What is Elon Musk, Sam Altman dispute behind OpenAI's trial?

Elon Musk and Sam Altman's legal battle in OpenAI trial will begin on Tuesday. The case centres on Musk's claim that OpenAI has strayed from its founding purpose of building AI for the public good. OpenAI denied allegations, saying Musk had at one point considered integrating it into Tesla. It also said Musk's $38 million contribution was donation, not investment.