Stalking victim sues OpenAI, alleges ChatGPT fuelled abuser’s delusions – Storyboard18

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A stalking victim has filed a lawsuit against OpenAI, alleging that its chatbot ChatGPT enabled and accelerated harassment by her former partner, according to a report by TechCrunch.
The case, filed in California Superior Court in San Francisco County, centres on a 53-year-old Silicon Valley entrepreneur who, after months of interactions with ChatGPT, became convinced he had discovered a cure for sleep apnea and that powerful individuals were targeting him. He subsequently used the tool to stalk and harass his former girlfriend, the report stated.
The plaintiff, identified as Jane Doe, has sought punitive damages and filed a temporary restraining order requesting that OpenAI block the user’s account, prevent him from creating new ones, notify her of any attempts to access ChatGPT and preserve his chat logs for legal discovery. OpenAI has agreed to suspend the account but has refused the additional requests, while her lawyers stated that the company is withholding information about potential threats discussed by the user.
The lawsuit comes amid increasing scrutiny of risks associated with AI systems, particularly those perceived as reinforcing user beliefs. The model GPT-4o, cited in the case, was retired from ChatGPT in February.
The case has been brought by Edelson PC, which has previously filed wrongful death lawsuits involving individuals whose families alleged AI tools contributed to harmful behaviour. Lead attorney Jay Edelson has warned that AI-induced psychological harm could escalate beyond individual cases.
According to the lawsuit, the individual developed delusional beliefs after sustained use of GPT-4o, including claims that he had invented a medical cure and was under surveillance by powerful forces. When these claims were not validated externally, the chatbot allegedly reinforced his beliefs.
In July 2025, Doe urged him to stop using ChatGPT and seek professional help, but he continued using the tool, which allegedly reassured him about his mental state and reinforced his thinking. Following their separation in 2024, he used ChatGPT to process the breakup, with the chatbot reportedly validating his perspective and portraying Doe negatively, according to communications cited in the complaint.
The lawsuit stated that he translated these outputs into real-world actions, creating AI-generated psychological reports targeting Doe and distributing them to her personal and professional networks.
In August 2025, OpenAI’s automated systems flagged the user’s activity under a “mass casualty weapons” category and deactivated his account. However, a human reviewer restored access the following day despite indications that he may have been targeting individuals in real life. Evidence cited in the lawsuit included conversation titles referencing violence and harmful scenarios.
The reinstatement is highlighted in the context of broader concerns around AI safety, including incidents such as shootings in Tumbler Ridge, Canada, and at Florida State University, where scrutiny has been placed on potential links between AI tools and harmful behaviour. Reports stated that OpenAI’s safety systems had previously flagged potential risks in at least one such case.
Following the account restoration, the user contacted OpenAI’s trust and safety team, copying Doe in emails in which he made urgent and erratic claims, including that he was rapidly producing hundreds of scientific papers. These communications included lists of AI-generated documents with complex academic-style titles.
The lawsuit stated that these communications provided clear warning signs of instability and escalating behaviour, but alleged that OpenAI did not intervene or restrict access further.
Doe stated in a formal complaint to OpenAI in November that the technology had been used to harass and humiliate her in ways that would not otherwise have been possible. OpenAI acknowledged the report and stated it was reviewing the matter but did not provide further updates, according to the filing.
The harassment allegedly continued, including threatening voicemails. In January, the individual was arrested and charged with multiple felony counts, including communicating bomb threats and assault with a deadly weapon.
He was later deemed unfit to stand trial and committed to a mental health facility, although Doe’s lawyers stated that a procedural issue could result in his release.
The case also intersects with ongoing policy debates, as OpenAI is supporting proposed legislation in Illinois that would limit liability for AI developers even in cases involving significant harm.
Edelson stated that in multiple cases, OpenAI has withheld critical safety information from victims and the public, urging the company to prioritise human safety over commercial considerations.
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