California training-data transparency law (AB 2013): requirements, deadlines and compliance actions
California AB 2013: Generative artificial intelligence: training data transparency (Chapter 817, Statutes of 2024)
What this label means
- Verified
- — a named reviewer opened the official source and confirmed the record; the date and the reviewer are shown.
- Pending review
- — linked to the official source and in the queue for a reviewer to confirm.
- Source-linked
- — linked to the official source, not yet confirmed by a reviewer.
On this page 7 sections
In brief
The California training-data transparency law (AB 2013) is a binding act of California (United States), issued by California State Legislature. It has been in force since 1 January 2025; its first obligations applied from 1 January 2026. Every record here links to its official source and states its verification status.
- Jurisdiction
- California (United States)
- Instrument type
- Act / statute
- Status
- In force
- Legal force
- Binding
- Issuing body
- California State Legislature
- Adopted
- 28 September 2024
- In force
- 1 January 2025
- Applies from
- 1 January 2026
- Official source
- California Legislative Information: AB 2013 (2023-2024) status
- Verification
- Pending review · source-linked, checked 15 Oct 2026
What is the California training-data transparency law (AB 2013)?
Developers of generative AI systems made available to Californians must post documentation of the data used to train them on their websites, including summaries of the datasets, whether they include copyrighted material, whether they were purchased or licensed, and whether they include personal information.
Status note: Recorded on 15 October 2026 from search-engine extracts of the official pages listed; the official text could not be opened from the research environment, so every date and duty here is pending review against it.
Who does it apply to?
Generative AI systems or services released on or after 1 January 2022 and made available to Californians; certain security, aircraft and national-security systems are exempt.
Developers of generative AI systems and services offered to people in California.
- Sectors
- Cross-sector / all sectors
- AI use cases
- Generative AI and foundation models
- Risk categories
- Transparency obligations
- AI system types
- General-purpose AI modelGenerative AI system
When do the requirements apply?
Chaptered 28 September 2024; effective 1 January 2025; documentation due by 1 January 2026.
Dates as stated in search extracts of the official source; confirm against it.
Official sources
-
California Legislative Information: AB 2013 (2023-2024) status
California Legislative Information · 28 Sep 2024 · Tier 1 source
Cite this record
AIPolicyTracker (2026). “California training-data transparency law (AB 2013)” [AIPT-POL-0206, record version 1, not yet verified]. https://aipolicytracker.org/id/AIPT-POL-0206 (accessed 21 October 2026). Data licensed CC BY 4.0.
Permanent id AIPT-POL-0206: it never changes or gets reused, and its address keeps working if this page moves.
Cite the official text alongside it: California Legislative Information: AB 2013 (2023-2024) status, California Legislative Information, https://leginfo.legislature.ca.gov/faces/billStatusClient.xhtml?bill_id=202320240AB2013.
BibTeX
@misc{aipolicytracker2026_californiatrainingdatatr,
author = {{AIPolicyTracker}},
title = {{California training-data transparency law (AB 2013)}},
year = {2026},
howpublished = {\url{https://aipolicytracker.org/policies/us-california-ab-2013-training-data-transparency}},
url = {https://aipolicytracker.org/policies/us-california-ab-2013-training-data-transparency},
urldate = {2026-10-21},
note = {Data licensed CC BY 4.0. Accessed 21 October 2026}
}
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Change history
Record history
No change to this record's tracked fields has been recorded since 15 October 2026, when field-level history began.
Record version 1: Added in the October 2026 sub-national research round. Recorded on 15 October 2026 from search-engine extracts of the official pages listed; the official text could not be opened from the research environment, so every date and duty here is pending review against it. Every earlier wording is in the GitHub repository.
Frequently asked questions
Is the California training-data transparency law (AB 2013) in force?
Yes. The California training-data transparency law (AB 2013) is in force since 1 January 2025.
Is the California training-data transparency law (AB 2013) legally binding?
Yes. The California training-data transparency law (AB 2013) is a binding act / statute; the obligations it creates are legal requirements for the actors it covers.
Who does the California training-data transparency law (AB 2013) apply to?
Generative AI systems or services released on or after 1 January 2022 and made available to Californians; certain security, aircraft and national-security systems are exempt.
When does the California training-data transparency law (AB 2013) apply?
Chaptered 28 September 2024; effective 1 January 2025; documentation due by 1 January 2026.
Where is the official text of the California training-data transparency law (AB 2013)?
The official text is published by California Legislative Information at https://leginfo.legislature.ca.gov/faces/billStatusClient.xhtml?bill_id=202320240AB2013 (California Legislative Information: AB 2013 (2023-2024) status). This record links to it and is checked against it.
Disclaimer: informational only, not legal advice. Verify every claim against the linked official sources and consult a qualified lawyer before acting.