In May 2013, Duda achieved his final norm required for the title of Grandmaster, in the European Individual Championship, at the age of 15 years and 21 days. This made him the second youngest grandmaster in the world at the time. Duda also thus became the second youngest Polish grandmaster ever, after Dariusz Świercz. In April 2013, he came first in the First Saturday GM tournament in Budapest. In August, Duda took part as a FIDE presidential nominee in the FIDE World Cup, where he was eliminated in the first round by Vassily Ivanchuk. In October, FIDE officially awarded him the title of Grandmaster. In August 2014, Duda played for the Polish team at the 41st Chess Olympiad in Tromsø, Norway, scoring 8.5/11 on board three.