Colorado ADMT rules: hearing and last day for written comments · Oct 26, 2026 · See what changes
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Would have required developers of covered AI models (trained with more than 10²⁶ operations at a compute cost above $100M) to implement a full shutdown capability and a written safety and security protocol before training, and from 2026 to retain a third-party auditor every year. It would also have created a Board of Frontier Models. The legislature gave final passage on August 29, 2024, and Governor Newsom vetoed it on September 29, 2024 on grounds that the bill was too broad and could inhibit AI development.
SB 1047 was vetoed and did not become law. It is referenced here because it shaped the AI policy landscape significantly: California's later SB 53 took a narrower, transparency-based approach to frontier models. The principles behind SB 1047 (safety testing, kill switches, third-party audits) continue to influence policy discussions even without the law.