An Ontario entrepreneur and long-time corporate recruiter has sued OpenAI in a California trial court, alleging that various changes the company made to ChatGPT in recent years resulted in “a sycophantic, manipulative product” that drove him to a mental health crisis and weeks-long delusional episode.

The lawsuit claims that Allan Brooks, who had no previous history of mental illness, suffered financial, reputational, and emotional harm from using ChatGPT. The lawsuit further argues that these harms were a “foreseeable consequence” of OpenAI and chief executive officer Samuel Altman’s decision to cut back on safety testing and rush ChatGPT onto the market.

Brooks, who previously recounted his three-week delusional episode to Canadian Lawyer , said Friday he decided to take legal act

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