Transparency in Frontier Artificial Intelligence Act (TFAIA)
Complete compliance reference
Summary
California Senate Bill 53, the Transparency in Frontier Artificial Intelligence Act, was signed by Governor Newsom on September 29, 2025 after the prior frontier-AI bill (SB 1047) was vetoed in 2024. SB 53 imposes obligations on "large frontier developers" — developers of frontier AI models meeting compute and revenue thresholds defined in the statute. Key requirements: (1) publication of a written frontier AI safety framework describing how the developer assesses and mitigates catastrophic risk; (2) transparency reports prior to deploying new frontier models; (3) reporting of critical safety incidents to the California Office of Emergency Services within specified timeframes; (4) whistleblower protections for employees who report violations of the Act or substantial dangers; (5) creation of a public-benefit AI compute cluster ("CalCompute") — separate provision. Enforcement by the California Attorney General with civil penalties up to $1,000,000 per violation for material violations.
Key obligations
- governance→ developerCal. Health & Safety Code § 22757.10
Publish a written frontier AI safety framework describing how the developer assesses and mitigates catastrophic risks from frontier AI models, with periodic updates.
Deadline: ongoing
- transparency→ developerCal. Health & Safety Code § 22757.10
Publish a transparency report prior to deploying a new frontier AI model, summarizing pre-deployment assessments and mitigations.
Deadline: before_deployment
- documentation→ developerCal. Health & Safety Code § 22757.10
Report critical safety incidents to the California Office of Emergency Services within statutory timeframes.
Deadline: within_statutory_timeframe
Sources
Last verified: April 25, 2026
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