Key Takeaways The California legislature sent a range of AI bills to Governor Newsom’s desk in the legislative session that just concluded. The governor signed several into law and vetoed three. The signed bills include SB 53 (frontier AI transparency and safety), SB 243 (companion chatbots), AB 316 (AI defenses in litigation), AB 325 (antitrust limits on common pricing algorithms), AB 489 (limits on AI healthcare advice), AB 621 (deepfake pornography), and AB 853 (disclosures for generative AI).