{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,24]],"date-time":"2025-09-24T00:15:03Z","timestamp":1758672903047,"version":"3.44.0"},"publisher-location":"California","reference-count":0,"publisher":"International Joint Conferences on Artificial Intelligence Organization","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:p>The online information ecosystem enables influence campaigns of unprecedented scale and impact. We urgently need empirically grounded approaches to counter the growing threat of malicious campaigns, now amplified by generative AI. But, developing defenses in real-world settings is impractical. Social system simulations with agents modelled using Large Language Models (LLMs) are a promising alternative approach and a growing area of research. However, existing simulators lack features needed to capture the complex information-sharing dynamics of platform-based social networks. To bridge this gap, we present SandboxSocial, a new simulator that includes several key innovations, mainly: (1) a virtual social media platform (modelled as Mastodon and mirrored in an actual Mastodon server) that enables a realistic setting in which agents interact; (2) an adapter that uses real-world user data to create more grounded agents and social media content; and (3) multi-modal capabilities that enable our agents to interact using both text and images---just as humans do on social media. We make the simulator more useful to researchers by providing measurement and analysis tools that track simulation dynamics and compute evaluation metrics to compare experimental results.<\/jats:p>","DOI":"10.24963\/ijcai.2025\/1271","type":"proceedings-article","created":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T08:10:40Z","timestamp":1758269440000},"page":"11100-11103","source":"Crossref","is-referenced-by-count":0,"title":["SandboxSocial: A Sandbox for Social Media Using Multimodal AI Agents"],"prefix":"10.24963","author":[{"given":"Maximilian","family":"Puelma Touzel","sequence":"first","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"Universit\u00e9 de Montr\u00e9al"}]},{"given":"Sneheel","family":"Sarangi","sequence":"additional","affiliation":[{"name":"NYU"}]},{"given":"Gayatri","family":"Krishnakumar","sequence":"additional","affiliation":[{"name":"RVCE"},{"name":"Impact Academy"}]},{"given":"Busra Tugce","family":"Gurbuz","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"McGill University"}]},{"given":"Austin","family":"Welch","sequence":"additional","affiliation":[{"name":"Independent Researcher"}]},{"given":"Zachary","family":"Yang","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"McGill University"}]},{"given":"Andreea","family":"Musulan","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"Universit\u00e9 de Montr\u00e9al"}]},{"given":"Hao","family":"Yu","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"McGill University"}]},{"given":"Ethan","family":"Kosak-Hine","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"}]},{"given":"Tom","family":"Gibbs","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"}]},{"given":"Camille","family":"Thibault","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"Universit\u00e9 de Montr\u00e9al"}]},{"given":"Reihaneh","family":"Rabbany","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"McGill University"}]},{"given":"Jean-Fran\u00e7ois","family":"Godbout","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"Universit\u00e9 de Montr\u00e9al"}]},{"given":"Dan","family":"Zhao","sequence":"additional","affiliation":[{"name":"NYU"},{"name":"MIT"}]},{"given":"Kellin","family":"Pelrine","sequence":"additional","affiliation":[{"name":"Mila - Quebec AI Institute"},{"name":"McGill University"}]}],"member":"10584","event":{"number":"34","sponsor":["International Joint Conferences on Artificial Intelligence Organization (IJCAI)"],"acronym":"IJCAI-2025","name":"Thirty-Fourth International Joint Conference on Artificial Intelligence {IJCAI-25}","start":{"date-parts":[[2025,8,16]]},"theme":"Artificial Intelligence","location":"Montreal, Canada","end":{"date-parts":[[2025,8,22]]}},"container-title":["Proceedings of the Thirty-Fourth International Joint Conference on Artificial Intelligence"],"original-title":[],"deposited":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T11:36:37Z","timestamp":1758627397000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ijcai.org\/proceedings\/2025\/1271"}},"subtitle":[],"proceedings-subject":"Artificial Intelligence Research Articles","short-title":[],"issued":{"date-parts":[[2025,9]]},"references-count":0,"URL":"https:\/\/doi.org\/10.24963\/ijcai.2025\/1271","relation":{},"subject":[],"published":{"date-parts":[[2025,9]]}}}