California AI Transparency Act, SB 942 as amended by AB 853
Enacted in force
Jurisdiction
California [source]
Applies to
Covered GenAI providers with >1 million monthly visitors/users, publicly accessible in California: free detection tools and provenance/disclosure duties. Separate platform/hosting duties begin January 1, 2027; capture-device provisions begin January 1, 2028. [source]
Penalty
Unverified
Detail review
Accepted record facts reviewed
Nov 13, 2026
In plain English
- Covered GenAI providers with >1 million monthly visitors/users, publicly accessible in California: free detection tools and provenance/disclosure duties. Primary source
- Separate platform/hosting duties begin January 1, 2027; capture-device provisions begin January 1, 2028. Primary source
- Covered providers supply free detection tools. Primary source
- Meet the applicable provenance and disclosure duties; platform/hosting and capture-device duties have later milestones. Primary source
Dates and phased obligations
August 2, 2026 operative date Primary source
· operative
Covered provider duties become operative. Primary source
· operative
Separate platform/hosting duties begin. Primary source
· operative
Capture-device provisions begin. Primary source
Questions from this record
Who does CA SB 942 / AB 853 cover?
Covered GenAI providers with >1 million monthly visitors/users, publicly accessible in California: free detection tools and provenance/disclosure duties. Separate platform/hosting duties begin January 1, 2027; capture-device provisions begin January 1, 2028. Primary source
What is the law’s status?
Enacted / in force Primary source
What date does this record track?
August 2, 2026 operative date Primary source
Has this record been verified?
This record’s accepted facts were last reviewed on 2026-11-13; unsupported comparison fields remain Unverified. Primary source
Primary sources
Verification history
Not legal advice. This page restates the linked record and does not determine whether a particular business is covered. Methodology and verification limits.
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