Last year, Sony AI and Polyphony Digital, the developers of Gran Turismo, developed a new AI agent that is able to race at a world-class level. At the time, the experiment was described in a paper in Nature, where the researchers showed that this AI was not only capable of driving very fast—something other AI have done in the past—but also learned tactics, strategy, and even racing etiquette.
At the time, GT Sophy—the name of the AI—wasn’t quite ready for prime time. For example, it often passed opponents at the earliest opportunity on a straight, allowing itself to be overtaken in the next braking zone. And unlike human players, GT Sophy would try to overtake players with impending time penalties—humans would just wait for that penalized car to slow to gain the place.
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