Law note · California

Generative AI Training Data Transparency Act (AB 2013)

Citation	Cal. Civ. Code Sections 3110 and 3111
Status	In effect
In force	2026-01-01
Reviewed	as of 2026-08-14

A developer of a generative AI system made publicly available to Californians must post on its website, before making the system available and before any substantial modification, documentation describing the training data: a high-level summary of the datasets, their sources and owners, an approximate count and description of data points, whether the data includes copyrighted or personal information, and whether synthetic data generation was used. The posting duty reaches systems first made publicly available on or after 2022-01-01, though it did not attach until the 2026-01-01 operative date, now past. This corrects the derived citation on record, Civil Code Section 22756 et seq., which does not exist in Civil Code; reviewer verification against leginfo confirms the correct codification is Title 15.2 (commencing with Section 3110), Sections 3110 and 3111.

Primary source: official California Legislative Information (leginfo) chaptered bill text, read directly

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