What are the California AB 2013 (AI training data transparency) compliance deadlines?

Sep 28, 2024: AB 2013 signed. Jan 1, 2026: Training-data documentation due.

What are the penalties under California AB 2013 (AI training data transparency)?

The statute sets no specific penalty. Enforcement would rely on general California law, for example the Unfair Competition Law.

California AB 2013 (AI training data transparency)

In force California · In force Jan 1, 2026 · no upcoming deadlines

Official text

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Deadlines

ComplianceJan 1 · 10 months ago · Source

Training-data documentation dueDocumentation must be posted for GenAI systems released since January 1, 2022, and before each later release or substantial modification.

MilestoneSep 28, 2024 · 2.1 years ago · Source

AB 2013 signedAB 2013 chaptered (ch. 817).

Summaries for reference, not legal advice. Check the official text.

What it does

Developers of generative AI systems made publicly available to Californians must post documentation of the training data on their websites. It must cover a high-level summary of the datasets, their sources and owners, the number of data points, the types of data, whether the data includes copyrighted material or personal information, whether it was licensed or purchased, cleaning and processing steps, collection periods, and whether synthetic data was used.

Who it applies to: Any developer, including those that substantially modify a system, of a generative AI system or service released on or after January 1, 2022 and publicly available to Californians. Exempt: systems whose sole purpose is security and integrity, systems for operating aircraft in national airspace, and systems for federal national security, military or defense purposes. No size threshold.
Penalties: The statute sets no specific penalty. Enforcement would rely on general California law, for example the Unfair Competition Law.
Enforced by: Not specified in statute (California Attorney General under general consumer protection law)
Official name: California AB 2013, Generative Artificial Intelligence: Training Data Transparency (Stats. 2024, ch. 817)
Citation: AB 2013 (2024), Stats. 2024, ch. 817; Civ. Code 3110-3111
Topics: AI, Privacy

Verified 2026-09-22

Research notes

Enforcement route is not explicit in the statute. Constitutional challenges to AB 2013 were reported but not verified for this record.

EnactedAlabama

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AmendedCalifornia

CCPA / CPRAGives California residents (including employees and B2B contacts) rights to know, delete, correct, and opt out of sale/sharing of personal information and to limit use of sensitive personal information. CPPA regulations approved Sept 22, 2025 (effective Jan 1, 2026) add automated decisionmaking technology (ADMT) rights, mandatory risk assessments with submissions to the agency, and annual independent cybersecurity audits. AB 566 (2025) requires browsers to offer an opt-out preference signal from Jan 1, 2027.Next: Jan 1, 2027 ADMT requirements compliance date · in 2 months

In forceCalifornia

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EnactedCalifornia

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AmendedCalifornia

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In forceCalifornia

California AI autonomous-harm defense banA defendant that developed, modified or used AI cannot argue in a civil case that the AI acted autonomously and so caused the harm on its own. Other defenses such as causation and comparative fault remain.In effect since Jan 1, 2026

In forceCalifornia

California Delete Act / DROPRequires data brokers to register annually with the California Privacy Protection Agency and to process consumer deletion requests submitted through the agency's Delete Request and Opt-out Platform (DROP). DROP opened to consumers Jan 1, 2026; from Aug 1, 2026 brokers must pull and process requests at least every 45 days. Brokers face independent compliance audits every three years from 2028.Next: Jan 31, 2027 Annual data broker registration deadline · in 3 months

Questions about California AB 2013 (AI training data transparency)

What are the California AB 2013 (AI training data transparency) compliance deadlines?: Sep 28, 2024: AB 2013 signed. Jan 1, 2026: Training-data documentation due.
When does California AB 2013 (AI training data transparency) take effect?: California AB 2013 (AI training data transparency) took effect on Jan 1, 2026.
Who does California AB 2013 (AI training data transparency) apply to?: Any developer, including those that substantially modify a system, of a generative AI system or service released on or after January 1, 2022 and publicly available to Californians. Exempt: systems whose sole purpose is security and integrity, systems for operating aircraft in national airspace, and systems for federal national security, military or defense purposes. No size threshold.
What are the penalties under California AB 2013 (AI training data transparency)?: The statute sets no specific penalty. Enforcement would rely on general California law, for example the Unfair Competition Law.

Deadlines

What it does

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