Yutong Zhang, Dora Zhao, Jeffrey T. Hancock, Robert Kraut, Diyi Yang · 2025 · arXiv; Nature Human Behaviour 2026 (per listing) Read the source Among 1,131 Character.AI users, using the bot mainly for companionship went with lower well-being, especially with heavy use, deep self-disclosure and small offline networks. Questions it bears on Does AI companionship displace people