Colorado SB 24-205 was repealed in May 2026 and replaced with narrower SB 26-189 — corrected timeline: ADMT statute effective January 1 2027, not June 30 2026
Colorado's original SB 24-205 — the comprehensive AI statute widely reported as taking effect June 30 2026 — was actually repealed in May 2026 and replaced with the narrower SB 26-189 governing automated decision-making technology (ADMT) that materially influences consequential decisions, effective January 1 2027. The corrected timeline reframes the H2 2026 state-AI-compliance landscape.
The substantive correction is to the H2 2026 mandatory-state-AI-compliance baseline. Reporting through Q1 and into Q2 2026 framed Colorado SB 24-205 as the first comprehensive US state AI law going into mandatory effect on June 30 2026. The May 2026 repeal-and-replace into SB 26-189 changes both the scope (narrower ADMT focus rather than comprehensive high-risk classification) and the timeline (January 1 2027 effective date rather than June 30 2026). Multi-jurisdictional vendors that built compliance architecture for the original June 30 deadline now have a longer runway to a narrower obligation.
The template-effect for other states is less aggressive than the original SB 24-205 would have established. State legislatures in Washington, Oregon, New York, and Illinois that were watching Colorado as a feasibility test for EU-AI-Act-style comprehensive frameworks now see a narrower template — ADMT-specific obligations rather than full high-risk classification cascade. The Cooley April analysis and the Gunderson Dettmer practical-guidance update both flag the repeal-and-replace pattern as the most likely state-level path through H2 2026. The earlier reporting widely cited in news cycles through June 20 reflected the pre-repeal status that no longer applies.
Cooley — State AI Laws – Where Are They Now? → · Gunderson Dettmer — 2026 AI Laws Update: Key Regulations and Practical Guidance → · VerifyWise — US AI regulations 2026: the state laws you must comply with →