The artificial intelligence chatbot Grok made several errors over the past few weeks when asked to verify information on the X platform. In one instance, it miscaptioned video of a 2021 altercation involving hospital workers in Russia as taking place in Toronto a year earlier. In the other, it claimed multiple times Mark Carney “has never been Prime Minister.”

A computer scientist says AI chatbots “hallucinate” false information because they are not built to verify facts, but rather predict the next word in a sentence, and says there is an overconfidence among users who rely on chatbots to verify information despite their unreliability.

THE CLAIMS

“Mark Carney has never been Prime Minister,” the artificial intelligence chatbot Grok wrote in several responses to users on the X plat

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