A method of controlling an artificial intelligence device may include receiving an operation command at a plurality of artificial intelligence devices; determining a first artificial intelligence device closest to a point-of-origin of an operation command based on the operation command being received at the plurality of artificial intelligence devices; outputting a response corresponding to the operation command through the first artificial intelligence device; determining a second artificial intelligence device that will perform an operation corresponding to the operation command, and transmitting a control command corresponding to the operation command to the second artificial intelligence device; and performing, by the second artificial intelligence device, an operation corresponding to the operation command based on the control command.