But Microsoft, OpenAI’s biggest investor, has decided not to take a chance on Mr Altman taking this tech elsewhere. He will be joining the Seattle-based tech giant, it has been announced, to lead a yet-to-be-created AI research team. His co-founder Greg Brockman goes with him, and judging from the number of staff members posting on X today, it looks like he’ll be taking some of OpenAI’s top talent too.