Musk dropped the lawsuit but filed another one against Altman and OpenAI, this time elevating his accusations to claim OpenAI worked with Microsoft, an investor, to create a monopoly. The billionaire also alleged the company violated its founding claim as a nonprofit by pursuing profit. OpenAI has denied the allegations.

In his letter, Musk’s lawyer pushed the attorneys general to allow outside investors to bid for the nonprofit’s stake in OpenAI. If successful, that could allow an outside investor to take a significant position in, and to exercise control over, the start-up.

OpenAI Whistleblower Suchir Balaji's mother has claimed that her son wasn't okay with OpenAI becoming for-profit; Elon Musk has reacted to that interview.