Determining the "smartest" robot is subjective and depends on various factors like intelligence metrics, capabilities, and specific tasks. 

Sophia (Hanson Robotics)  Known for its human-like appearance and ability to engage in conversations.

Digit (Agility Robotics)  Designed for commercial use, Digit excels in mobility and package handling.

Ameca (Engineered Arts)  A highly realistic humanoid with advanced facial expressions and interactive capabilities.

Spot (Boston Dynamics)  A quadruped robot with impressive mobility and adaptability to various environments.

Da Vinci Surgical System  While not a traditional robot, it's a highly advanced robotic system used in minimally invasive surgeries

Roomba (iRobot)  A household staple, Roomba demonstrates advanced navigation and cleaning capabilities.

Drones  Various drones showcase impressive intelligence, from autonomous flight to package delivery.

Industrial Robots Built for precision and efficiency, industrial robots are programmed machines capable of complex tasks in manufacturing.