Racing master game release date3/26/2023 ![]() ![]() These skills make it different from other AI breakthroughs in this space. “The agent Gran Turismo Sophy has to master different skills. “And that breakthrough is actually training, or reinforcement, for any agent to drive competitively against the best human drivers in Gran Turismo.” The challenge of making it real Can you beat an AI driver trained to have the best skills? “Exactly one year ago, we had a very big scientific breakthrough,” Spranger said. Sony AI has about 120 employees working on AI projects in Japan, Switzerland and North America. It collaborated with Sony Interactive Entertainment’s infrastructure teams on that. The company used a cloud infrastructure for training the agents to scale the experience that agents have. Designing the training took a couple of years, but the actual training took about two weeks or so with 20 PlayStation 5 consoles, Wurman said. Reinforcement training is a trial-and-error process. And this is really the first time I think that we were able to show the superhuman simulations in the real world, as it is a very real physical simulation.” “There is also an academic research community working on autonomous racing and so on. There may be other ways of approaching this,” Wurman said. “Reinforcement learning has unlocked the potential for this application. With today’s computing power, these networks can be trained to learn tasks and improve over time. That general trend has unlocked many potential applications for deep learning neural network AI that wasn’t previously possible for apps such as computer vision. Neural networks started working well about a decade ago, incorporating graphics processing unit (GPU) technology to handle AI processing. AI reinforcement training Sony AI and Polyphony Digital went from a Nature paper to a commercial release in a year. “If you do it really well and they go wide, you can cut on the inside and then pass,” he said. A good driver might draft in a slipstream behind a racer, gaining additional speed, and wait for the chance to pass, either on the inside or outside. The tough part is when cars are evenly matched, you might try to hold a driving line and beat the other car by blocking the path forward while going around a curve. “In order to create a real racing experience, it’s very important that the AI really has the same access to the physics and it’s not like some privileged access, where you can sort of go around the corner faster than you might ever do.” Suddenly, this car, which was very slow before, comes up behind me within a matter of a few seconds,” Spranger said. “People are not stupid, right? So if you cheat, people will notice. Yamauchi worked with Sony AI on this project, which is more ambitious in its goals.įor aficionados of racing games, the use of cheats to fake the intelligence of AI is easily detected. Yamauchi has focused the game on realism for its entire history and he is still working on it today. This is not to say that the game’s past AI was bad. Kazunori Yamauchi, creator of the franchise and CEO of Polyphony Digital, is basically a racing fanatic who wants the game to be real. But in Gran Turismo, the AI has access to the same physics of the game as a human. Spranger said that traditional AI in games probably had cheats that the developers used to make the racing more exciting for players. “It involves technical challenges on driving of course but also dealing with the balance between being assertive and aggressive in the sense of trying to pass but also adhering to the rules of sportsmanship.” “The overall challenge was to train an AI agent that could race against the best players in the world and beat them,” Wurman said. And it is a combo of Sony and Polyphony Digital. Sophy is named after Sophia, the Greek word for wisdom. And it’s not nearly fast enough for really good (human) drivers.” A modern AI approach Gran Turismo Sophy works with multiple tracks. So it’s trying to hit certain speeds at certain points,” said Peter Wurman, director of Sony AI America and project lead on GT Sophy, in an interview with GamesBeat. “Prior AI, which has been mostly the same for the last 20 years, tries to follow a line and a particular trajectory. But this kind of AI is different and more adaptive to the racing situation. A history of so-so AI GT Sophy is on the track to beat human drivers.ĪI is nothing new to racing, as it’s been around for the whole 25-plus year history of the Gran Turismo racing franchise, as players race against AI-driven cars. The special mode, available as a time-limited in-game event, is a first look at GT Sophy in GT7 and is designed to maximize the fun and excitement of racing against GT Sophy for everyone. Gran Turismo Sophy Race Together is a new mode gives Gran Turismo players of all levels and abilities the opportunity to go head-to-head against GT Sophy in GT7.
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