RB-Y1 vs Z-Bot
Humanoid robot spec comparison — Rainbow Robotics vs K-Scale Labs.
Rainbow Robotics
RB-Y1
48 / 100 Robo2u Score
Wheeled dual-arm humanoid manipulator for AI research labs
| Spec | RB-Y1 | Z-Bot |
|---|---|---|
| Released | 2024-05 | 2025 |
| Status | Production | Pre-order |
| Height | 140 cm | 46 cm |
| Payload | 6 kg | — |
| Degrees of freedom | 24 | 18 |
| Runtime | 180 min | — |
| Top speed | 1.5 m/s | — |
| Price | $80k | $999 |
| Robo2u Score | 48 | 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.
