California AI Transparency Act (SB 942)
California AI Transparency Act (SB 942, as amended by AB 853)
Covered providers of generative AI systems must offer a free AI-detection tool and embed disclosures and provenance data in AI-generated content. AB 853 (Chapter 674, Statutes of 2025) moved the operative date to 2 August 2026 and added duties for large online platforms and generative-AI hosting platforms.