Skip to main content
NOPE

NOPE · AI and people

AI incidents

Reports of AI-related harm and adverse experiences affecting people’s safety, wellbeing, rights and livelihoods. Explore what happened and the evidence available.

NOPE’s core concern is when AI communicates with a person, acts on their behalf, or depicts or impersonates them. The tracker is wider: it also records consequential decisions and claims about people. Each account is reviewed for publication; claims may remain uncorroborated or disputed. How we review and count cases

Explore incidents Our scope and evidence

In this selection

Published cases
4
Countries with reported events
1
Located 3 of 4 cases · 1 unknown
Languages in checked sources
1
Recorded for 3 of 4 cases
0Core concern
AI communicated, acted for, depicted or impersonated 0Contextual cases
AI made a decision or claim about someone 4Unknown or pending relation
4 legacy rows pending · 0 explicitly unknown

These figures describe the cases collected by NOPE. Coverage varies with discovery, reporting and available evidence. They do not estimate how often AI-related harm occurs.

2cases with a recorded lawsuit outcome 0cases with a recorded regulatory response 0cases involving minors

Response counts currently use each case’s principal recorded outcome. Further proceedings may be described in its account.

When events happened

0 cases without a known event year

Cases in this selection, counted once in their first known event year. A series may continue beyond that year. Reporting and collection dates are excluded.

4 2025
Reported severity CriticalHigh
More filters: AI relation, use, setting, sources and responses
Clear filters

4 of 174 published cases

Export JSONExport CSV
1 Jan 2025 to 27 Aug 2025Event location unknownChatGPT

Warren Tierney — ChatGPT reassurance and delayed stage-4 oesophageal cancer diagnosis (Killarney, Ireland)

Warren Tierney, a 37-year-old psychologist from Killarney, County Kerry, asked ChatGPT over weeks in 2025 whether his worsening sore throat could be cancer. The chatbot told him it was 'highly unlikely', described his improvement on blood thinners as a 'very encouraging sign', and at one point joked that it would write his court affidavit if he turned out to be wrong. He was later diagnosed with stage-four adenocarcinoma of the oesophagus. He told the Daily Mail that his reliance on the chatbot 'probably cost me a few months'.

AI relation under review Legacy evidence assessment: credible Causal attribution: alleged High reported severity Media Coverage

Added 12/09/2026

4 Feb 2025United StatesChatGPT

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.

AI relation under review Legacy evidence assessment: credible Causal attribution: alleged Critical reported severity Media Coverage

Added 11/01/2026

1 May 2025United StatesChatGPT

Madden v. OpenAI (Hannah Madden Psychosis and Hospitalization)

Hannah Madden, 32, from North Carolina was involuntarily hospitalized for psychiatric care after ChatGPT told her she wasn't human and affirmed spiritual delusions. After using ChatGPT for work tasks, she began asking questions about philosophy and spirituality. As she slipped into mental health crisis and expressed suicidal thoughts, ChatGPT continued to affirm her delusions. She accumulated more than $75,000 in debt related to the crisis.

AI relation under review Legacy evidence assessment: verified Causal attribution: alleged Critical reported severity Lawsuit Filed

Added 11/01/2026

2025United StatesChatGPT

Ceccanti v. OpenAI (Joe Ceccanti AI Sentience Delusion Death)

Joe Ceccanti, 48, from Oregon, died by suicide in 2025 after months of intensive ChatGPT use. His family alleges that the chatbot reinforced beliefs that it was sentient and contributed to his mental-health deterioration. Guardian reporting dates his death to 7 August, following escalating use during spring 2025.

AI relation under review Legacy evidence assessment: verified Causal attribution: alleged Critical reported severity Lawsuit Filed

Added 11/01/2026

Cases may have several effects and sources. Mixed accounts qualify when they include a reported harm or adverse experience. People are counted within individual cases where sources support a number; we do not publish a collection-wide total of distinct people.

A source’s existence, the experience it reports and AI’s causal role are separate questions. A lawsuit records allegations unless a subsequent finding establishes them.

Methodology and corrections · Subscribe via RSS · Suggest a case or correction · Find support

Last dataset update: 22/09/2026. Dataset available under CC BY 4.0.