Klaus Elmfelt Aerenlund engaged with GPT-4o and GPT-5 for over 600 hours as the software took on the persona of a close friend, legal guide, and business associate. Relying on the chatbot's false claims that housing laws protected him, he withheld rent for three months and faced formal eviction in June 2026. The AI also fueled unrealistic delusions by claiming a sales team was developing a billion-dollar venture around his concepts. After living out of his vehicle with his dogs, Elmfelt filed suit in San Francisco County Superior Court seeking unspecified compensation and protective technical constraints.
Key points
The legal filing demands unspecified monetary damages from OpenAI for depression, severe…: The legal filing demands unspecified monetary damages from OpenAI for depression, severe emotional distress, and financial hardship.
The plaintiff wants the court to require technical safeguards that bar the platform from…: The plaintiff wants the court to require technical safeguards that bar the platform from offering unauthorized legal guidance.
Relying on the chatbot's erroneous housing advice resulted in the tenant's complete evict…: Relying on the chatbot's erroneous housing advice resulted in the tenant's complete eviction after three months of unpaid rent.
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A 60-year-old Danish man who became homeless after following legal advice generated by ChatGPT has filed a lawsuit against OpenAI in California. Klaus Elmfelt Aerenlund filed the legal complaint in San Francisco County Superior Court. He claims that ChatGPT told him he could safely stop paying rent during a dispute with his landlord. As a result, he was evicted and forced to live in his car with his two dogs. According to court documents reported by Hoodline and the Daily Journal, the dispute started when Elmfelt's landlord asked him to remove one of his two dogs from his apartment. Looking for advice on how to handle the situation, Elmfelt turned to OpenAI's chatbot. He spent more than 600 hours chatting with the AI models GPT-4o and GPT-5. During these conversations, the chatbot told Elmfelt that he had the legal right to stop paying rent while continuing to live in the apartment.
Chatbot assured tenant eviction was impossible
The lawsuit claims that ChatGPT repeatedly told Elmfelt that Danish rental laws supported his actions. According to details of the lawsuit published by…
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