Phantom MK1 vs RB-Y1
Humanoid robot spec comparison — Foundation vs Rainbow Robotics.
Foundation
Phantom MK1
60 / 100 Robo2u Score
Industrial humanoid from Foundation using proprietary cycloidal actuators
Rainbow Robotics
RB-Y1
62 / 100 Robo2u Score
Wheeled dual-arm humanoid manipulator for AI research labs
| Spec | Phantom MK1 | RB-Y1 |
|---|---|---|
| Released | 2025 | 2024-05 |
| Status | Prototype | Production |
| Height | 175 cm | 140 cm |
| Payload | 20 kg | 6 kg |
| Degrees of freedom | — | 24 |
| Runtime | — | 180 min |
| Top speed | 1.7 m/s | 1.5 m/s |
| Price | $100k | $80k |
| Robo2u Score | 60 | 62 |
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.
