AlexNet, created by Alex Krizhevsky, Sutskever and Geoffrey Hinton, used a deep convolutional neural network (CNN)—a powerful new type of computer program—to recognize images far more accurately than ever, kick-starting major progress in AI.

The billionaire, a key adviser to Donald Trump, didn’t explain his change of position but his post came hours after comments from Nigel Farage.

Elon Musk has said Nigel Farage “doesn’t have what it takes” to lead Reform UK, just weeks after the pair had a “great” meeting in the US. The owner of Tesla and X – the social media site formerly known as Twitter – met with Mr Farage in December at US President-elect Donald Trump ’s Mar-a-Lago resort, which Mr Farage described as “historic”.