The robot developed in Taiwan called BeRobot, seems to set the current world record by being the smallest humanoid robot commercially available.The robot is only 6” tall, can be disassembled and reassembled into different configurations such as animals, has updateable software, has bluetooh or mobile phone control, ultrasonic and image sensors. For more, click the link below:

Reference: worldrecordsacademy.org/technology/smallest_humanoid_robot-world_record_set_by_the_BeRobot_80362.htm