Share on LinkedInShare on LinkedIn

ARTICLE · 02 OCTOBER 2024

California Passes New Generative Artificial Intelligence Law Requiring Disclosure Of Training Data

Mayer Brown
Mayer Brown
Contributor
Mayer Brown

Mayer Brown

Mayer Brown is a leading international law firm positioned to represent the world’s major...

View firm profile
Explore more from Mayer Brown

On September 28, 2024, Governor Gavin Newsom signed into law AB 2013, which is a generative artificial intelligence ("AI") law that requires developers to post information on their websites...

United StatesTechnology

On September 28, 2024, Governor Gavin Newsom signed into law AB 2013, which is a generative artificial intelligence ("AI") law that requires developers to post information on their websites regarding the data used to train their AI systems. Below are the key points regarding this new generative AI law:

  • Who does the law apply to? The law applies to AI developers, which is defined broadly to mean any person, government agency, or entity that either develops an AI system or service or "substantially modifies it," which means creating "a new version, new release, or other update to a generative artificial intelligence system or service that materially changes its functionality or performance, including the results of retraining or fine tuning."

We operate a free-to-view policy, asking only that you register in order to read all of our content. Please login or register to view the rest of this article.

Visit us at mayerbrown.com

Mayer Brown is a global services provider comprising associated legal practices that are separate entities, including Mayer Brown LLP (Illinois, USA), Mayer Brown International LLP (England & Wales), Mayer Brown (a Hong Kong partnership) and Tauil & Chequer Advogados (a Brazilian law partnership) and non-legal service providers, which provide consultancy services (collectively, the "Mayer Brown Practices"). The Mayer Brown Practices are established in various jurisdictions and may be a legal person or a partnership. PK Wong & Nair LLC ("PKWN") is the constituent Singapore law practice of our licensed joint law venture in Singapore, Mayer Brown PK Wong & Nair Pte. Ltd. Details of the individual Mayer Brown Practices and PKWN can be found in the Legal Notices section of our website. "Mayer Brown" and the Mayer Brown logo are the trademarks of Mayer Brown.

© Copyright 2026. The Mayer Brown Practices. All rights reserved.

This Mayer Brown article provides information and comments on legal issues and developments of interest. The foregoing is not a comprehensive treatment of the subject matter covered and is not intended to provide legal advice. Readers should seek specific legal advice before taking any action with respect to the matters discussed herein.

See more popular content from