Armand Duplantis cleared 6,30 in his third and final attempt. His previous world record was 6,29.
He secured the victory in Tokyo with a jump over 6,15 meters. The Greek Emmanouil Karalis took silver after he and Duplantis were the only ones to clear 6,00. The Australian Kurtis Marschall took bronze on 5,95.
The 25-year-old Swedish-American has now taken seven consecutive outdoor championship golds and has set 14 world records.