The California State Legislature passed Senate Bill 53 on September 13, 2025, establishing some of the strictest AI safety and transparency requirements in the United States. The law targets developers of "frontier models"—the largest and most powerful systems created by companies like OpenAI, Google, and Anthropic. Key provisions of the bill require companies to publish detailed safety testing protocols, report "critical incidents" to state authorities within 15 days, and provide robust protections for employee whistleblowers who report risks. The document has now been sent to Governor Gavin Newsom for his signature. If signed, California, home to most of the leading AI labs, will set a major legal precedent and potentially establish a regulatory standard for the entire country.
California Lawmakers Pass SB 53 AI Safety Bill
