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Engine AI PM01 vs Unitree G1: Which Humanoid Robot is Better?

Engine AI PM01 vs Unitree G1: Which Humanoid Robot is Better?

The rapid advancement in humanoid robotics has led to the emergence of more affordable models, notably the Engine AI PM01 and the Unitree G1. Both robots aim to make humanoid robotics accessible, but they differ in several key aspects. This article provides a detailed comparison to help potential users make an informed decision.

Design and Dimensions

The Engine AI PM01 stands at 1.38 meters (4 feet 5 inches) and weighs approximately 40 kilograms (88 pounds). In contrast, the Unitree G1 is slightly shorter at 1.32 meters (4 feet 3 inches) and lighter, weighing around 35 kilograms (77 pounds). Both robots are constructed using aluminum alloy frames, ensuring durability while maintaining a lightweight structure.

Mobility and Gait

Both the PM01 and G1 achieve walking speeds of up to 2 meters per second (4.4 miles per hour). However, the PM01's walking gait is notably more natural and human-like, attributed to its advanced motion capture technology and neural network integration. This design allows the PM01 to replicate human movements with remarkable accuracy, enhancing its adaptability across diverse environments. While the G1 also exhibits a commendable gait, it lacks the refinement seen in the PM01.

Dexterity and Manipulation

The PM01 is equipped with a five-fingered hand that closely mimics human motion, providing enhanced dexterity for intricate tasks. The Unitree G1 comes standard with a three-fingered dexterous hand but offers an option to upgrade to a five-fingered version, allowing users to customize based on their specific requirements.

Joint Torque and Payload Capacity

A significant differentiator is the robots' joint torque capabilities. The PM01's knee joint delivers a maximum torque of 300 Newton-meters, substantially higher than the G1's 90 Newton-meters. This higher torque translates to a greater payload capacity for the PM01, making it more versatile for demanding tasks.

Sensors and Perception

Both robots utilize Intel RealSense depth cameras for navigation and environmental perception. The PM01 employs the D435i model, which includes an inertial measurement unit (IMU), enhancing its spatial awareness. The G1 uses the D435 model but compensates with a LiDAR sensor mounted in its head, providing a comprehensive field of view.

Computing Power

The PM01 is equipped with an x86 architecture and NVIDIA Jetson Orin high-performance modules, supporting cross-platform algorithm deployment and application development. The Unitree G1 features an eight-core high-performance CPU, which, while sufficient for many applications, offers a lower ceiling for complex tasks compared to the PM01's advanced computing suite.

User Interaction and Interface

A standout feature of the PM01 is its interactive core display, inspired by Iron Man's design. This screen allows users to issue commands and access information intuitively, enhancing user experience. The G1 lacks a comparable interface, which may limit direct user interaction.

Battery Life

The Unitree G1 is equipped with a 9,000 mAh battery, providing a runtime of approximately two hours. The PM01 features a slightly larger 10,000 mAh battery, though its exact runtime is not specified.

Price Point

Affordability is a crucial factor for many users. The PM01 is priced at approximately $12,000, making it more accessible than the Unitree G1, which is priced around $16,000.

Conclusion

Both the Engine AI PM01 and Unitree G1 represent significant strides in making humanoid robots more accessible. The PM01 offers a more natural gait, higher joint torque, advanced computing capabilities, and a user-friendly interactive display, all at a lower price point. The Unitree G1, while slightly more expensive, provides flexibility in hand configurations and incorporates LiDAR for enhanced perception. Prospective buyers should consider their specific needs and applications when choosing between these two models.

For a visual comparison and more insights, watch the video above.

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