CaliforniaIn force
California Business and Professions Code Chapter 25.1 took effect on 1 January 2026.
Open sourceCanonical policy ask · Frontier safety
Require large frontier developers to publish catastrophic-risk safety frameworks
Require covered large frontier developers to write, implement, comply with and publish a frontier AI framework covering catastrophic-risk assessment, mitigations and related disclosures.
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Events and deadlines- 2025-09-29California SB 53 chaptered into law
SB 53 was approved by the Governor and chaptered as Chapter 138, Statutes of 2025.
- 2026-01-01California frontier AI transparency duties take effect
Chapter 25.1 of the Business and Professions Code became effective.
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California requires large frontier developers to publish a frontier AI framework
Business and Professions Code section 22757.12(a) requires covered developers to write, implement, comply with and publish a frontier AI framework.
A large frontier developer shall write, implement, comply with, and clearly and conspicuously publish on its internet website a frontier AI framework that applies to the large frontier developer’s frontier models and describes how the large frontier developer approaches all of the following:California Legislative Information · Cal. Bus. & Prof. Code § 22757.12(a)
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California’s frontier AI transparency chapter took effect on 1 January 2026
The chaptered statute records an effective date of 1 January 2026.
(Added by Stats. 2025, Ch. 138, Sec. 2. (SB 53) Effective January 1, 2026.)California Legislative Information · Cal. Bus. & Prof. Code § 22757.10 historical note