Which text is AI?

Click on the version you think is AI generated.

Ten news stories, each one shown twice: once as its author wrote it, once rewritten by a language model. You see three sentences from the middle of each version, so the opening and the sign-off give nothing away. Guessing scores five out of ten.

The stories are drawn at random from a set of 10,000 matched pairs. Your answers and your time on each one are recorded, and the round gets its own address at the end so you can send the result to someone.

The human text is sampled from The Verge.