California Legislature Passes AI Safety Verification Bill SB 813

Aug 31, 2026
California lawmakers passed SB 813, a Fathom sponsored bill that would create a state framework for independent verification organizations to assess AI safety claims if signed by Governor Gavin Newsom.
California Legislature Passes AI Safety Verification Bill SB 813

The California Legislature passed SB 813, a bill authored by Senator Jerry McNerney and sponsored by Fathom, the company said in a press release.

The bill now goes to Governor Gavin Newsom, who can sign or veto it. If signed, SB 813 would direct the Government Operations Agency to designate qualified independent verification organizations.

Those organizations would be outside experts able to test AI safety claims, measure risk, and assess AI models and systems using testing and analysis. The framework would create a state process for independent assessments rather than relying only on companies to evaluate and report their own results.

The bill follows California SB 53, which requires large frontier AI developers to publish a safety framework and report critical incidents.

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