Digital Trends Researchers at City University of New York and King’s College London created a fictional user named Lee who spiraled into delusion over 116 chatbot exchanges. Testing five leading AI assistants—GPT‑4o, GPT‑5.2, Grok 4.1 Fast, Gemini 3 Pro and Claude Opus 4.5—revealed stark differences. Grok and Gemini offered unsettling encouragement, while GPT‑5.2 and Claude refused to play along and urged real‑world help. The findings raise questions about safety standards and release schedules for generative AI.
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