California SB 53
Where the US actually regulates frontier labs. Its 'transparency without liability' design has become the reference model (New York's RAISE Act followed), and it makes published safety frameworks legally significant documents rather than PR.
What it is
The first US law regulating frontier AI developers specifically: large developers must publish frontier AI frameworks, report catastrophic-risk safety incidents to the state, and receive whistleblower protections — a transparency-focused successor to the vetoed SB 1047.
Who is affected
Where the US actually regulates frontier labs. Its 'transparency without liability' design has become the reference model (New York's RAISE Act followed), and it makes published safety frameworks legally significant documents rather than PR.
Key obligations
- Large frontier developers (>$500M revenue): publish and follow a frontier AI framework
- Report critical safety incidents to California OES
- Whistleblower protections for AI safety employees; civil penalties up to $1M per violation
Recent signals
Colorado AI Act takes effect after delayed start
The first comprehensive US state AI law is now operative — as DOJ's AI Litigation Task Force weighs challenges under the December 2025 preemption executive order.
New York RAISE Act frontier-safety duties begin
New York joins California in requiring large frontier developers to publish safety protocols and report incidents.
US state AI law wave: Texas, California and Illinois statutes take effect
TRAIGA, SB 53 (frontier transparency), AB 2013 (training-data disclosure) and Illinois HB 3773 all become operative on the same day — the broadest single expansion of binding US AI law.
California enacts SB 53, the first US frontier-AI transparency law
Large frontier developers must publish safety frameworks and report catastrophic-risk incidents — the transparency-first successor to vetoed SB 1047.
Related instruments
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- US-STTexas TRAIGATexas's AI law (effective 1 Jan 2026) takes an intent-based approach: it prohibits developing or deploying AI to unlawfully discri…
- US-STCalifornia AB 2013Requires developers of generative AI systems made available in California to publish documentation of training datasets — sources,…
- US-STCalifornia SB 942Requires large GenAI providers (over 1M monthly users) to offer free AI-detection tools and embed latent provenance disclosures in…
- US-STIllinois HB 3773Amends the Illinois Human Rights Act to prohibit employers from using AI that discriminates in recruitment, hiring, promotion or d…