According to Official Guinness Records,
The fastest robot to solve a Rubik's Cube is “Sub1 Reloaded” with a time of 0.637 seconds, built by Albert Beer (Germany), and demonstrated at the Infineon booth at the electronica trade fair in Munich, Germany, 09 November 2016. The computer received two pictures of the cube, identified the color of each piece and calculated a solution with Tom Rokicki's extremely fast implementation of Herbert Kociemba's Two Phase Algorithm. The solution was handed over to an Arduino-compatible Infineon AURIX™ microcontroller board which orchestrated the 21 moves of six high performance steppers, to turn each side of the cube. The cube and the pre-scrambling met all WCA standards. Read more: Robot breaks world record solving Rubik's cube in 0.637 seconds
For a complete list of Unknown date records, please visit Unknown date Guinness Records in Germany.