Any publisher of a book in New York that was created in whole or in part using generative AI must place a conspicuous disclosure on the cover of the book stating that AI was used in its creation. This applies to all printed and digital books — regardless of audience or age group — including those consisting of text, pictures, audio, puzzles, games, or any combination. The definition of generative AI is extremely broad, encompassing virtually any machine learning, neural network, or automated system that performs cognitive tasks or learns from data. The bill does not specify the exact wording of the disclosure, only that it must be conspicuous and appear on the cover. It also does not define what degree of AI involvement constitutes 'partially created,' leaving significant ambiguity about whether incidental AI use (e.g., grammar checking, formatting assistance) would trigger the requirement.