Walker S2 vs AGIBOT A3 Ultra
Compare Walker S2 (UBTECH Robotics) and AGIBOT A3 Ultra (AGIBOT (Zhiyuan Robotics)) side by side: degrees of freedom, weight, payload, battery life, actuators, and status.
| Spec | Walker S2 | AGIBOT A3 Ultra |
|---|---|---|
| Manufacturer | UBTECH Robotics | AGIBOT (Zhiyuan Robotics) |
| Category | Humanoid | Humanoid |
| Country | China | China |
| Degrees of freedom | 52 | 51 |
| Weight (kg) | 70 | 60 |
| Battery life (h) | 2.5 | 8 |
| Payload | 15 kg | 5 kg per arm |
| Max speed | 2.0 m/s | 1.8 m/s |
| Actuators | High-Torque Brushless Servo Motors | |
| Primary sensor | 3D LiDAR + Depth Camera + IMU | 3D LiDAR + RGB-D cameras + fisheye cameras + binocular vision + GPS/RTK/UWB |
| Function | Assembly & manufacturing | Commercial and service humanoid for sustained real-world tasks |
| Released | 2025 | 2026 |
| Status | Active | Active |
Verdict
Walker S2 leads on 3 of the 4 weighted dimensions both makers disclose.
Walker S2 leads on degrees of freedom (52 vs 51), payload (15 kg vs 5 kg per arm) and max speed (2.0 m/s vs 1.8 m/s).
AGIBOT A3 Ultra leads on battery life (8 h vs 2.5 h).
Left out because at least one manufacturer does not publish a figure: price.
Walker S2
Industrial humanoid with Co-Agent AI and autonomous hot-swap battery system. Mass production began late 2025 with major automotive and logistics orders.
AGIBOT A3 Ultra
Full-size humanoid robot developed for long-duration operation in public-facing, commercial, and service environments. Standing 1.74 m tall and weighing 60 kg with 51 active degrees of freedom.