California AB 853 amends the California AI Transparency Act (SB 942) and pushes its compliance deadline for generative AI providers to August 2, 2026. The amendments took effect January 1, 2026 and expand the Act well beyond AI developers, phasing in new obligations over the following two years.
How California AB 853 Expands the Transparency Act
Starting January 1, 2027, large online platforms must detect provenance data in uploaded content, let users inspect it, and must not strip provenance data or digital signatures from content. Generative AI hosting platforms cannot knowingly host systems that lack required disclosure features as of that same date.
Capture Devices Join the Chain in 2028
Starting January 1, 2028, capture device manufacturers, such as camera and smartphone makers, must offer and default-enable embedded provenance disclosures identifying the device and when content was captured. Together with SB 942, this builds a full content authenticity chain from capture to distribution. Businesses that host, distribute, or capture digital content for California users should map which deadline applies to them and plan for provenance support well before each date arrives.
Source: California Legislative Information: AB 853
Report a violation: If you believe a business is violating this law, you can file a complaint with the California Attorney General Consumer Protection.
