Cruzr S2 vs Forerunner K2
Humanoid robot spec comparison — UBTECH vs Kepler Robotics.
UBTECH
Cruzr S2
69 / 100 Robo2u Score
Full-size wheeled service humanoid with a ±170° bending torso and 15kg payload handling
Kepler Robotics
Forerunner K2
84 / 100 Robo2u Score
Industrial general-purpose humanoid from Kepler Robotics with strong dexterous manipulation
| Spec | Cruzr S2 | Forerunner K2 |
|---|---|---|
| Released | 2025 | 2024-10 |
| Status | Production | Production |
| Height | 176 cm | 178 cm |
| Payload | 15 kg | 30 kg |
| Degrees of freedom | 44 | 52 |
| Runtime | — | 480 min |
| Top speed | 2 m/s | 1.1 m/s |
| Price | — | $30k |
| Robo2u Score | 69 | 84 |
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.
