Elon Musk has sued OpenAI and its founders, Greg Brockman and Sam Altman, alleging they abandoned the company's initial goal of helping the public in favor of financial gain. Musk, a co-founder of OpenAI and an early backer, claims he was duped by Altman and others, which caused him to quit the board in 2018. They are accused in the complaint of renunciating the charitable idea that Musk first backed.