California AB 2013
The most consequential training-data disclosure mandate in the US: it forces public documentation that plaintiffs in copyright litigation and privacy regulators can mine, effectively ending 'trade secret' silence about what frontier models are trained on.
What it is
Requires developers of generative AI systems made available in California to publish documentation of training datasets — sources, whether copyrighted or personal data is included, and collection periods — for systems released since January 2022.
Who is affected
The most consequential training-data disclosure mandate in the US: it forces public documentation that plaintiffs in copyright litigation and privacy regulators can mine, effectively ending 'trade secret' silence about what frontier models are trained on.
Key obligations
- Publish high-level training-data summaries on developer websites
- Disclose use of copyrighted, licensed and personal data, and synthetic data
Recent signals
Connecticut's AI and online safety law takes effect
Public Act 26-15 and companion privacy amendments took effect, covering AI chatbot disclosures, facial recognition and surveillance pricing.
California enacts SB 574 on lawyers' and arbitrators' use of generative AI
The first state statute on attorney AI use. It bars delegating the practice of law to generative AI and requires lawyers to verify citations and disclose AI use in court filings. Arbitrators may not delegate decisions to AI. It takes effect 1 January 2027.
New York sets frontier developer registration for November
Governor Hochul announced that frontier AI developers must register with the state from November 2026 under the RAISE Act, with full duties from January 2027.
California signs SB 813 and AB 1405 on independent AI verification
Governor Newsom signed the first US laws creating accredited AI verification organisations and standards for AI auditors, calling on the federal government to follow.
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