AI art, promtography, or whatever you want to call it, remains controversial and something of a legal and commercial grey area. Many people hate it – as shown in the reaction to the Coca-Cola AI Christmas ad. But can we really tell the difference?

A recent study aimed to find out. Some 11,000 participants looked at 50 images and decided whether each one was created by AI image generator or a real human. They were also asked which image they preferred. The results were surprising. Take the two images above, or those below, for example. Can you tell which is AI?