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Illinois Passes SB315 Requiring Annual Third‑Party Audits for Frontier AI

The law centralizes enforcement with the state attorney general, mandates rapid incident reporting and independent verification, and could push companies to adopt Illinois rules nationwide in the absence of federal standards.

The Illinois State Capitol building in Springfield, Ill.
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Overview

  • The Illinois Legislature approved SB315 and sent it to Gov. J.B. Pritzker, with lawmakers voting in both chambers this week and the governor saying he intends to sign the bill.
  • SB315 requires the largest 'frontier' AI developers to submit to annual independent third‑party audits that verify firms are following their own safety protocols and disclosing catastrophic‑risk capabilities.
  • The measure forces developers to publish safety plans, report critical safety incidents to state agencies within 72 hours, and provides statutory whistleblower protections for employees who raise safety concerns.
  • Enforcement is centralized with the Illinois attorney general, who can seek civil penalties up to $3 million per violation while the law removes a private right of action and was amended to delay full implementation into 2028.
  • Major AI labs including OpenAI and Anthropic have backed the bill while industry trade groups have warned audits could expose sensitive systems and urged for national standards, a split that could drive companies to adopt Illinois’ rules across their operations if other states follow.