Highlighted = better on that spec (lower is better for price and weight; newer for release). The Robo2u Score is a transparent composite — see the Humanoid Showdown for the full field.
