Law note · California

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

Citation	Cal. Bus. and Prof. Code Sections 22757 to 22757.6
Status	In effect
In force	2026-08-02
Reviewed	as of 2026-08-14

A covered provider of a generative AI system with more than 1,000,000 monthly California users must offer a manifest disclosure option (a visible AI-generated content label), embed a latent disclosure of machine-readable provenance data in content it creates, and provide a free public AI-content detection tool. AB 853 (2025) moved the operative date from 2026-01-01 to 2026-08-02, now past, and layered on later duties for large online platforms and GenAI hosting platforms effective 2027-01-01, and for capture device manufacturers effective 2028-01-01, neither yet in effect. Reviewer verification against leginfo confirms Chapter 25 (commencing with Section 22757) was added to Division 8 of the Business and Professions Code, with sections running 22757 through 22757.6 (definitions, detection tool, disclosure duties, penalties, exemptions, and operative date); the Section 22756 to 22756.6 range recorded on an earlier pass does not exist and was an error.

Primary source: official California Legislative Information (leginfo) chaptered bill text, both SB 942 and its AB 853 amendment

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