On Wednesday, Musk said at the AI Safety Summit in the United Kingdom that advanced AI models were among the biggest threats to humanity.
"There is a case to believe it [AI] may pose a risk on a scale like pandemics and nuclear war. And that's why, as leaders, we have a responsibility to act, to take the steps to protect people," Sunak told reporters ahead of the second day of the summit at Bletchley Park.
At the same time, it is important not to be "alarmist" about the technology, the prime minister added.