United States of America: Governor signed Act on frontier artificial intelligence models and whistleblower protections including transparency requirements (SB 53)
Description
Governor signed Act on frontier artificial intelligence models and whistleblower protections including transparency requirements (SB 53)
On 29 September 2025, the Governor of California signed the Transparency in Frontier Artificial Intelligence Act (SB 53). The Law applies to frontier developers and large frontier developers of foundation models, including those with annual revenue …
Scope
Policy Area
Design and testing standards
Policy Instrument
Testing requirement
Regulated Economic Activity
ML and AI development
Implementation Level
subnational
Government Branch
executive
Government Body
central government
Complete timeline of this policy change
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2025-01-07
under deliberation
2025-09-13
adopted
2025-09-29
adopted