Forerunner K2 vs GR-3
Humanoid robot spec comparison — Kepler Robotics vs Fourier Intelligence.
Kepler Robotics
Forerunner K2
57 / 100 Robo2u Score
Industrial general-purpose humanoid with strong dexterous…
Fourier Intelligence
GR-3
54 / 100 Robo2u Score
Care-focused companion humanoid with cushioned surfaces and…
| Spec | Forerunner K2 | GR-3 |
|---|---|---|
| Released | 2024-10 | 2025-08 |
| Status | Production | Production |
| Height | 178 cm | 165 cm |
| Payload | 30 kg | 3 kg |
| Degrees of freedom | 52 | 55 |
| Runtime | 480 min | 180 min |
| Top speed | 1.1 m/s | — |
| Price | $30k | — |
| Robo2u Score | 57 | 54 |
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.
