AI Regulation Tracker / Public consultation

Colorado AG Files ADMT and Chatbot Rules; Formal Comment Period Runs to October 26, 2026

Correction and update, August 21, 2026

This article originally reported that comments on Colorado's ADMT and chatbot rulemaking closed July 13, 2026. That was accurate as of publication. On August 11, 2026 the Colorado Department of Law filed formal proposed rules with the Secretary of State and opened a new formal comment period, running through October 26, 2026, or the last day of the hearing if it continues past that date. This article has been updated to reflect the current rulemaking timeline. Our dedicated coverage of that filing and the comment period is here: Colorado files proposed ADMT and conversational AI service rules, comments open to October 26, 2026.

Regulatory summary: Colorado's Department of Law filed proposed rules on automated decision-making technology and conversational AI services with the Secretary of State on August 11, 2026, alongside the notice of rulemaking hearing and the statement of basis, authority and purpose. Formal written comments run from August 11 to October 26, 2026, or to the last day of the hearing if it continues past that date. The rules implement the ADMT Act as repealed and reenacted by SB 26-189 and the Chatbot Safety Act (HB 26-1263), both effective January 1, 2027.

The pre-rulemaking phase is over. Proposed rules are now filed and the formal comment window is open, with earlier interim dates that decide whether your comment shapes the revised draft.

Primary source

By Anthony Guerriero, Founder, The Leveraged Years · Published July 9, 2026 · Last updated August 21, 2026

Colorado AG Files ADMT and Chatbot Rules; Formal Comment Period Runs to October 26, 2026 regulation briefing

The Leveraged Years AI Regulation Tracker

Key takeaways

The Colorado Department of Law published a Pre-Rulemaking Considerations document and opened a public comment form to gather input before drafting mandatory rules under the ADMT Act and the Chatbot Safety Act.
HR and employers, insurers, lenders, financial advisers, housing and real estate operators, healthcare providers, educators, and any business deploying chatbots or automated decision tools that touch Colorado residents
Status: proposed rules filed August 11, 2026; formal comments open to October 26, 2026.
Read the Pre-Rulemaking Considerations and the filed proposed rules at coag.gov/ai and submit comments through the official form. To shape the revised draft, comment by September 4, 2026; the revised draft is to be circulated no later than September 23, 2026

Regulatory Briefing

The short version

Bottom line. Colorado's Department of Law filed proposed rules on automated decision-making technology and conversational AI services with the Secretary of State on August 11, 2026, alongside the notice of rulemaking hearing and the statement of basis, authority and purpose. Formal written comments run from August 11 to October 26, 2026, or to the last day of the hearing if it continues past that date.

Current status. Proposed rules filed with the Secretary of State August 11, 2026; formal comment window open to October 26, 2026; rules not adopted.

Effective date. Mandatory rules must be adopted before January 1, 2027. Proposed rules were filed August 11, 2026 and formal comments run to October 26, 2026.

Bindingness: Formal notice-and-comment rulemaking under enacted statutes, ahead of formal notice-and-comment rulemaking
Scope: Deployers and developers of high-risk automated decision-making technology that makes consequential decisions, plus operators of conversational AI services offered to Colorado residents
What Changed: The Colorado Department of Law published a Pre-Rulemaking Considerations document and opened a public comment form to gather input before drafting mandatory rules under the ADMT Act and the Chatbot Safety Act.
Who This Affects: HR and employers, insurers, lenders, financial advisers, housing and real estate operators, healthcare providers, educators, and any business deploying chatbots or automated decision tools that touch Colorado residents
Current Status: Proposed rules filed with the Secretary of State August 11, 2026; formal comment window open to October 26, 2026; rules not adopted
Effective Date: Mandatory rules must be adopted before January 1, 2027; the formal comment window runs August 11 to October 26, 2026, or to the last day of the hearing if it continues past that date
Primary Source: https://coag.gov/ai/
Secondary Analysis: Mayer Brown, "Colorado Enacts New ADMT Law Replacing Colorado AI Act" (2026); Colorado General Assembly bill record for SB 26-189
Workflow Impact: Professionals must inventory where they use automated decisions or chatbots on Colorado residents, assess the considerations paper's open questions, and decide whether to file comments that shape definitions and duties before the rules are drafted
Operational Next Step: Read the Pre-Rulemaking Considerations document at coag.gov/ai and submit comments through the official form. Comment by September 4, 2026 to be considered in the revised draft, and by October 5, 2026 to be considered for revisions presented at the hearing
Last Verified: August 21, 2026

Date	Jurisdiction	Rule	Affected professionals	Status or effective date
2026-07-09	United States	The Colorado Department of Law published a Pre-Rulemaking Considerations document and opened a public comment form to gather input before drafting mandatory rules under the ADMT Act and the Chatbot Safety Act.	HR and employers, insurers, lenders, financial advisers, housing and real estate operators, healthcare providers, educators, and any business deploying chatbots or automated decision tools that touch Colorado residents	Proposed rules filed with the Secretary of State August 11, 2026; formal comment window open to October 26, 2026; rules not adopted

Frequently Asked Questions

What is the deadline to submit pre-rulemaking comments?

The pre-rulemaking form closed July 13, 2026. Formal rulemaking comments are now open and run from August 11 to October 26, 2026, or to the last day of the hearing if it continues past that date. Comment by September 4, 2026 to be considered in the revised draft that is to be circulated no later than September 23, 2026, and by October 5, 2026 to be considered for revisions presented at the hearing. The AG's page lists slightly different end-of-day cutoff times for the standard and continued-hearing scenarios, so confirm the exact time at comments.coag.gov before submitting on the deadline date.

Are the mandatory rules already written?

No. This is a pre-rulemaking input phase. The Attorney General published a considerations paper with open questions, but no binding rule text exists yet.

When do the ADMT Act and Chatbot Safety Act take effect?

The mandatory rules must be adopted before January 1, 2027, which is when the laws take effect.

What is the relationship between SB 24-205 and SB 26-189?

SB 24-205 was the 2024 Colorado AI Act. SB 26-189, enacted in 2026, repeals and reenacts the automated decision provisions as the ADMT Act with revised requirements.

Does the Chatbot Safety Act apply to my business chatbot?

If your conversational AI service reaches Colorado residents, it is likely within scope. The specific operator duties depend on the rules the Attorney General will write after this input phase.