OP3 vs U1
Humanoid robot spec comparison — ROBOTIS vs UBTECH.
ROBOTIS
OP3
44 / 100 Robo2u Score
Miniature 20-DoF open-source ROS humanoid from ROBOTIS (successor to DARWIN-OP)
UBTECH
U1
79 / 100 Robo2u Score
Full-size ultra-realistic companionship humanoid from UBTech with a lifelike appearance
| Spec | OP3 | U1 |
|---|---|---|
| Released | 2017 | 2026-06 |
| Status | Production | Pre-order |
| Height | 51 cm | — |
| Payload | — | — |
| Degrees of freedom | 20 | 88 |
| Runtime | 30 min | — |
| Top speed | 0.24 m/s | — |
| Price | $13.8k | $17.6k |
| Robo2u Score | 44 | 79 |
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.
