The authors thank Yuyan Wang and Yuting Zhu for detailed feedback that has improved the paper. The authors also thank the participants of the China India Insights Conference 2024, HKU Marketing Camp 2024, Informs Marketing Science 2024, QME 2024, USC Marketing seminar, and UW–UBC Conference 2024 for feedback. The code used in this study is publicly available at LLM News Github Repository (https://github.com/DDDOH/LLM_News) to enable the reproduction of the authors’ results and to support future research that applies LLMs to experimentation and business problems. The author(s) have no competing interests to declare.