Sony has announced Gran Turismo Sophy, an artificial intelligence built in collaboration between Sony AI, Polyphony Digital, and the cloud gaming team at Sony Interactive Entertainment.
Revealed as part of the Race Together Media Event, Sony claims that the new artificial intelligence, which has been trained using Gran Turismo Sport, can race competitively against the best Gran Turismo players in the world.
In development tests, Gran Turismo Sophy was pitted against four of the world's best Gran Turismo Sport players across two separate events, one in July 2021 and a second in October 2021. The first test saw Sophy score 70 points across three different races, while the human team scored 86. After a few months of training, Gran Turismo Sophy was able to score 104 points in a second round of tests, versus the human team's score of 52. Sophy won every race in this second test, and set the best lap time.
Sophy is trained through a deep reinforcement learning system, using Sony Interactive Entertainment's cloud gaming infrastructure. The system trains the AI in three areas: Physical Realism, which teaches Sophy to control a car and exploit features of track, Realtime Race Tactics, which coaches the AI to master passing and optimise its use of the racing line, and Sports Etiquette, which trains Sophy to drive aggressive but fairly.