Progress

Current status
adopted
01 Jan 2028 in force
01 Jan 2027 in force
02 Aug 2026 in grace period
13 Oct 2025 adopted
12 Sep 2025 adopted
02 Jun 2025 under deliberation
19 Feb 2025 under deliberation

Scope

Implementers
United States of America
Policy Area
Design and testing standards
Policy Instrument
Design requirement
Regulated Economic Activity
online advertising provider
platform intermediary: user-generated content
ML and AI development
search service provider
platform intermediary: other
Government Branch
legislature
executive
Government Body
parliament
central government
Implementation Level
subnational

Timeline of events

01 Jan 2028
in force

California AI Transparency Act including design requirements for capture-device manufacturers enter into force

On 1 January 2028, the California Artificial Intelligence (AI) Transparency Act, including design requirements for capture device manufacturers enter into force. The Act requires capture device manufacturers to design devices to embed latent disclos…

Source
Event type law
Action type implementation
Government branch legislature
Government body parliament
01 Jan 2027
in force

California AI Transparency Act including design requirements for large online platforms and covered providers enter into force

On 1 January 2027, the California Artificial Intelligence (AI) Transparency Act, including design requirements for large online platforms and covered providers enter into force. It provides that large online platforms must detect and disclose proven…

Source
Event type law
Action type implementation
Government branch legislature
Government body parliament
02 Aug 2026
in grace period

California AI Transparency Act including design requirements enters into force with grace period

On 2 August 2026, the California Artificial Intelligence (AI) Transparency Act enters into force with grace period, introducing design obligations for generative artificial intelligence systems, large online platforms, and capture-device manufacture…

Source
Event type law
Action type in force with grace period
Government branch legislature
Government body parliament
13 Oct 2025
adopted

California AI Transparency Act including design requirements was signed by Governor of California

On 13 October 2025, the California Artificial Intelligence (AI) Transparency Act was signed by the Governor of California. The Act seeks to establish design requirements for generative AI systems, large online platforms, and capture-device manufact…

Source
Event type law
Action type signing
Government branch executive
Government body central government
12 Sep 2025
adopted

California AI Transparency Act including design requirements was adopted by California State Legislature

On 12 September 2025, the California Artificial Intelligence (AI) Transparency Act was adopted by the California State Legislature. The Act seeks to establish design requirements for generative AI systems, large online platforms, and capture-device…

Source
Event type law
Action type adoption
Government branch legislature
Government body parliament
02 Jun 2025
under deliberation

California AI Transparency Act including design requirements was passed by California State Assembly

On 2 June 2025, the California Artificial Intelligence (AI) Transparency Act was passed by the California State Assembly. The Act seeks to establish design requirements for generative AI systems, large online platforms, and capture-device manufactur…

Source
Event type law
Action type passage
Government branch legislature
Government body parliament
19 Feb 2025
under deliberation

California AI Transparency Act including design requirements was introduced to California State Assembly

On 19 February 2025, the California Artificial Intelligence (AI) Transparency Act was introduced to the California State Assembly. The Act seeks to establish design requirements for generative AI systems, large online platforms, and capture-device …

Source
Event type law
Action type introduction
Government branch legislature
Government body parliament