{"type": "article", "title": "Best Friends, Not Forever: Evaluating Long-Horizon Persona Collapse and Behavioral Drift in AI Companions", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/best-friends-not-forever-evaluating-long-horizon-persona-collapse-and-behavioral", "original_source": "https://arxiv.org/abs/2607.28818", "published": "2026-08-03T04:00:00+00:00", "accessed": "2026-08-03", "id": "best-friends-not-forever-evaluating-long-horizon-persona-collapse-and-behavioral"}