Some investors in OpenAI, the creator of ChatGPT, are exploring legal recourse against the company's board, sources familiar with the matter have told the Reuters news agency, after the directors removed CEO Sam Altman and sparked a potential mass exodus of employees. Sources said investors are working with legal advisers to study their options. It was not immediately clear if these investors will sue OpenAI. Investors worry they could lose hundreds of millions of dollars they invested in OpenAI, a crown jewel in some of their portfolios, with the potential collapse of the hottest startup in the rapidly growing generative AI sector. OpenAI did not respond to a request for comment.

OpenAI's investors are making efforts to bring back Sam Altman, the chief executive who was ousted Friday, said people familiar with the matter, the latest development in a fast-moving chain of events at the artificial-intelligence company behind ChatGPT. Altman is considering returning but has told investors that he wants a new board, the people said. He has also discussed starting a company that would bring on former OpenAI employees, and is deciding between the two options, the people said.