SB 25B-004, signed by Governor Polis on August 28, 2025 at the close of a special legislative session, postponed the effective date of the Colorado AI Act from February 1, 2026 to June 30, 2026 without changing its substance. Lawmakers had been unable to agree on amendments during the special session, so the delay bought time for the 2026 regular session, which ultimately replaced the law with SB 26-189.
| Document | SB 25B-004 — Artificial Intelligence Consumer Protections — delay of effective date to June 30, 2026 |
| Issued by | Colorado Artificial Intelligence Act (SB 24-205), repealed and reenacted as the Automated Decision-Making Technology Act (SB 26-189) — enforced by the Colorado Attorney General |
| Type | Statute |
| Status | Superseded |
| Published | Aug 28, 2025 |
| Effective | Aug 28, 2025 |
| Applies to | All developers and deployers subject to SB 24-205 |
| Superseded by | SB 26-189 |
| Official source | leg.colorado.gov ↗ |
| Use cases | AI governance (general) · Credit scoring & underwriting |
What are the key points of SB 25B-004?
- Enacted in the August 2025 special session after negotiations to narrow SB 24-205 collapsed
- Single substantive change: effective date moved from February 1, 2026 to June 30, 2026
- No changes to the duty of care, impact assessments, consumer rights, or the bank/credit union safe harbor
- Signed August 28, 2025; the delay was itself overtaken when SB 26-189 repealed and reenacted the statute on May 14, 2026 with a January 1, 2027 start
What did SB 25B-004 change for banks?
For banks it moved the compliance date by five months and signalled that the legislature intended a rewrite rather than implementation as passed. The June 30, 2026 date never bit; SB 26-189 replaced the underlying law before it arrived.
What did SB 25B-004 change in the Colorado AI Act?
Only the effective date, from February 1, 2026 to June 30, 2026. It made no substantive amendments.
Was the Colorado AI Act delayed again in 2026?
Not delayed but replaced: SB 26-189, signed May 14, 2026, repealed and reenacted it as the ADMT Act with an effective date of January 1, 2027.
| Date | Document | Status |
|---|---|---|
| May 14, 2026 | SB 26-189 — Automated Decision-Making Technology Act (repeal and reenactment of the Colorado AI Act) | Final |
| Aug 11, 2026 | Colorado AG proposed ADMT rules — Proposed Automated Decision-Making Technology and Conversational AI Service Rules (Notice of Rulemaking Hearing) | Comment period open |
| May 29, 2026 | HB 26-1263 — Conversational Artificial Intelligence Service Operator Requirements (Chatbot Safety Act) | Final |
| May 17, 2024 | SB 24-205 — Consumer Protections for Artificial Intelligence (Colorado Artificial Intelligence Act) | Superseded |
| Aug 6, 2026 | Responses to FSB AI sound practices consultation (Aug 2026) — Public responses to consultation on Sound Practices for Responsible Adoption of Artificial Intelligence (AI) | Final |
| Jul 31, 2026 | ESA Statement on ICT risks from frontier AI models (JC 2026 25) — ESA Statement: Toward a consistent and risk-based approach for ICT risks from frontier AI models | In force |
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