# SENATE BILL 25B-004 (Colorado) — SECTION 1 — effective June 30, 2026

For SENATE BILL 25B-004 (Colorado), provision stating the date is SECTION 1; effective date is June 30, 2026; what it applies to is developers and deployers of high-risk artificial intelligence systems, and deployers or other developers of artificial intelligence systems intended to interact with consumers, under part 17 of article 1 of title 6, recorded from its source on 2026-10-07; source re-checked 2026-10-15.

- **Jurisdiction:** Colorado _(our reading, not quoted from the source)_
- **Instrument:** SENATE BILL 25B-004 _(verified: appears in its own passage below)_
- **Provision stating the date:** SECTION 1 _(our reading, not quoted from the source)_
- **Effective date:** June 30, 2026 _(verified: appears in the quote below)_
- **What it applies to:** developers and deployers of high-risk artificial intelligence systems, and deployers or other developers of artificial intelligence systems intended to interact with consumers, under part 17 of article 1 of title 6 _(our reading, not quoted from the source)_
- **Amends / moved from:** Amends Colorado Revised Statutes 6-1-1702, 6-1-1703 and 6-1-1704, added by Senate Bill 24-205; the February 1, 2026 date is struck and June 30, 2026 put in its place. In the quote the struck words are printed with dashes through them, which the extracted text cannot show; the act's own footer says so. _(our reading, not quoted from the source)_

## What the source says

> 6-1-1702. Developer duty to avoid algorithmic discrimination - required documentation. (1) On and after February 1, 2026 JUNE 30, 2026, a developer of a high-risk artificial intelligence system shall use reasonable care to protect consumers from any known or reasonably foreseeable risks of algorithmic discrimination arising from the intended and contracted uses of the high-risk artificial intelligence system.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Instrument

> SENATE BILL 25B-004

### Amends / moved from

> Capital letters or bold & italic numbers indicate new material added to existing law; dashes through words or numbers indicate deletions from existing law and such material is not part of the act.

## Other dated provisions of this instrument

- [SENATE BILL 25B-004 (Colorado) — SECTION 4 — effective at 12:01 a.m. on the day following the expiration of the…](https://referencesource.org/ai-regulation-effective-dates/section-4-colorado-senate-bill-25b-004/)

## Source

- https://leg.colorado.gov/laws/session-laws/SB25B-004/3/download

Last verified: 2026-10-15. Review by: 2026-11-29.
Part of [AI law and regulation effective dates by jurisdiction](https://referencesource.org/ai-regulation-effective-dates/).