The fastest average time to solve a 4x4x4 rotating puzzle cube is 19.38 seconds, achieved by Max Park (USA) at the Arizona Speedcubing Spring 2023 event in Phoenix, Arizona, USA, on 19 March 2023.
Max recorded times of (17.60), 18.49, 19.37, (23.80) and 20.28, with the fastest and the slowest times discounted from the average as per World Cube Association rules.
Max currently also holds the record for fastest single solve of a 4x4x4 cube: 16.79 seconds, set in San Jose, California, USA, on 3 April 2022.