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ARTICLE · 06 OCTOBER 2025

Transparency In Frontier Artificial Intelligence Act (SB-53): California Requires New Standardized AI Safety Disclosures

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On September 29, California Governor Gavin Newsom signed into law the Transparency in Frontier Artificial Intelligence Act (""), making California the first state to require public...

United StatesTechnology
Arianna Evers
Arianna Evers
Joshua A. Geltzer
Joshua A. Geltzer
Susan J. Hennessey
Susan J. Hennessey
Hilary Hurd
Hilary Hurd
Bardia Vaseghi
Bardia Vaseghi
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On September 29, California Governor Gavin Newsom signed into law the Transparency in Frontier Artificial Intelligence Act (TFAIA or SB-53), making California the first state to require public, standardized safety disclosures from developers of advanced artificial intelligence (AI) models.

In the absence of imminent comprehensive federal legislation addressing AI safety, California is among a growing list of states seeking to lead on AI safety issues. As we described in a prior post, Colorado was the first state to pass a broad AI law imposing substantive disclosure, risk management, and transparency practices on developers and deployers of high-risk AI systems through the Colorado AI Act—though the law's implementation has been delayed until June 2026. Relatedly, Texas passed the Texas Responsible AI Governance Act in June 2025 to place categorical limitations on the deployment and development of AI systems, though the bill is much narrower than Colorado's law and

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