Round-by-round individual prize money for the US Open is as follows:
Singles:
Winner: $2,500,000
Runner-Up: $1,250,000
Semifinalist: $675,000
Quarterfinalist: $425,000
Round of 16: $265,000
Round of 32: $180,000
Round of 64: $115,000
Round of 128: $75,000
Doubles (each team):
Winner: $660,000
Runner-Up: $330,000
Semifinalist: $164,000
Quarterfinalist: $93,000
Round of 16: $54,000
Round of 32: $34,000
Round of 64: $20,000