Microsoft is OpenAI's largest investor, with a 49% stake, translating to $14 billion. As part of its complicated partnership with the ChatGPT maker, Microsoft was once the exclusive cloud computing partner for OpenAI. However, OpenAI's $500 billion investment in computing infrastructure changes its relationship with Microsoft.

Microsoft will no longer be the exclusive provider of new cloud computing capacity to OpenAI — a new twist in their relationship that clears the way for OpenAI to work with Oracle and others on the $500 billion Stargate AI project announced by the companies Tuesday with President Trump at the White House.

On Tuesday, OpenAI, SoftBank, Oracle, and MGX announced plans to form Stargate, a new company that will invest $500 billion in AI computing infrastructure across the United States over four years. The announcement came during a White House meeting with President Donald Trump, who called it the "largest AI infrastructure project in history."