Rules · California

California’s training-data law last changed on 1 Jan 2026

California generative AI training data transparency law. A developer of a generative AI system or service made available to Californians must post documentation about the data used to train it.

AB 2013, Chapter 817, Statutes of 2024 (Civ. Code § 3110 et seq.) · in force

Every date

in date order · as of 12 Nov 2026

1 Jan 2026 require training-data documentation A developer must post documentation about the data used to train each generative AI system or service, released on or after January 1, 2022, that it makes available to Californians, and again before each later release or substantial change. For: developers of generative AI systems or services. 3111. On or before January 1, 2026, and before each time thereafter that a generative artificial intelligence system or service, or a substantial modification to a generative artificial intelligence system or service, released on or after January 1, 2022, is made publicly available to Californians for use — AB 2013 (2024), Chapter 817, Statutes of 2024, as chaptered

Sources

rules.csv rules.ics Every dataset → Status → Glossary →

California Legislature, Legislative Counsel: AB 2013 (2024), Chapter 817, Statutes of 2024, as chaptered (chaptered bill text, from the Legislature's pubinfo file), read 27 Oct 2026; the copy kept 27 Oct 2026 has sha256 421bd2026bb2.