https://leginfo.legislature.ca.gov/faces/billTextClient.xhtml?bill_id=202520260SB53 

(1) Existing law generally regulates artificial intelligence, including by requiring, on or before January 1, 2026, and before each time thereafter, that a generative artificial intelligence system or service, or a substantial modification to a generative artificial intelligence system or service, released on or after January 1, 2022, is made publicly available to Californians for use, the developer of the system or service to post on the developer’s internet website documentation regarding the data used by the developer to train the generative artificial intelligence system or service, as prescribed.
This bill would enact the Transparency in Frontier Artificial Intelligence Act (TFAIA) that would, among other things related to ensuring the safety of a foundation model, as defined, developed by a frontier developer, require a large frontier developer to write, implement, and clearly and conspicuously publish on its internet website a frontier AI framework that applies to the large frontier developer’s frontier models and describes how the large frontier developer approaches, among other things, incorporating national standards, international standards, and industry-consensus best practices into its frontier AI framework. The TFAIA would also require a large frontier developer to transmit to the Office of Emergency Services a summary of any assessment of catastrophic risk, as defined, resulting from internal use of its frontier models, as specified. The TFAIA would require the Office of Emergency Services to establish a mechanism to be used by a frontier developer or a member of the public to report, as prescribed, a critical safety incident, as defined, and would also require the Office of Emergency Services to establish a mechanism to be used by a large frontier developer to confidentially submit summaries of any assessments of the potential for catastrophic risk resulting from internal use of its frontier models, as prescribed.