Mei, K.X. et al. 2026. Grok in the Wild: Characterizing the Roles and Uses of Large Language Models on Social Media. Proceedings of the International AAAI Conference on Web and Social Media. 20, 1 (May 2026), 1609–1633. DOI:https://doi.org/10.1609/icwsm.v20i1.42715.