AB 2013 (Training Data Transparency)
Generative AI: Training Data Transparency Act (AB 2013)
California · Cal. Civ. Code §§ 3110–3111 (AB 2013, Stats. 2024)
- Status
- In effect
- Took effect
- January 1, 2026
- Applies to
- Developers of generative AI systems made available to Californians (including substantial modifiers)
- Enforced by
- Not specified in statute (no express enforcement mechanism)
Developers of generative AI systems made available to Californians must publicly post documentation about the datasets used to train their models, including sources, whether they contain personal information or copyrighted material, and time periods of collection. Applies to systems released or substantially modified since January 1, 2022.
Who is protected: California public, creators, and data subjects
Legal detail
Adds Cal. Civ. Code §§ 3110–3111, requiring GenAI developers to post high-level training-dataset documentation (12 enumerated categories) before making a system publicly available in California, effective Jan. 1, 2026.
Key facts
| Jurisdiction | California |
|---|---|
| Level | State |
| Strength | Limited |
| Enacted | September 28, 2024 |
| Citation | Cal. Civ. Code §§ 3110–3111 (AB 2013, Stats. 2024) |
| Topics | AI disclosure and transparency · copyright and training data · consumer data privacy · consumer protection |
| Bill text | California Legislative Information: AB 2013 (2023–2024) |
More AI rules in California
- CA EO N-6-26 (AI Workforce) · In effect
- California AB 489 (AI healthcare chatbot misrepresentation ban) · In effect
- X.AI v. Bonta (AB 2013 training-data disclosure) · Blocked / in litigation
- CA SB 1168 — data center grid cost allocation · Enacted (not yet in effect)
- California SB 1119 Adam's Law, companion chatbots (2026) · Enacted (not yet in effect)
- California SB 867 AI chatbot toy moratorium (2026) · Enacted (not yet in effect)
Related AI disclosure and transparency rules elsewhere
- Trump AI Innovation & Security EO (June 2026) · In effect
- FERC order directing PJM and other grid operators to reform tariffs on… · Enacted (not yet in effect)
- Morris County resolution urging state oversight of data center power… · Enacted (not yet in effect)
- SU-47 Special-Use Data Center Zoning District Ordinance · Proposed / pending
- Cherokee Nation EO 2026-02-CTH (Data Center Task Force) · In effect
- NAIC AI Evaluation Tool Pilot (12 states, 2026) · Proposed / pending
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