Over the last few years, Sony and Polyphony Digital have been testing and refining Sophy against professional Gran Turismo players. In July 2021, Sophy went against the top Gran Turismo drivers, and the AI registered the best lap times across all three race events. However, the GT Top Driver Team claimed victory over the GT Sophy Team with an ultimate score of 86 to 70.
The AI would again made an appearance at the Gran Turismo World Series 2022 (GTWS 2022) Showdown Event and the Gran Turismo World Series 2022 World Finals, where it went up against the world’s four best Gran Turismo players. In a paper published in Nature, the team behind Sophy concluded that “it is possible to train AI agents that are better than the top human racers across a range of car and track types.” However, there are still a few key areas covering strategic decision-making where Sophy needed to improve, including making risky maneuvers.
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