GR-3 vs Iron 2
Humanoid robot spec comparison — Fourier Intelligence vs XPENG.
Fourier Intelligence
GR-3
67 / 100 Robo2u Score
Care-focused companion humanoid from Fourier Intelligence with cushioned surfaces
| Spec | GR-3 | Iron 2 |
|---|---|---|
| Released | 2025-08 | 2025-11 |
| Status | Production | Prototype |
| Height | 165 cm | 178 cm |
| Payload | 3 kg | — |
| Degrees of freedom | 55 | 82 |
| Runtime | 180 min | — |
| Top speed | — | 2 m/s |
| Price | — | — |
| Robo2u Score | 67 | 61 |
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.
