Big platforms must show users whether content carries AI or camera provenance data
Large online platforms with over 2 million monthly users must detect provenance data on content and let users see whether it was made or altered by AI. AI hosting sites can't knowingly offer AI systems that skip required disclosures.
Who it affects
Large social media, search, file-sharing and messaging platforms, and AI hosting sites
When
This law took effect on January 1, 2026, but the changes described here start on January 1, 2027.
- : Signed into law
- : Law took effect
- : The changes described here start to apply
- : New cameras and phones must offer an option to tag content
Official text
California AB 853: California AI Transparency Act.
On California Legislative Information. The official text is what counts; read it before you act.
Not legal advice. Plain-English summaries to help you find what changes and when. Not legal advice: read the official text, and ask a lawyer about your situation.