California Transparency in Frontier AI Act (TFAIA)

SB 53, ch. 138, 2025 Cal. Stat.

In force

Effective 1 Jan 2026

Verified 9 Sep 2026

Chaptered by the CA Secretary of State September 29, 2025. Frontier-model transparency obligations.

Primary source: California SB 53 (TFAIA) →

What it does

Chaptered by the CA Secretary of State September 29, 2025. Frontier-model transparency obligations.

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Related in the register

California CPPA Automated Decision-Making Technology (ADMT) Regulations California, United States · in force, phased California AB 2013 — Generative AI Training Data Transparency Act California, United States · in force New York RAISE Act New York, United States · enacted Korea Framework Act on Artificial Intelligence South Korea · in force

Compared in

Frontier-model safety and transparency regimes →

Cite this entry

The entry’s permanent URL is its identifier. Add the date you read it — the register is updated as sources change. Register text is licensed CC BY 4.0.

AI Reg. Index. “California Transparency in Frontier AI Act (TFAIA).” Last verified 9 September 2026. https://airegindex.com/sources/california-transparency-in-frontier-ai-act-tfaia/ Retrieved [access date].

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