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Rules / California

Generative Artificial Intelligence: Training Data Transparency (AB 2013)

In forceLawBinding

Requires developers of generative AI systems made available to Californians (released or substantially modified since 1 Jan 2022) to post documentation on their websites about training data, including dataset sources, data types, whether copyrighted or personal information is included, and collection periods. Narrow exemptions cover security, aircraft and federal defence systems.

Why it matters

Every public-facing generative AI provider must maintain a public training-data summary; a federal court refused to block the law in March 2026.

What it requires

Copyright and training dataTransparency to usersData governance

Key obligations, provision by provision

2 obligations in article order. How IDs work

  1. WTA-R-US-CA-0002-001Civil Code Section 3111DevelopersSince 1 Jan 2026

    Post training-data documentation on your website for each generative AI system or substantial modification released since 1 Jan 2022 and made available to Californians, by 1 Jan 2026 and before each later release.

  2. WTA-R-US-CA-0002-002Civil Code Section 3111(a)(1)-(12)DevelopersSince 1 Jan 2026

    Include a high-level dataset summary covering sources, purpose, size, data types, copyright or licence status, personal or aggregate consumer information, cleaning, collection periods, first-use dates and synthetic data use.

SourceCalifornia Legislative Information: https://leginfo.legislature.ca.gov/faces/billStatusClient.xhtml?bill_id=202320240AB2013Secondary: https://ppc.land/court-denies-xais-bid-to-block-california-ai-training-data-law/ Checked against the source on 4 Oct 2026. Chapter 817, Statutes of 2024. X.AI LLC v. Bonta (C.D. Cal., No. 2:25-cv-12295): preliminary injunction denied 4 Mar 2026; court found the law likely regulates commercial speech.

Cite this record

WTA-R-US-CA-0002: Generative Artificial Intelligence: Training Data Transparency (AB 2013). California Legislature / Governor. wheresthe.ai, https://wheresthe.ai/rule/us-ca-ab2013-training-data-transparency-2024/ (checked 4 Oct 2026).

History

  • Effective changed from 1 Jan 2025 to 1 Jan 2026

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