Yann LeCun, one of the founding figures of modern artificial intelligence and a pivotal force at Meta Platforms, said on Wednesday he plans to leave the company at the end of the year to launch a new AI start-up.LeCun has been a key part of Meta’s AI ambitions for more than a decade. He joined the company in 2013 to create Facebook AI Research (FAIR), the in-house lab that helped transform Meta into one of the AI leaders.Over 12 years, he served five as FAIR’s founding director and seven as...