Mass production
Unitree
G1
Unitree's second humanoid robot and first small-scale model, launched on May 13, 2024 and billed by the compan…
Height132 cm
Degrees of freedom23
Arm payload2 kg
ResearchIndustrial
CN¥99,000
ROBOTIS OP3 official imageImage source ↗
ROBOTIS OP3
ROBOTIS's 51 cm, 20-DOF open-source humanoid for research and robotics education.
Mass productionVerified Last verified 31 Oct 2026
Height51 cm
Degrees of freedom20
Arm payload—
Top speed—
Battery life—
Starting pricePrice on request
What it is
The ROBOTIS OP3 is a miniature open-source humanoid built around 20 XM430-W350 DYNAMIXEL servos. At 51 cm and 3.5 kg it carries an Intel NUC i3, a Logitech C920 camera and an OpenCR controller, and runs ROS. It is sold as a research and education platform and is a common base for robot-soccer and legged-locomotion experiments.
Highlights
0120 degrees of freedom driven by XM430-W350-R DYNAMIXEL servos.
0251 cm and 3.5 kg with an Intel NUC i3 and OpenCR controller.
03ROS-supported open-source software stack.
04Listed by ROBOTIS at US$11,969.
05Used for research, education and robot-soccer projects.
The numbers
Body
| Height | 51 cm |
|---|---|
| Weight | 3.5 kg |
| Form factor | Compact |
Motion & power
| Locomotion | Bipedal |
|---|---|
| Degrees of freedom | 20 |
| Actuators | 20 x XM430-W350-R servos. |
Compute, sensing & hands
| Compute | Intel NUC i3 with 8 GB RAM and 250 GB SSD, plus an OpenCR sub-controller. |
|---|---|
| Sensing | Logitech C920 HD camera, IMU and DYNAMIXEL position/current feedback. |
| Hands | None as standard. |
Platform & deployment
| Availability | Commercially available |
|---|
Evidence trail
Claims on this profile are linked to primary reporting and manufacturer material where available.
Specifications are sourced from public materials and may change. Always confirm commercial terms with the manufacturer.
Pilot deployment
UBTECH
Walker X
UBTech's next-generation large humanoid service robot, globally unveiled at WAIC 2021 in Shanghai on July 7, 2…
Height130 cm
Degrees of freedom41
Arm payload3 kg
HomeResearch
Price on request
Pilot deployment
Unitree
H2
Unitree's fourth humanoid robot and second full-size model after the H1, launched on October 20, 2025 and desc…
Height182 cm
Degrees of freedom31
Arm payload7 kg
IndustrialService & retail
CN¥199,000
Mass production
Figure AI
Figure 03
Figure 03 was officially launched on October 9, 2025, the same day as its TIME Best Inventions cover, and is F…
Height173 cm
Degrees of freedom—
Arm payload—
Research
Price on request