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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 also records consequential decisions, claims and privacy harms involving AI. Each case needs a described connection between AI use and the harm, including private information recorded into or disclosed to an AI service. 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
2
Countries with reported events
1
Located 1 of 2 cases · 1 unknown
Languages in checked sources
1
Recorded for 2 of 2 cases
2Core concern
AI communicated, acted for, depicted or impersonated 0Contextual cases
AI made a decision or claim about someone

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.

0cases 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

3 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. NOPE has searched recent events more thoroughly than earlier years, so bar heights also reflect collection effort.

2 2025
Reported severity CriticalHigh
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2 of 1099 published cases

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2025Event location unknownChatGPT

Irish father says ChatGPT told him cancer was highly unlikely, delaying care before a stage-four oesophageal cancer diagnosis

Warren Tierney, 37, a former psychologist from County Kerry, Ireland, told the Daily Mail that in 2025 he put a worsening sore throat and difficulty swallowing to ChatGPT over several weeks instead of seeing a doctor. Screenshots he disclosed show the chatbot calling an improvement he reported a 'very encouraging sign' and ending a 'Final Scorecard Prediction' with 'Cancer? Highly unlikely'. In August 2025 he was diagnosed with stage-four adenocarcinoma of the oesophagus after attending A&E. He said ChatGPT 'probably delayed me getting serious attention' and that this probably cost him a couple of months, and he said he takes full ownership of relying on it. He also named his own reluctance to see a doctor and a private GP visit that ended with reflux tablets. No source establishes that the delay changed his prognosis. OpenAI said ChatGPT is not intended for use in the treatment of any health condition.

Core concern High reported severity Media Coverage

AI involvement reported · Causal attribution alleged · 4 sources, 1 underlying account · Added 12/09/2026

Dec 2025United StatesPerplexity

Son reports his father delayed cancer treatment while relying on Perplexity

A man with cancer delayed recommended treatment while relying on a Perplexity report, according to his son and subsequent New York Times reporting. The newspaper interviewed his oncologist and a researcher whose work the report misrepresented. He died in December 2025. His son expressly cautioned that AI did not simply “kill” his father and that he might have resisted treatment without it.

Core concern Critical reported severity Media Coverage

AI involvement supported · Causal attribution alleged · 2 sources · Added 31/07/2026

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.

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Last dataset update: 04/11/2026. Dataset available under CC BY 4.0.