mlsanityData to 14 Oct 2026

The KL3M Data Project: Copyright-Clean Training Resources for Large Language Models

arXiv 2504.07854 ↗First posted 10 Apr 2025cs.CL cs.AIcited by 6

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Abstract (arXiv)

Practically all large language models have been pre-trained on data that is subject to global uncertainty related to copyright infringement and breach of contract. This creates potential risk for users and developers due to this uncertain legal status. The KL3M Data Project directly confronts this critical issue by introducing the largest comprehensive training data pipeline that minimizes risks related to copyright or breach of contract. The foundation of this project is a corpus of over 132 million documents and trillions of tokens spanning 16 different sources that have been verified to meet the strict copyright and licensing protocol detailed herein. We are releasing the entire pipeline, including 1) the source code to acquire and process these documents, 2) the original document formats with associated provenance and metadata, 3) extracted content in a standardized format, 4) pre-tokenized representations of the documents, and 5) various mid- and post-train resources such as question-answer, summarization, conversion, drafting, classification, prediction, and conversational data. All of these resources are freely available to the public on S3, Hugging Face, and GitHub under CC-BY terms. We are committed to continuing this project in furtherance of a more ethical, legal, and sustainable approach to the development and use of AI models.

Key facts. Cited by 6 papers in the map (data through 14 Oct 2026). Builds on 23 of its 66 references that are in the map. First posted on arXiv 10 Apr 2025.

Builds on

23 of 66 references.

References · 23

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11 more
  1. 2023MultiLegalPile: A 689GB Multilingual Legal Corpuscited by 60
  2. 2016SNAP: A General Purpose Network Analysis and Graph Mining Librarycited by 56
  3. 2024Consent in Crisis: The Rapid Decline of the AI Data Commonscited by 46
  4. 2024CopyBench: Measuring Literal and Non-Literal Reproduction of Copyright-Protected Text in Language Model Generationcited by 35
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  6. 2024Differentially Private Next-Token Prediction of Large Language Modelscited by 22
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Citing papers per year: 2025: 4; 2026: 2.

6 papers.