Sam Altman, former CEO of OpenAI, was fired due to a 'lack of communication' with the board and his unchecked desire for progress. Altman had been teasing a breakthrough in AI technology and was working on an ambitious chip venture called Tigris. OpenAI's investors, including Microsoft and Thrive Capital, are reportedly trying to reinstate Altman as CEO. Altman's dismissal was a surprise to many in Silicon Valley, and several other high-ranking employees at OpenAI resigned in response.