Gian Giacomo Caprotti da Oreno, better known as Salaì ("The Devil", lit. "The little unclean one") (1480 – before 10 March 1524), was an Italian artist and pupil of Leonardo da Vinci from 1490 to 1518. Salai entered Leonardo's household at the age of 10. He created paintings under the name of Andrea Salai. He was described as one of Leonardo's students and lifelong servant and is the presumed model for Leonardo's paintings St. John the Baptist and Bacchus.