Microsoft was once the exclusive provider of data center infrastructure for OpenAI to train and run its AI models. No longer. As part of Stargate, the company’s massive new infrastructure deal with SoftBank,

In late 2023, OpenAI’s board of directors unexpectedly fired Altman as CEO. Nadella played a central role in helping Altman return to his post, at one point publicly offering to hire Altman and departing members of OpenAI’s team to create an AI unit within Microsoft. Altman was reinstated as CEO within five days.