Connecticut SB5 passed both chambers on May 1 and heads to the governor, making it one of the most comprehensive state AI laws in the US.
Summary
- Connecticut SB5 passed 131-17 in the House and 32-4 in the Senate on May 1, with Governor Lamont confirming he will sign the bill.
- The law covers AI companions, synthetic media transparency, automated employment decision tools, and frontier model developers, with staggered effective dates from October 2026.
- The law takes effect despite the Trump administration’s executive order urging states to avoid burdensome AI regulation, making Connecticut the latest state to defy federal pressure.
Connecticut SB5 passed on May 1, becoming one of the broadest state AI laws in the US. The House voted 131-17 in favor and the Senate passed it 32-4, with bipartisan support in both chambers. Governor Ned Lamont confirmed he will sign the bill, which is now formally titled the Connecticut Artificial Intelligence Responsibility and Transparency Act.
The law covers AI companions, automated employment decision tools, synthetic media provenance, and frontier model developers above defined thresholds.
First effective date is October 1, 2026. Most provisions become enforceable exclusively by the state Attorney General as unfair or deceptive trade practices, with no private right of action.
What the law requires
For employers, SB5 requires disclosure when automated tools are used in recruiting or hiring decisions and bars companies from using such tools as a defense against discrimination claims. Employment provisions take effect October 1, 2026.
AI companion rules, covering chatbots that foster emotional attachment, take effect January 2027. Generative AI systems above one million users must adopt C2PA-aligned provenance data standards.
Frontier developers must establish internal AI safety programs and protect employees who report safety concerns. As crypto.news reported, companion AI regulation has accelerated across US states in 2026 following lawsuits in Pennsylvania and Kentucky over chatbot harm.
Federal collision course
Connecticut joins California, Colorado, and others in passing AI-specific laws despite Trump’s executive order, which the White House says is intended to preempt state rules deemed burdensome.
SB5 includes a regulatory sandbox and working group, with the first meeting required by August 31, 2026, to shape implementation. As crypto.news tracked, federal agencies are simultaneously deploying AI tools to fill regulatory gaps, creating a layered enforcement environment for companies operating across state lines.
Attorney General William Tong said his February 2026 advisory to businesses signaled his office already views AI squarely within its remit. SB5 gives his office significantly expanded, purpose-built tools to act on that posture.
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