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ARTICLE · 24 OCTOBER 2025

California's New Regulations For Developers Of Frontier AI Models: What To Know About The Transparency In Frontier Artificial Intelligence Act

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On September 29, 2025, California Governor Gavin Newsom signed into law Senate Bill 53 ("SB 53"), which includes the Transparency in Frontier Artificial Intelligence Act ("TFAIA").

United StatesTechnology
Ariel House
Ariel House

On September 29, 2025, California Governor Gavin Newsom signed into law Senate Bill 53 ("SB 53"), which includes the Transparency in Frontier Artificial Intelligence Act ("TFAIA"). This new law makes California the first state to enact a statute that specifically addresses frontier artificial intelligence ("AI") development.

The TFAIA is expected to take effect on January 1, 2026. For developers of AI models, the law imposes significant new requirements that demand prompt attention, to avoid civil penalties of up to $1 million per violation.

Background of the Legislation

The Trump Administration has prioritized AI innovation through deregulation, and Congress has never passed any comprehensive federal legislation regulating AI development. Just a few months ago, Congress considered—but ultimately failed to pass—a 10-year ban on most state and local AI laws and regulations. As a result, states currently retain the authority to enact and enforce their own

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