Musk cofounded OpenAI in 2015 with Sam Altman and Greg Brockman, as a non-profit lab to develop AI for humanity's benefit, with open research publication. Musk's suit, filed in California in early 2024, claims that he contributed over $40 million to the AI company, expecting it to stay non-profit and open-source. He alleges that the company went against the founding principles when it formed a for-profit arm and partnered closely with Microsoft.