Anthropic opens a waitlist research preview of Claude Duet, a proactive agent app for Pro and Max subscribers in the US
Anthropic published this on Oct 21, 2026 (source: claude.com).
Anthropic introduced Claude Duet, a new app where Claude works as a proactive agent: it sends a morning brief on what matters across connected apps, messages you when something needs attention, completes tasks, keeps working when you step away and checks with you before acting. Built around Claude Opus 5.5, it runs on iOS, Android and claude.ai, and the research preview opens by waitlist for US Pro and Max subscribers.