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AI regulation in California (United States)

Source-linked 1 instrument · 1 binding

Overview

California regulates AI through a set of targeted statutes and privacy rules rather than one AI act. Senate Bill 53, the Transparency in Frontier Artificial Intelligence Act signed in September 2025, requires large frontier-model developers to publish safety frameworks and report critical safety incidents. The California Privacy Protection Agency has adopted regulations on automated decision-making technology under the CCPA, and earlier laws cover AI-generated content disclosure, training-data transparency (AB 2013) and AI in healthcare communications.

What is the current regulatory status?

Several binding statutes in force or with 2026 effective dates; SB 53 operative from 1 January 2026. The state's privacy regulator also enforces automated-decision-making rules. A reviewer must confirm current effective dates and any federal pre-emption disputes.

Binding rules versus guidance

Binding: SB 53 (frontier models), AB 2013 (training-data transparency), CCPA and CPPA regulations on automated decision-making technology, and sector laws. Guidance: Attorney General advisories on AI and existing law.

Key policy instruments

California (United States) Act / statute In force Binding

California SB 53

California SB 53: Transparency in Frontier Artificial Intelligence Act

SB 53 requires "large frontier developers" (developers of the most compute-intensive models above statutory thresholds) to publish a frontier AI framework describing how they assess and mitigate catastrophic risks, publish transparency reports when deploying new frontier models, report critical safety incidents to the California Office of Emergency Services, and protect employees who report safety concerns. It also directs creation of a public computing cluster ("CalCompute").

Applies from 1 Jan 2026 Source-linked Official source

Upcoming deadlines

No scheduled future dates recorded. Past milestones are listed on each policy page.

Current priorities

Frontier-model safety transparency, automated decision-making rules under the CCPA, and AI-generated content provenance.

Latest changes

1 Jan 2026 California (United States) High In force

California SB 53 frontier-model transparency duties become operative

California SB 53 SB 53 Transparency in Frontier Artificial Intelligence Act Source-linked

29 Sep 2025 California (United States) High Adopted

California enacts the Transparency in Frontier Artificial Intelligence Act (SB 53)

California SB 53 SB 53 Transparency in Frontier Artificial Intelligence Act Source-linked

Applicable sectors, use cases and obligation areas

Use cases: Generative AI and foundation models
Sectors: Cross-sector / all sectors
Obligation areas: incident handling (1)safety testing (1)

How to use this information

Check whether you meet SB 53 thresholds for a "large frontier developer".
If you process Californians' personal data with automated decision-making technology, review the CPPA regulations.
Review disclosure duties for generative-AI outputs and training data.

Official government and regulator sources

SB 53 Transparency in Frontier Artificial Intelligence Act
California Legislative Information · 2025-09-29 · Tier 1 source

Informational only, not legal advice. Verify every claim against the linked official sources and consult qualified counsel before acting.