AI chatbots 'hallucinate' a research paper that doesn't exist

US researchers describe a weird case in which Google's Bard artificial intelligence (AI) chatbot 'hallucinated' a research paper that doesn't exist. Dr Hayley Born was using Bard to help prepare a presentation, and asked the chatbot to find references for the information it provided. On double-checking the reference, she could find no trace of the article, titled 'Telemedicine for the management of airway stenosis' and claimed by Bard to have been published in a genuine journal, Expert Review of Respiratory Medicine. She then asked Bard to summarise the phantom article, which it quickly did. Unable to find it after further searches, she asked Bard “Does this paper actually exist?”. The chatbot responded: “I apologise for the mistake. I have double-checked, and the paper ‘Telemedicine for the management of airway stenosis by Thomas et al (2022)’ does not exist. I am still under development, and I am always learning. I will try my best to avoid making similar mistakes in the future.” Dr Born then turned to another chatbot, Microsoft's Pilot, which claimed, erroneously, to have found the non-existent article, and even provided an abstract - the short summary at the beginning of a scientific paper. The story highlights the importance of double or even triple-checking everything chatbots say, the authors conclude.