OpenAI vs. Anthropic: every lawsuit compared

Direct copyright; vicarious; contributory (consolidates Alter/Sancton; with Basbanes)

DMCA 1202(b)(1)/(b)(3) on appeal; state law

On Appeal

Radio host Mark Walters sued OpenAI after ChatGPT fabricated a legal complaint falsely accusing him of embezzling from the Second Amendment Foundation. The case was remanded to Georgia state court. I…

Direct copyright; vicarious; DMCA 1202(b)(1)/(b)(3); state law (consolidates Tremblay, Silverman, Chabon)

Direct copyright; contributory; DMCA 1202(b)(1)/(b)(3)

DMCA 1202(b)(1) (rejected on MTD)

DMCA 1202(b)(1)/(b)(3)

Direct copyright; vicarious; contributory; DMCA 1202(b)(1)/(b)(3); Lanham Act (consolidates Daily News, CIR)

Direct copyright; vicarious; contributory; DMCA 1202(b)(1)/(b)(3); Lanham Act; state law

Direct copyright; contributory; DMCA 1202(b)(1)/(b)(3); 1201(A)(1) circumvention; trademark dilution; unjust enrichment

Penguin Random House sued OpenAI's European subsidiary, alleging that ChatGPT unlawfully 'memorised' and can reproduce text, images, and cover designs from Ingo Siegner's beloved German children's bo…

Hagens Berman filed a wrongful death suit alleging that on August 5, 2025, ChatGPT-4o repeatedly affirmed Stein-Erik Soelberg's delusions related to mental illness, deepening his psychosis over month…

Quebec visual artist Chloé Sabourin filed an application to commence class actions against both Meta and OpenAI on behalf of persons domiciled in Quebec who hold copyright in artistic works used with…

16-year-old Adam Raine died by suicide on April 11, 2025, after months of interactions with ChatGPT-4o which allegedly validated his suicidal ideation, provided detailed suicide instructions, and dis…

First major generative AI copyright case in Brazil. Folha de S.Paulo alleges OpenAI: (1) unlawfully scraped and used its copyrighted journalistic content — including paywall-protected articles — to t…

India's major music labels allege OpenAI used their copyrighted sound recordings, musical compositions, and lyrics without authorisation to train its AI models. Sought to intervene in ANI v. OpenAI;…

Musk's xAI sued OpenAI alleging it poached xAI employees and misappropriated trade secrets. Judge Rita F. Lin dismissed the complaint, finding it 'notably absent' of allegations about OpenAI's own ac…

FTC launched a formal inquiry into major tech companies' AI chatbots, focusing on what companies are doing to evaluate risks to children who use chatbots as companions. The inquiry was triggered by t…

The FIP, representing Indian and international book publishers, alleges OpenAI used copyrighted literary and academic works without authorisation to train ChatGPT. Filed as an intervention/impleadmen…

Canada's first and largest AI copyright case. A coalition of Canada's leading news publishers alleges OpenAI: (1) scraped and reproduced their copyrighted news content without licence or payment to t…

India's first AI copyright case. ANI (Indian wire news agency) alleges OpenAI: (1) used automated web crawlers to scrape its copyrighted news articles without authorisation to train ChatGPT; (2) repr…

GEMA sued OpenAI for copyright infringement of song lyrics of nine well-known German songs (including 'Atemlos', 'Männer', 'Über den Wolken') used to train GPT-4 and GPT-4o. The court ruled on 11 Nov…

FTC issued a sprawling civil investigative demand (CID) to Microsoft in late 2024, signed by then-Chair Lina Khan. Compels disclosure of AI training costs, data center capacity, licensing practices,…

Musk's wide-ranging 26-claim complaint alleges OpenAI and Altman fraudulently induced his $44.8M donation by promising OpenAI would remain an open, nonprofit AI lab for humanity's benefit, then engin…

Plaintiffs allege OpenAI surreptitiously transcribed millions of YouTube users' videos without authorization, including plaintiff Petryazhna's copyrighted videos such as "A Bubble World," and used th…

Consumer privacy class action filed September 5, 2023 against OpenAI and Microsoft alleging misuse of plaintiffs' personal data collected from social media platforms and other sites to train ChatGPT…

158-page class action filed by Clarkson Law Firm alleging OpenAI and Microsoft 'secretly scraped' personal data of hundreds of millions of internet users — including children — without consent to tra…

Australian Mayor Brian Hood threatened to become the first person globally to sue OpenAI for AI defamation after ChatGPT falsely identified him as a convicted criminal in the AWB foreign bribery scan…

Direct copyright; vicarious; contributory (stayed/consolidated with Authors Guild)

Direct copyright; vicarious; contributory; DMCA 1202(b)(1)

Direct copyright

Direct copyright (8-defendant)

Direct copyright; vicarious; DMCA 1202(b)(1); CFAA; state law

Direct copyright; vicarious; contributory; unjust enrichment

Direct copyright; state law

DMCA 1201(a)

Direct copyright; contributory; DMCA 1202(b)(1); trademark infringement/counterfeiting/dilution; state law

Direct copyright; vicarious; contributory; DMCA 1202(b)

Direct copyright (tentative settlement)

Plaintiffs, authors who opted out of the Bartz v. Anthropic settlement, allege copyright infringement by AI companies including Anthropic for using their works obtained from shadow libraries without…

Direct copyright; vicarious; contributory; DMCA 1202(b)(1)/(b)(3)

Direct copyright (multi-defendant)

Direct copyright (8-defendant)