Analysis: ChatGPT updates citations the same way Google reshuffles search rankings
A model update to ChatGPT reshuffled nearly half of all source citations in German-language answers within 48 hours, behaving like a Google core update for generative AI. Johannes Beus reports for Sistrix that the switch from GPT-5 mini to GPT-5.5 on 23 May 2026 caused a 47 percent shift in which domains ChatGPT cited, based …