A Le Mans Hypercar (LMH) is a type of sports prototype race car that competes alongside LMDh entries in the Hypercar class of the FIA World Endurance Championship. It will also compete in the Grand Touring Prototype (GTP) class of the IMSA SportsCar Championship from 2023.[1]
The Le Mans Hypercar regulations were created jointly by the Automobile Club de l'Ouest (ACO) and the Fédération Internationale de l'Automobile (FIA) as a successor to the Le Mans Prototype 1 (LMP1) from the 2021 season onwards.[2]
GTP
was invoked but never defined (see the help page).