Connecticut's legislature approved Senate Bill 5 on May 1, 2026, sending one of the most far-reaching state AI laws in the country to Governor Ned Lamont's desk. The vote was lopsided: 131 to 17 in the House and 32 to 4 in the Senate. A spokesperson for the governor told CT Mirror that Lamont "looks forward to signing SB 5 into law."
Formally titled the Connecticut Artificial Intelligence Responsibility and Transparency Act, the bill runs 71 pages and pulls together rules that other states have so far passed in pieces. Its scope, per a DLA Piper analysis, covers AI companion chatbots, synthetic media disclosure, automated decision-making in hiring and benefits, anti-discrimination duties, and obligations for frontier model developers above certain compute thresholds.
What it actually changes
Compliance does not arrive all at once. The law uses staggered effective dates starting in October 2026 and stretching into 2027 and beyond, which gives covered businesses time to put governance programs and impact assessments in place. Davis Wright Tremaine notes that the staggered schedule is intentional, modelled in part on how the European Union's AI Act phased in.
For consumers, the most visible changes will be in chatbot interactions. Companion and emotional-support AI products will need clearer disclosures, age gating, and crisis-response protocols, echoing the chatbot safety bill that Iowa Governor Kim Reynolds signed earlier this month (see our earlier coverage). For employers, the new automated-decision rules will require notice, opt-out routes, and bias audits before AI systems can be used in hiring, promotion, or benefits decisions.
A new front in state-level AI law
Connecticut had been working on AI legislation for several years before the bill finally cleared. SB 5 is broader in scope than Colorado's 2024 framework and considerably more ambitious than Iowa's narrow chatbot rules, though all three are now competing reference points for legislatures in California, New York, and Texas. With Congress still deadlocked on a federal AI statute, state laws like this one are setting the de facto rules for any company that operates across state lines.
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