Three California AI Laws Take Effect Simultaneously

On January 1, 2026 three California AI laws became effective: SB 942 (AI Transparency Act — covered providers must offer detection tools and apply latent disclosures); AB 2013 (training data transparency — developers must publicly post training data summaries); and SB 53 (frontier AI transparency). Combined, these laws make California the most ambitious U.S. AI-regulating jurisdiction by scope, though enforcement focus is expected to begin gradually.

Source: oag.ca.gov