California AI Transparency Act (SB 942 as amended by AB 853 and SB 1000)

California AI Transparency Act

Summary

Every provider of a publicly accessible generative AI system in California must offer a free disclosure verification tool and embed latent disclosures in generated media; large platforms must display provenance; capture-device makers must embed disclosures. SB 1000 removed the 1,000,000-user threshold. $5,000 per violation per day.

Who it applies to

Role: provider. Sectors: all. Territory: California.

Key dates

Aug 2, 2026Operative (in force)

Sep 30, 2026SB 1000 effective as an urgency statute; user threshold removed (other)

Jan 1, 2027Platform and hosting-platform duties (applies from)

Jan 1, 2028Capture-device duties (applies from)

Obligations at a glance

Offer a free disclosure verification tool and embed latent disclosures in generated media for any publicly accessible generative AI system.
Applies from Aug 2, 2026 · Baseline B15

See how these apply to you with What applies to me.

Official sources

https://aicomplianceatlas.com/law/california-sb-942

On the Wire

Oct 31, 2026

California removes the user threshold from its AI Transparency Act

SB 1000 applies the disclosure-tool and latent-disclosure duties to every provider of a publicly accessible generative AI system in the state.

California

Change log

Nov 2, 2026Entry created from seed data. (seed)

Next date

Jan 1, 2027

Platform and hosting-platform duties

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Licence

Entry data is ODbL 1.0. Cite as: AI Governance Commons by Synthetic Labs, California AI Transparency Act, retrieved Nov 4, 2026.

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