Law / United States / 
California
Generative AI Training Data Transparency Act (AB 2013)
Cal. Civ. Code Sections 3110 and 3111
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.
An AI training data rule binding public and private bodies.
As of 14 August 2026.
What it requires
- Post training-data documentation on your website before making a generative AI system publicly available to Californians, and again before any substantial modification
- Cover the datasets and their sources and owners, an approximate count and description of the data points, whether the data includes copyrighted or personal information, and whether synthetic data generation was used
- The duty reaches systems first made publicly available on or after 2022-01-01
If you get it wrong
Criminal exposureNo
Private right of actionNo
Who enforces it
Enforcement body
No dedicated regulator, civil penalty, or private right of action is stated in Title 15.2 (Sections 3110 and 3111) itself; the full text of Sections 3110 and 3111 contains no enforcement, remedy, or penalty provision. A violation could be reached only through the general Unfair Competition Law (Bus. and Prof. Code section 17200 et seq.), enforceable by the Attorney General or a district attorney.
What it reaches
How the hook was established
express
What makes it apply
Market targeting
Obligation class
Disclosure
What it makes you log
Who may demand the log
Public
What the log must hold
Data lineage
Logging duty
Section 3111 requires a developer to post training-data documentation on its own website before the system is made available and before each substantial modification. It never uses the words log, record, event recording, or audit trail; it requires posting documentation, which is the implicit category's own verb, and the document must persist on the website rather than being a one-time disclosure at the point of output.
- Kind
- Implicit
- As of
- 21 September 2026
- Provision
- Section 3111
- Trigger
- content_generation
Who checks it
Audit expectation
none
What this law does
Drafted with AI from the cited sources under the direction of UnGovr staff. UnGovr holds editorial responsibility for this page.
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 1 January 2022, though it did not attach until the 1 January 2026 operative date, now past. This corrects the derived citation on record, Civil Code Section 22756 et seq., which does not exist in Civil Code; confirmed against leginfo, the correct codification is Title 15.2 (commencing with Section 3110), Sections 3110 and 3111.
When LexLint raises it
trains_modelsgenerates_content
Read the law
official California Legislative Information (leginfo) chaptered bill text
Every line above is drawn from the primary source linked here, read on the date shown. This is a research summary, not legal advice.