Research suggests that the use of artificial intelligence (AI) in research submitted to medical journals is vastly underreported. Researchers from the BMJ/Maastricht University PhD program analyzed 25,114 research manuscripts submitted to 49 BMJ Group journals from April 8, 2024 to November 6, 2024. Only 5.7% (1431/25,114) of eligible papers reported the use of AI. This number is significantly lower than in previous surveys, where reported use ranged from 28% to 76%. A similar analysis published this week in JAMA found that 3.3% (3,459/105,538) of manuscripts contained statements about the use of AI. The results were published as a research paper in JAMA. These findings suggest under-reporting, which may reflect deliberate omission or uncertainty by the authors.