AI Training Data Transparency Act (AB 2013)

Cal. Civ. Code §§ 3110-3111 (AB 2013, Ch. 817, Statutes of 2024)

A citation is an address, not a summary. The first part names the law; what follows narrows it to the exact section, article or paragraph.

What follows is LexLint's own research summary of this law, not legal advice.

In force 9 months, effective 1 January 2026.

A crawl signals rule binding public and private bodies.

As of 29 August 2026.

What it requires

If you develop a generative AI system made available to Californians, publicly post documentation of your training datasets before each release or substantial modification, starting January 1, 2026.
State whether those datasets include copyrighted, trademarked, or patented data, and whether they include personal information.
Track this documentation duty against Civ. Code §§ 3110-3111, not the Bus. & Prof. Code citation some sources still use.

What this law does

Drafted with AI from the cited sources under the direction of UnGovr staff. UnGovr holds editorial responsibility for this page.

AB 2013 requires developers of generative AI systems made available to Californians, released or substantially modified since January 1, 2022, to publicly post documentation of their training datasets, including whether the datasets include data protected by copyright, trademark, or patent, and whether they include personal information as defined in Civ. Code § 1798.140. The duty commences January 1, 2026 and repeats before each subsequent release or substantial modification.

The corpus previously carried this instrument's citation as Bus. & Prof. Code §§ 22756.9-22757.1; the chaptered bill text confirms AB 2013 in fact adds Title 15.2 (commencing with Section 3110) to Part 4 of Division 3 of the Civil Code, chaptered September 28, 2024 as Chapter 817, Statutes of 2024, and that correction is reflected here. A federal district court denied a preliminary injunction against enforcement in X.AI LLC v. Bonta (C.D. Cal., Mar.

4, 2026, secondary-sourced), finding no likelihood of success on trade-secret or constitutional claims without reaching the law's ultimate validity, so the law remains in effect subject to that ongoing litigation.

When LexLint raises it

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Read the law

official chaptered bill text, California Legislative Information (leginfo.legislature.ca.gov)

Every line above is drawn from the primary source linked here, read on the date shown. This is a research summary, not legal advice.

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