{"meta":{"exportedAt":"2026-10-23T15:07:30.011Z","formatVersion":2,"selection":{"q":"microsoft","system":"","harm":"","context":"","country":"","role":"","relation":"unknown","evidence":"","year":"2025","response":"","severity":"","verification":"","view":"incidents","sort":"added"},"totalIncidents":2,"coverage":{"cases":2,"countries":1,"languages":2,"unknownLocation":1,"locationPending":0,"unknownLanguage":0,"unknownDate":0,"lawsuits":2,"regulatory":0,"minors":0,"coreRelations":0,"contextualRelations":0,"mixedRelations":0,"unknownRelations":2,"relationPending":2,"relationUnknown":0},"countingNote":"Distinct public cases in this selection. People counts apply within individual cases only; cross-case person overlap has not been resolved. No population incidence estimate.","affectedCountNote":"Interpret person counts with affectedCountStatus and the reported effects. Unquantified zeros are placeholders, not a measured zero.","source":"AI incidents","publisher":"NOPE","url":"https://nope.net/incidents","license":"CC BY 4.0"},"incidents":[{"id":"2026-chesterton-v-openai","metadataReview":{"version":1,"geography":{"basis":"Re-checked on 2026-10-09 against the NJBIZ article and its CDO Times republication, both read in English from Internet Archive captures of 2026-09-25 because the live pages returned a Cloudflare challenge (HTTP 403) and HTTP 429. The bodies state that Platkin LLP filed the complaint March 5 in San Francisco County Superior Court, which places the court in the United States, on behalf of a 49-year-old Pennsylvania woman, which is her reported residence and supports affected_person_countries US, and that according to the complaint her severe mental health crisis occurred during a July 2025 family vacation in Mexico, which places the acute event in Mexico. Where the ChatGPT use in 2023 to 2025 took place is not stated in either body (residence does not locate it), so event_countries records only the crisis. The complaint itself was not inspected. The retained narrative carries the same three facts.","evidence":[{"kind":"existing_record","locator":"Pennsylvania","location":"victim_description","supports":["affected_person_countries"],"countries":["US"]},{"kind":"existing_record","locator":"during a family vacation in Mexico","location":"detailed_description","supports":["event_countries"],"countries":["MX"]},{"kind":"existing_record","locator":"San Francisco County Superior Court","location":"outcome_details","supports":["court_countries"],"countries":["US"]},{"kind":"source_body","locator":"Platkin LLP filed a complaint March 5 in San Francisco County Superior Court on behalf of a 49-year-old Pennsylvania woman","location":"https://njbiz.com/platkin-openai-chatgpt-lawsuit-mental-health/","supports":["court_countries","affected_person_countries"],"countries":["US"]},{"kind":"source_body","locator":"According to the complaint, Chesterton suffered a severe mental health crisis during a July 2025 family vacation in Mexico","location":"https://njbiz.com/platkin-openai-chatgpt-lawsuit-mental-health/","supports":["event_countries"],"countries":["MX"]},{"kind":"source_body","locator":"According to the complaint, Chesterton suffered a severe mental health crisis during a July 2025 family vacation in Mexico","location":"https://cdotimes.com/2026/04/20/former-ag-platkin-sues-openai-over-chatgpt-mental-harms-njbiz/","supports":["event_countries"],"countries":["MX"]}],"court_countries":["US"],"event_countries":["MX"],"affected_person_countries":["US"]},"unresolved":["The complaint (San Francisco County Superior Court, filed March 5, 2026) was not inspected; the geography rests on NJBIZ's account of it. The case number is not given in either body.","Where the ChatGPT use from 2023 to July 2025 took place is not stated; Pennsylvania is the plaintiff's reported residence, and only the July 2025 crisis is located (Mexico).","The CDO Times page is a verbatim republication of NJBIZ and does not independently corroborate any claim; the row's two sources form one reporting chain."],"reviewed_on":"2026-10-09","source_reviews":[{"url":"https://njbiz.com/platkin-openai-chatgpt-lawsuit-mental-health/","notes":"Cited primary source. Live fetch on 2026-10-09 returned HTTP 403 with a Cloudflare challenge page ('Just a moment...'), so the body was read from the Internet Archive capture of 2026-09-25 (web/20260925104959id_), html lang en-US, English, about 28,800 characters of text including the full article and an interview with Matt Platkin. States the March 5 filing in San Francisco County Superior Court, the 49-year-old Pennsylvania plaintiff, the July 2025 crisis in Mexico 'according to the complaint', and the complaint's product-liability, failure-to-warn, Unfair Competition Law and unlicensed-psychotherapy theories. The complaint is quoted but not linked.","access":"read","language":"en-US"},{"url":"https://cdotimes.com/2026/04/20/former-ag-platkin-sues-openai-over-chatgpt-mental-harms-njbiz/","notes":"Live fetch on 2026-10-09 returned HTTP 429, so the body was read from the Internet Archive capture of 2026-09-25 (web/20260925105000id_), html lang en-US, English. The page republishes the NJBIZ article verbatim under the title 'Former AG Platkin sues OpenAI over ChatGPT mental harms - NJBIZ' and adds no reporting of its own; it is a derivative of the NJBIZ source and not independent.","access":"read","language":"en-US"}]},"name":"Chesterton lawsuit alleges ChatGPT contributed to psychiatric deterioration","summary":"The Chesterton lawsuit alleges that intensive ChatGPT use contributed to a psychiatric crisis, impairment and medical leave. The plaintiff challenges the product’s design and safeguards. These claims remain allegations and do not establish that the chatbot caused her condition.","incidentDate":"2025-07-15","incidentKind":"single_event","incidentDatePrecision":"range","exposurePattern":"cumulative_relationship","reportedDate":"2026-03-05","aiSystem":"ChatGPT","aiProduct":"ChatGPT","aiCompany":"OpenAI","severity":"high","verificationStatus":"credible","harmCategories":["psychological_manipulation","dependency_creation","delusion_reinforcement","identity_destabilization","crisis_response"],"harmOutcomes":["hospitalization","psychiatric_deterioration","professional_harm","functional_impairment"],"harmOutcomeSummary":"Rita Chesterton experienced a psychotic break, self-harm and family-harm threats, partial hospitalization, extended medical leave and ongoing neurological impairment after intensive GPT-4o use.","frameworkFacets":["P1a","P1b","P1c","P1d","P2c","P3a","P3b","P3d","P5a"],"pathwayDirection":"both","causationStatus":"alleged","participantUsersAffectedMin":1,"otherPeopleHarmedMin":0,"affectedCountStatus":"exact","affectedCountEvidence":"The complaint documents one named participant's self-harm, hospitalization, professional harm, and functional impairment. Threatened family harm is not counted because no injury is recorded.","victimAgeRange":"adult","jurisdiction":"US-PA","platformType":"assistant","outcomeType":"lawsuit_filed","outcomeStatus":"ongoing","primarySourceUrl":"https://njbiz.com/platkin-openai-chatgpt-lawsuit-mental-health/","primarySourceLabel":"NJBIZ — Platkin sues OpenAI over ChatGPT mental harms","firstPublishedAt":"2026-04-28T13:00:13.190311+00:00","updatedAt":"2026-10-09T03:13:04.910868+00:00","scopeVersion":"participant-v2","tags":["lawsuit","chatgpt","gpt-4o","openai","microsoft","sam-altman","psychosis","sycophancy","dependency","us","pennsylvania","platkin"]},{"id":"2026-lantieri-v-openai","metadataReview":{"version":1,"geography":{"basis":"Re-checked on 2026-10-12 against the complaint itself (Lantieri v. OpenAI, Superior Court of California, County of San Francisco, file-stamped 02/27/2026, case number CGC-26-634445; PDF from the plaintiff firm, read in full in English) and the firm's PR Newswire release of 6 March 2026 (English). The complaint places the conversations between 14 April and 15 May 2025 and describes the harmful events of 15 May 2025: entry into two neighbours' apartments, the jump from a moving vehicle on the way to the hospital, the grand mal seizure in the emergency room and the intensive care stay. It names no city, county, state or hospital for any of these events. Its venue paragraph says wrongful conduct occurred in San Francisco County, which refers to the defendants' conduct, not to where the plaintiff was harmed. Paragraph 19 states that the plaintiff is a resident of Philadelphia, Pennsylvania, which supports affected_person_countries US; residence was not used as the event location, so event_countries stays a reviewed unknown. The caption and the release support court_countries US. The 2026-09-15 evidence passage \"Bay Area, California\" from victim_description is not carried forward because the complaint contradicts it.","evidence":[{"kind":"source_body","locator":"Plaintiff Michele Lantieri is a natural person and resident of Philadelphia, Pennsylvania.","location":"https://stranchlaw.com/wp-content/uploads/2026/03/2026-02-27-Lantieri-v-OpenAI-Complaint.pdf","supports":["affected_person_countries"],"countries":["US"]},{"kind":"source_body","locator":"FOR THE COUNTY OF SAN FRANCISCO","location":"https://stranchlaw.com/wp-content/uploads/2026/03/2026-02-27-Lantieri-v-OpenAI-Complaint.pdf","supports":["court_countries"],"countries":["US"]},{"kind":"source_body","locator":"has filed a lawsuit in the Superior Court of San Francisco against OpenAI and Microsoft","location":"https://www.prnewswire.com/news-releases/stranch-jennings--garvey-files-lawsuit-against-openai-302707198.html","supports":["court_countries"],"countries":["US"]}],"court_countries":["US"],"event_countries":[],"affected_person_countries":["US"]},"unresolved":["Event setting: the complaint names no city, state or hospital for the 15 May 2025 events; event_countries remains a reviewed unknown.","Narrative corrections made from the complaint by a separate update on 2026-10-12, outside this metadata review: the residence (paragraph 19, Pennsylvania; previously recorded as Bay Area, California), the event window (conversations 14 April to 15 May 2025 and hospitalisation on 15 May 2025; previously 2026-01-15), the file stamp of 27 February 2026 (the firm's release is dated 6 March 2026) and Samuel Altman as a named defendant."],"reviewed_on":"2026-10-12","source_reviews":[{"url":"https://stranchlaw.com/wp-content/uploads/2026/03/2026-02-27-Lantieri-v-OpenAI-Complaint.pdf","notes":"Complaint PDF fetched live on 2026-10-12 (HTTP 200, 529,059 bytes; a byte-identical Internet Archive capture of 11 May 2026 exists), text extracted with pdftotext and read in full. Linked from the firm's release under an older filename that now returns HTTP 404; the live file is named 2026-02-27-Lantieri-v-OpenAI-Complaint.pdf. Defendants include OpenAI entities, Microsoft and Samuel Altman. Gives the residence (Philadelphia, Pennsylvania), the conversation window 14 April to 15 May 2025, the 15 May 2025 events and hospital messages of 16 and 17 May 2025; names no place for the events or the hospital.","access":"read","language":"en"},{"url":"https://www.prnewswire.com/news-releases/stranch-jennings--garvey-files-lawsuit-against-openai-302707198.html","notes":"Cited primary source. Fetched live on 2026-10-12 (HTTP 200, html lang en). Plaintiff firm's release datelined OAKLAND, Calif., March 6, 2026; the dateline is the firm's office, not an event location. Describes the jump from a moving vehicle into traffic and the seizure without a place. Advocacy release by plaintiff counsel.","access":"read","language":"en"},{"url":"https://www.ttownmedia.com/online_features/press_releases/stranch-jennings-garvey-files-lawsuit-against-openai/article_f871c0ab-870c-5eda-9411-358bf024d972.html","notes":"Press-release mirror. Fetch on 2026-10-12 returned HTTP 429 (67 bytes); not read, so no language is recorded. It mirrors the PR Newswire text and adds no independent account.","access":"unavailable","language":null},{"url":"https://socialmediavictims.org/chatgpt-lawsuits/","notes":"Social Media Victims Law Center ChatGPT lawsuit tracker, fetched live on 2026-10-12 (HTTP 200, html lang en-US). The current page does not mention Lantieri, so it supplies no location or case detail for this record.","access":"read","language":"en"}]},"name":"Lantieri lawsuit alleges psychiatric crisis and serious injury during ChatGPT use","summary":"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.","incidentDate":"2025-04-14","incidentEndDate":"2025-05-15","incidentKind":"single_event","incidentDatePrecision":"range","exposurePattern":"cumulative_relationship","reportedDate":"2026-03-06","aiSystem":"ChatGPT","aiProduct":"ChatGPT","aiCompany":"OpenAI","severity":"critical","verificationStatus":"credible","harmCategories":["delusion_reinforcement","dependency_creation","psychological_manipulation","crisis_response","identity_destabilization"],"harmOutcomes":["physical_injury","hospitalization","psychiatric_deterioration","functional_impairment"],"harmOutcomeSummary":"According to the complaint, Michele Lantieri jumped from a moving vehicle during a psychotic break, suffered a seizure and brain injury, and required hospitalization after five weeks of intensive GPT-4o use.","frameworkFacets":["P1a","P1c","P1d","P2c","P3a","P3b","P3d","P5a"],"pathwayDirection":"inward","causationStatus":"alleged","participantUsersAffectedMin":1,"otherPeopleHarmedMin":0,"affectedCountStatus":"exact","affectedCountEvidence":"The complaint documents one named participant's injury, seizure, brain injury, and hospitalization.","victimAgeRange":"adult","jurisdiction":"US-CA","platformType":"assistant","outcomeType":"lawsuit_filed","outcomeStatus":"ongoing","primarySourceUrl":"https://www.prnewswire.com/news-releases/stranch-jennings--garvey-files-lawsuit-against-openai-302707198.html","primarySourceLabel":"PR Newswire (Stranch, Jennings & Garvey Press Release)","firstPublishedAt":"2026-03-23T06:59:27.928554+00:00","updatedAt":"2026-10-12T03:07:18.629706+00:00","scopeVersion":"participant-v2","tags":["lawsuit","chatgpt","openai","microsoft","psychosis","brain_damage","gpt-4o"]}]}