California Transparency in Frontier AI Act Signed Into Law

California enacts first-in-the-nation law focused on regulating frontier artificial intelligence models. On September 29, 2025, California Governor Gavin Newsom signed SB 53 — the Transparency in Frontier Artificial Intelligence Act (TFAIA) — into law. As explained in the Senate floor analysis, the law “requires large artificial intelligence (AI) developers . . . to publish safety frameworks, disclose specified transparency reports, and report critical safety incidents to the Office of…
By: Troutman Pepper Locke