We study how the interaction between human professionals and AI in advancing knowledge, using professional Go matches from 2003 to 2021. In 2017, an AI-powered Go program (APG) far surpassed the best human player, and professional players began learning from AI. Such human–AI interaction paved a new way to reassess historical Go knowledge and create new knowledge. We analyze standard patterns (defined as a sequence of the first eight alternating moves) in about 15 million moves by over 1,700 players in nearly 70,000 professional Go games and find that, after APG, professional players significantly changed how they adopted different sets of moves. However, new knowledge catalyzed by AI comes at the expense of a reduced diversity in moves. Further, AI's impact on knowledge creation is greater for highly skilled players; since AI does not explain, learning from AI requires the absorptive capacity of the top professionals.