Anthropic Announces Claude Duet Proactive AI Agent Powered by Claude Opus 5.5

Anthropic announced Claude Duet, an always-on, proactive AI agent powered by Claude Opus 5.5 that runs on its own cloud-based computer and continues working even after users close the app. The assistant is rolling out via a waitlist as a research preview for US Pro and Max subscribers on iOS, Android, and the web, though it is not yet available on Team or Enterprise plans. Claude Duet integrates with email, calendars, and Stripe to check unpaid invoices, alongside Link and Shop Pay to make purchases with user approval, while using a cloud browser for websites without connectors. While included at no additional cost, Anthropic noted that all background work counts toward existing plan usage limits, which could cause subscribers to hit their caps "sooner than with chat alone." "Tell it what you need, typed or spoken, and it works in the apps you’ve connected, lets you know when something needs you, and is designed to ask before it sends a message, makes a payment, signs a document, or deletes anything." — Anthropic