California Transparency in Frontier AI Act

California ● Effective

Official source ↗

California's frontier-model transparency law (SB 53), enacted in 2025 after the broader SB 1047 was vetoed. It focuses on disclosure and incident reporting for the largest AI developers rather than pre-deployment liability.

Obligations

Large frontier developers publish safety frameworks, report critical safety incidents to the state, and protect whistleblowers.

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