Anthropic Launches Claude Duet, a Proactive AI Agent for Pro and Max Users

Anthropic has begun rolling out Claude Duet, a proactive artificial intelligence agent that initiates contact with users to highlight tasks and complete work on their behalf, starting with paid subscribers in the United States. The research-preview product, unveiled on October 21, 2026, leverages Anthropic's Claude Opus 5.5 model to monitor connected business applications, deliver daily briefings, and execute workflows ranging from invoice tracking to web application development without requiring user intervention.