Tim Cook is a legend: OpenAI CEO Altman as Apple CEO steps down

OpenAI CEO Sam Altman reacted after Apple announced that Tim Cook will step down as Apple's CEO and will become executive chairman of Apple's board of directors effective on September 1. "Cook is a legend. I am very thankful for everything he has done and I am very thankful for Apple," Altman said. John Ternus will become Apple's next CEO.