SB 942 · Dated log
SB 942 updates: every change, dated
Every amendment and official step since SB 942 was signed, newest first, with its source. Get updates.
Changes to the law
SB 1000 and AB 2713 signed
SB 1000 and AB 2713 signed. SB 1000 takes effect immediately as an urgency statute and amends the covered-provider duties; AB 2713 amends the large online platform duties from 1 January 2027.
Source: SB 1000 (Chapter 861) and AB 2713 (Chapter 856), Statutes of 2026
SB 942 provider duties operative
Covered-provider duties under SB 942 become operative.
Source: AB 853, chaptered text
AB 853 signed
AB 853 signed. The operative date of the covered-provider duties moved from 1 January 2026 to 2 August 2026, and duties were added for large online platforms, GenAI hosting platforms and capture device manufacturers.
Source: AB 853, chaptered text
SB 942 signed
SB 942, the California AI Transparency Act, signed and chaptered.
Source: SB 942, chaptered text (leginfo)
Changes to this site
Topic pages and a dated updates log
Each part of the law now has its own page with the statute wording and common questions, and this updates log lists every change with its source.
SB 942 and Article 50 compared
A side-by-side comparison of SB 942 and EU AI Act Article 50: who must mark, what the mark contains, visible labels, detection, exemptions, dates and penalties.
Pages updated for SB 1000 and AB 2713
Every section now reflects SB 1000 and AB 2713: no user threshold, the disclosure verification tool, the fifth latent-disclosure field, the 72-hour licensee rule and the amended platform duties.
Site launched
Site launched with statute summaries, dates, penalties and technology profiles.
Other sections
Who is covered
Anyone producing a generative AI system the public can use in California, whatever its size. The exemptions are narrow.
Who is covered → § 22757.3(a)The latent disclosure
The hidden label image, video and audio output must carry, field by field.
The five fields → § 22757.2, § 22757.3(b)Verification tool and licensees
The free tool anyone can use to check your content, and the 72-hour licensee clock.
Tool and licensees → AB 853, AB 2713Platforms, hosts and capture devices
Duties for large online platforms and GenAI hosting platforms from 2027, and capture device makers from 2028.
AB 853 duties → ComparisonSB 942 vs EU AI Act
The California and EU marking rules row by row: who, what, labels, detection, dates and penalties.
Side by side → TimelineDates and penalties
Every operative date from 2024 to 2029, and the $5,000 per day civil penalty.
Dates and penalties →