However, Sam Altman had a lot of approval among key members of the company. Several lobbied for Altman to return to his position, which happened shortly after. Microsoft, which has invested billions in OpenAI, also lobbied for Altman’s return as CEO.

Britain's competition watchdog said Wednesday it has dropped its review of Microsoft's partnership with OpenAI, saying it's satisfied that the deal doesn't need a closer investigation under the country's merger rules.

The UK competition watchdog has ended its investigation into the partnership between Microsoft and the maker of ChatGPT, OpenAI. The Competition and Markets Authority (CMA) was looking into whether Microsoft's relationship with what is the world's best known artificial intelligence (AI) firm changed after the turmoil which saw its boss Sam Altman fired and then rehired.