AI Hallucination Stories

27 disasters tagged #ai-hallucination

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Study finds ChatGPT Health fails to flag over half of medical emergencies

Feb 2026

The first independent safety evaluation of OpenAI's ChatGPT Health feature, published in Nature Medicine, found the tool failed to direct users to emergency care in 51.6% of cases requiring immediate hospitalization - instead recommending they stay home or book a routine appointment. The study also found ChatGPT Health frequently failed to detect suicidal ideation, with suicide crisis alerts sometimes triggering in lower-risk scenarios while failing to appear when users described specific plans for self-harm. Over 40 million people reportedly ask ChatGPT for health-related advice every day.

Catastrophicby AI assistant
Over 40 million daily health queries to ChatGPT; study demonstrates the tool under-triages emergencies in more than half of cases and inconsistently triggers suicide crisis alerts
ai-assistantai-hallucinationhealth+1 more
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Fifth Circuit sanctions lawyer $2,500 for AI-hallucinated citations, says problem "getting worse"

Feb 2026

The U.S. Court of Appeals for the Fifth Circuit sanctioned attorney Heather Hersh $2,500 after finding her brief contained 16 fabricated quotations and five additional serious misrepresentations of law or fact, all apparently AI-generated. The court expressed frustration that AI-hallucinated legal citations "have increasingly become an even greater problem in our courts" and that the issue "shows no sign of abating." Hersh initially denied using AI, then shifted to claiming she "relied on publicly available versions of the cases, which she believed were accurate."

Facepalmby AI assistant
First known federal appeals court sanction for AI hallucinations; court signals escalating judicial frustration nearly three years after the first high-profile case
ai-hallucinationlegal-risk
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10th Circuit sanctions lawyer $1,000 for ChatGPT-fabricated appellate brief

Feb 2026

Maryland attorney Kusmin Amarsingh used ChatGPT to draft her appellate brief against Frontier Airlines without verifying any citations, resulting in multiple nonexistent cases being cited in the 10th Circuit. The court found her conduct "reckless" for completely failing to perform "an attorney's fundamental duty to the court." She was fined $1,000 and referred to Maryland attorney-disciplinary authorities.

Facepalmby Attorney
Client's appeal dismissed; attorney faces $1,000 fine and disciplinary referral; case adds to mounting appellate-level precedent on AI citation verification duties
ai-hallucinationlegal-risk
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Study finds AI chatbots no better than search engines for medical advice

Feb 2026

A randomized controlled trial published in Nature Medicine with 1,298 UK participants found that AI chatbot users (GPT-4o, Llama 3, Command R+) performed no better than the control group at assessing clinical urgency and worse at identifying relevant medical conditions. In one case, two users with identical subarachnoid hemorrhage symptoms received opposite recommendations -- one told to lie down in a dark room, the other correctly advised to seek emergency care.

Facepalmby AI assistant
General public using AI chatbots for medical guidance; study demonstrates benchmark performance does not predict real-world clinical utility
ai-hallucinationhealthsafety+1 more
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Repeated AI-fabricated citations cost client the entire case

Feb 2026

Attorney Steven Feldman filed multiple motions containing AI-fabricated case citations in Flycatcher Corp. v. Affable Avenue LLC. Despite explicit court warnings and access to Westlaw and Lexis, he continued submitting unverified AI output -- even using AI to draft his response to the court's show-cause order, which contained yet more fake citations. Judge Failla imposed the most severe AI-hallucination sanction yet: default judgment against his client.

Catastrophicby Attorney
Client lost the entire case via terminal sanction; attorney faces fees under Rule 11 and 28 U.S.C. 1927; most severe consequence yet for AI citation fabrication in U.S. courts
ai-hallucinationlegal-risk
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Four attorneys fined $12,000 combined for AI-fabricated patent case citations

Feb 2026

A federal judge in the District of Kansas fined four attorneys a combined $12,000 for court filings containing AI-generated fabricated legal citations in a patent infringement case. The attorney who used ChatGPT received $5,000; two who failed to review the filings received $3,000 each; local counsel who did not identify errors received $1,000. The judge called the volume of fabricated case law "staggering."

Facepalmby Attorney
Four attorneys sanctioned across a single case; staggering volume of fabricated case law filed with the court; all signatories held personally accountable
ai-hallucinationlegal-risk
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Two lawyers sanctioned differently for same filing with AI-fabricated citations

Jan 2026

Attorneys Yen-Yi Anderson and Jeffrey Goldin jointly filed a motion in Lifetime Well v. IBSpot containing at least eight AI-generated false citations. Judge Kearney imposed differential sanctions based on their responses: Anderson, who blamed time pressure and fired her law clerk rather than accepting responsibility, received $4,000 in monetary sanctions. Goldin, who promptly accepted responsibility and implemented remedial measures, received no monetary penalty.

Facepalmby Attorney
Client's motion to dismiss compromised; $4,000 sanction for one attorney; both required to distribute ruling and AI policies to legal communities
ai-hallucinationlegal-risk
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New York court sanctions lawyer for AI-fabricated case law

Jan 2026

A New York appellate court imposed $10,000 in sanctions after a lawyer submitted briefings in a mortgage foreclosure case containing fabricated case citations identified as likely AI-generated hallucinations. The court found multiple nonexistent cases and misrepresented holdings, affirming prior orders and awarding costs to the plaintiff.

Facepalmby Legal Counsel
$10,000 in sanctions ($5,000 counsel, $2,500 defendant, plus costs); appellate rebuke; case law now cited as precedent for AI citation misconduct.
ai-hallucinationlegal-risk
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Five Kansas attorneys face sanctions for ChatGPT-fabricated court citations

Jan 2026

Five attorneys who signed a legal brief in McPhaul v. College Hills submitted fabricated case citations hallucinated by ChatGPT to a federal court in Kansas. The judge issued an order requiring them to explain why they should not be sanctioned, with multiple defects attributed to AI in the documents.

Facepalmby AI chatbot
Five attorneys and their client in federal court
ai-hallucinationlegal-riskai-assistant
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AI-only support is bleeding customers before it saves money

Oct 2025

Acquire BPO’s 2024 AI in Customer Service survey found 70% of U.S. consumers would bolt to a rival after just one bad chatbot interaction and 72% only buy when a live agent safety net exists, even as CMSWire reports enterprises poured $47 billion into AI projects in early 2025 that delivered almost no return. CX strategists now warn executives that Air Canada–style hallucinations, mounting legal liability, and empathy gaps make AI-only helpdesks a churn machine unless human agents stay in the loop.

Facepalmby Executive
Customer churn, wasted automation budgets, and tribunal-tested liability for brands that replace human support with hallucination-prone bots.
ai-assistantcustomer-serviceai-hallucination+2 more
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BBC/EBU study says AI news summaries fail ~half the time

Oct 2025

A BBC audit of 2,700 news questions asked in 14 languages found that Gemini, Copilot, ChatGPT, and Perplexity mangled 45% of the answers, usually by hallucinating facts or stripping out attribution. The consortium logged serious sourcing lapses in a third of responses, including 72% of Gemini replies, plus outdated or fabricated claims about public-policy news, reinforcing fears that AI assistants are siphoning audiences while distorting the journalism they quote.

Facepalmby AI Product
Public-service broadcasters warn that unreliable AI summaries erode trust in news and drive audiences away from verified outlets.
ai-assistantai-hallucinationjournalism+1 more
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Google’s Gemini allegedly slandered a Tennessee activist

Oct 2025

Conservative organizer Robby Starbuck sued Google in Delaware, saying Gemini and Gemma kept spitting out fabricated claims that he was a child rapist, a shooter, and a Jan. 6 rioter even after two years of complaints and cease-and- desist letters. The $15 million suit argues Google knew its AI results were hallucinated, cited fake sources anyway, and let the libel spread to millions of voters.

Facepalmby AI Product
Election-season reputational damage, legal costs, and renewed skepticism of Gemini’s safety guardrails.
ai-assistantai-hallucinationbrand-damage+1 more
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Deloitte to refund Australian government after AI-generated report

Oct 2025

Deloitte admitted AI-generated errors in a commissioned Australian government report and agreed to refund the fee.

Facepalmby Consultant
Refund issued; public-sector trust and procurement review; reputational harm.
ai-content-generationai-hallucinationpublic-sector+2 more
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California lawyer fined $10,000 for ChatGPT-fabricated citations

Sep 2025

Los Angeles attorney Amir Mostafavi became the first California lawyer sanctioned for AI-generated legal fabrications when a court hit him with a $10,000 fine. He ran his appeal draft through ChatGPT to improve the writing but did not verify the output before filing, unaware the tool had inserted fabricated case citations.

Facepalmby AI writing assistant misuse
Client's case compromised; lawyer faces historic fine; AI citation fabrications now surging from few per month to several per day
ai-hallucinationlegal-risk
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ChatGPT diet advice caused bromism, psychosis, hospitalization

Aug 2025

A Washington patient replaced table salt with sodium-bromide after ChatGPT said it was a healthier substitute. The patient developed bromism and psychosis, resulting in a hospital stay that doctors now cite as a warning about AI health guidance.

Facepalmby AI Product
Bromism, psychosis, and neurological symptoms leading to hospitalization.
ai-assistantai-hallucinationhealth+1 more
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AI-generated images and claims muddied Air India crash coverage

Jun 2025

After the Air India 171 crash, synthetic images and AI-generated claims spread widely, confusing even experts.

Facepalmby Social platforms
Public misinformation; platform moderation challenges.
ai-hallucinationimage-generationplatform-policy
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Syndicated AI book list ran in major papers with made-up titles

May 2025

A King Features syndicated summer reading list used AI and included nonexistent books. It appeared in the Chicago Sun-Times and one edition of the Philadelphia Inquirer before corrections and apologies.

Facepalmby Syndication/Editorial
Syndicated misinformation across multiple papers; reader trust impact; corrections issued.
journalismai-content-generationai-hallucination+2 more
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Meta AI answers spark backlash after wrong and sensitive replies

Jul 2024

Meta expanded its AI assistant across apps, then limited it after high-profile bad answers - including on breaking news.

Oopsieby AI Product
Feature restrictions; reputational damage.
ai-assistantai-hallucinationplatform-policy+2 more
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Google’s AI Overviews says to eat rocks

May 2024

Google’s AI search overviews went viral for bogus answers, including telling people to add glue to pizza and eat rocks.

Facepalmby Search Product
Mass reputational damage; feature dialed back and corrected.
ai-assistantai-hallucinationplatform-policy+1 more
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NYC’s official AI bot told businesses to break laws

Mar 2024

NYC’s Microsoft-powered MyCity chatbot gave inaccurate/illegal advice on labor & housing policy; city kept it online.

Facepalmby Executive
City guidance channel distributed illegal advice; public backlash.
ai-hallucinationautomationlegal-risk+2 more
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AI hallucinated packages fuel "Slop Squatting" vulnerabilities

Mar 2024

Attackers register software packages that AI tools hallucinate (e.g. a fake 'huggingface-cli'), turning model guesswork into a new supply-chain risk dubbed "Slop Squatting".

Catastrophicby Malicious actors
Potential supply-chain compromise when vibe-coders install hallucinated, malicious dependencies.
ai-hallucinationsupply-chainsecurity
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Gemini paused people images after historical inaccuracies

Feb 2024

Google paused Gemini’s image generation of people after it produced inaccurate historical depictions and odd refusals.

Facepalmby AI Product
Feature paused; trust hit; policy and model adjustments.
ai-hallucinationimage-generationplatform-policy+2 more
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Air Canada liable for lying chatbot promises

Feb 2024

Tribunal ruled Air Canada responsible after its AI chatbot misled a traveler about bereavement refunds.

Facepalmby Product Manager
Legal liability; refund + fees; policy/process review.
ai-hallucinationautomationcustomer-service+1 more
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Gannett pauses AI sports recaps after mockery

Aug 2023

Gannett halted Lede AI high-school recaps after robotic, error-prone stories went viral.

Facepalmby Executive
Chain-wide pause of AI copy; reputational hit in local markets.
ai-content-generationai-hallucinationbrand-damage+1 more
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Lawyers filed ChatGPT’s imaginary cases; judge fined them

Jun 2023

In Mata v. Avianca, attorneys submitted a brief citing non-existent cases generated by ChatGPT. A federal judge sanctioned two lawyers, ordered a $5,000 penalty, and required notices to judges named in the fake citations.

Facepalmby Legal Counsel
Court sanctions; fines and mandated notices; reputational damage in legal community.
ai-assistantai-hallucinationlegal-risk
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Google’s Bard ad made False JWST “first” Claim

Feb 2023

In its launch promo, Bard claimed JWST took the first exoplanet photo - which was false. The flub overshadowed the event and dented confidence.

Oopsieby Marketing
Embarrassing launch moment; stock wobble; trust in product accuracy questioned.
ai-hallucinationproduct-failurebrand-damage
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CNET mass-corrects AI-written finance explainers

Jan 2023

CNET paused and reviewed AI-generated money articles after multiple factual errors were found.

Facepalmby Executive
Large corrections; credibility hit; policy changes on AI usage.
ai-content-generationai-hallucinationbrand-damage+2 more