On July 6, 2026, Illinois Governor JB Pritzker signed into law SB 315, a frontier model safety act that resembles the New York RAISE Act, discussed in our prior blog post here, and California’s Transparency in Frontier Artificial Intelligence Act (TFAIA), discussed in our prior blog post here. The law takes effect January 1, 2027, with transparency-reporting and audit obligations beginning January 1, 2028.  Similar to the New York and California laws, SB 315 will apply to frontier developers (i.e., persons that train, or initiate the training of, a frontier model using computing power greater than 10^26 integer or floating point operations), with certain provisions applicable only to large frontier developers (i.e., frontier developers with annual gross revenue over $500 million in the preceding year). SB 315 also includes public safety disclosure and reporting requirements. Notably, SB 315 also imposes a third-party audit requirement not found in either the New York or the California law.