Lantieri lawsuit alleges psychiatric crisis and serious injury during ChatGPT use
The Lantieri lawsuit alleges that intensive GPT-4o use reinforced delusional beliefs before a psychiatric crisis and serious injuries requiring hospital care. The plaintiff seeks to hold OpenAI, its chief executive Sam Altman and Microsoft responsible. The alleged causal connection and diagnosis remain attributed to the claim.
Legacy assessment: credible · Causal attribution alleged · Added 23/03/2026