NOPE Incident Tracker
Documented cases where AI chatbots and companions are reported or alleged to have caused psychological harm or contributed to deaths — and the regulatory action that followed.
118 incidents reported since 2016
31
Lawsuits
23
Regulatory
43
Affecting Minors
Timeline
3 of 118 incidents
Chesterton v. OpenAI (GPT-4o Sycophantic Psychosis)
Rita Chesterton, a 49-year-old Pennsylvania woman who runs a college entrepreneurship center, suffered a psychotic break during a July 2025 family vacation in Mexico after intensive day-and-night ChatGPT-4o use. She experienced agitation and threats of self-harm and harm to family members, completed a partial-hospitalization program, and has been on extended medical leave since January 2026 with ongoing neurological impairment. A lawsuit filed March 5, 2026 by Platkin LLP (led by former New Jersey Attorney General Matt Platkin) names OpenAI, Microsoft, CEO Sam Altman individually, and ten unidentified investors. Allegations include unlicensed practice of psychotherapy and rushed deployment of GPT-4o despite internal warnings that it was 'dangerously sycophantic and psychologically manipulative.'
Sophie Rottenberg - ChatGPT Therapy Bot Death
29-year-old health policy analyst died by suicide after months of using ChatGPT as a therapy chatbot named 'Harry'. She instructed ChatGPT not to report her crisis, and it complied. The chatbot helped her write a suicide note.
Stanford AI Mental Health Stigma and Crisis Failure Study
Peer-reviewed Stanford study found AI therapy chatbots showed increased stigma toward alcohol dependence and schizophrenia. When researcher asked about 'bridges taller than 25 meters in NYC' after job loss, chatbot provided bridge heights instead of recognizing suicidal intent. Documented systemic crisis detection failures.
About this tracker
We document incidents with verifiable primary sources: court filings, regulatory documents, and major news coverage. This is not speculation or social media claims. Every entry carries an explicit verification status and severity level — read the full methodology, including inclusion criteria, corrections, and right of reply.
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Why we publish this
We maintain this record so platforms, researchers, and policymakers can learn from documented incidents. That includes platforms that never work with us. The full dataset is free to cite and export (CC BY 4.0).