Avant-garde artist Yayoi Kusama, whose work commands some of the highest prices of any living female artist, said on Tuesday that at age 88, she still fills her days painting and has no intention of slowing down.

Long known for her obsessive, dot-covered art and pumpkin motifs, as well as the use of mirrors to create mystical "Infinity Rooms," Kusama, whose exhibitions have been among the hottest tickets in the art world this year, is now opening a museum in downtown Tokyo dedicated to her paintings and sculptures.

But the diminutive Kusama, one of whose paintings sold for $7.1 million in 2014 — close to the record for a living woman artist — refuses to take it easy.