Gabriel Prenassi, Rodrigo Souza, Henrique Sekido, Guilherme Fonseca, Marcelo Manzato, and Leonardo Rocha. 2025. Calibration of Recommender Systems with LLMs: Prompt Optimization to Balance Accuracy, Diversity, and Fairness. In Proceedings of the 31st Brazilian Symposium on Multimedia and the Web, November 10, 2025, Rio de Janeiro/RJ, Brasil. SBC, Porto Alegre, Brasil, 103-111. DOI: https://doi.org/10.5753/webmedia.2025.15613.