When selecting a humanoid robot, you must prioritize Degrees of Freedom (DoF), which determines the robot's agility; a high-end model typically features 20 to 50+ DoF. Evaluate the actuator technology, specifically the torque density and response speed of the servo motors. Additionally, verify the battery life and charging cycles, ensuring the power system supports at least 4-8 hours of continuous operation. For AI integration, check if the onboard computer supports ROS2 (Robot Operating System) and has sufficient TOPS (Tera Operations Per Second) for real-time computer vision and SLAM (Simultaneous Localization and Mapping).