OAKLAND, Calif. (AP) — Lawyers for Elon Musk and OpenAI began closing arguments Thursday in the landmark trial whose outcome could shape the future of artificial intelligence. Musk, the world’s richest man, was a co-founder of OpenAI, the company that launched in 2015 and went on to create ChatGPT. After Musk invested $38 million in its first years, his lawsuit filed in 2024 accused OpenAI CEO Sam Altman and his top deputy of shifting into a moneymaking mode behind his back. One of the jury’s tasks is to decide if Musk filed his lawsuit in time. Much of the testimony has centered on OpenAI’s early years after its 2015 founding, but there’s a relatively short timeline to allege the claims Musk is making of breach of charitable trust and unjust enrichment. OpenAI has argued that Musk waited too long and cannot claim harms that occurred before August 2021.…