Microsoft’s absence from OpenAI’s Stargate announcement follows months of tension between the companies and signals a new era in which the longtime partners will be less reliant on each other. At a White House press conference,

OpenAI and Microsoft have hit back at Elon Musk’s criticism of Stargate, the new $500bn artificial intelligence infrastructure project hailed by Donald Trump as a “resounding declaration of confidence in America’s potential under a new president”.