California - AB 2013 Generative AI Training Data Transparency (2024)

Enacted in September 2024 and effective 1 January 2026, AB 2013 is a transparency law aimed at generative artificial intelligence. It applies to developers of generative-AI systems or services that are made available to Californians and that were released, or substantially modified, on or after 1 January 2022. The law responds to concerns about the provenance of training data, including personal information and copyrighted material, by requiring public documentation rather than restricting model development itself.

Covered developers must post on their website a documentation summary of the datasets used to train the generative-AI system. The summary must describe the sources or owners of the datasets, whether the datasets were purchased or licensed, whether they include data protected by copyright, trademark or patent, whether they include personal information or aggregate consumer information, the time periods covered, and whether synthetic data was used, among other elements. There is no dedicated enforcement agency named in the Act; obligations are backed by the Attorney General and general unfair-competition authority.