California Governor Gavin Newsom signed two AI safety bills establishing a framework for third-party assessments of AI systems. One bill from Assemblymember Rebecca Bauer-Kahan creates a registration system and ethical guidelines for external AI auditors, while another from Jerry McNerney directs the state government to set standards and review the qualifications and evaluation capabilities of Independent Verification Organizations. Anthropic publicly supported the legislation, and OpenAI backed the bills before signing, saying it will continue promoting AI safety legislation across states. Newsom also urged the federal government to introduce nationwide AI regulatory rules as soon as possible. Separately, market pricing in the existing record put the probability of Anthropic reaching a $2.0 trillion valuation by December 31 at 86%.