02
Oct
On September 29, 2025, California Governor Gavin Newsom signed into law Senate Bill 53, the Transparency in Frontier AI Act (TFAIA), the first-of-its-kind AI legislation in the U.S. that will require large AI developers to publicly disclose how they plan to mitigate potentially “catastrophic risks” posed by advanced frontier AI models. The law builds on recommendations from the June 2025 report from the Joint California AI Policy Working Group and is a pared-back successor to last year’s unsuccessful Senate...