Active Last verified: Apr 25, 2026

Authors Guild v. Microsoft Corporation

Authors Guild and 17 fiction authors sued OpenAI and Microsoft, alleging the companies copied their copyrighted books wholesale without permission to train large language models like GPT. The case proceeds under the Copyright Act in the Southern District of New York as a class action for professional fiction writers, with Microsoft added in a December 2023 amended complaint and related first-to-file disputes. It represents one of multiple consolidated AI copyright suits testing fair use in training generative models, amid threats to authors' livelihoods where median full-time income is just over $20,000.[3][5][1][8]

🏛️ 2d Cir.· Case No. 24-1007· Filed Apr 18, 2024

Summary

Authors Guild and 17 fiction authors sued OpenAI and Microsoft, alleging the companies copied their copyrighted books wholesale without permission to train large language models like GPT. The case proceeds under the Copyright Act in the Southern District of New York as a class action for professional fiction writers, with Microsoft added in a December 2023 amended complaint and related first-to-file disputes. It represents one of multiple consolidated AI copyright suits testing fair use in training generative models, amid threats to authors' livelihoods where median full-time income is just over $20,000.[3][5][1][8]

Case details

Court
2d Cir.
Docket number
24-1007
Filed
Apr 18, 2024
Status
Active

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