AIPolicyTracker
California (United States) High Adopted

California enacts the Transparency in Frontier Artificial Intelligence Act (SB 53)

Concerns California SB 53

What changed?

The Governor signed SB 53, requiring large frontier developers to publish safety frameworks and transparency reports and to report critical safety incidents, operative 1 January 2026.

What does it mean in practice?

Frontier-model developers doing business in California need a published safety framework and incident reporting process.

Official source

SB 53 Transparency in Frontier Artificial Intelligence ActCalifornia Legislative Information · 29 Sep 2025

Cite this record

AIPolicyTracker (2026). “California enacts the Transparency in Frontier Artificial Intelligence Act (SB 53)”. https://aipolicytracker.org/changes/2025-09-29-california-sb-53-signed (accessed 24 September 2026). Data licensed CC BY 4.0.

Cite the official text alongside it: SB 53 Transparency in Frontier Artificial Intelligence Act, California Legislative Information, https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260SB53.

Informational only, not legal advice. Verify every claim against the linked official sources and consult qualified counsel before acting.