Decagon

Decagon is an AI concierge platform that helps enterprises build, optimize, and scale AI agents for customer support across chat, voice, and email. Used by leading companies including Hertz, Chime, Duolingo, Affirm, Notion, and Rippling, its agents handle complex tasks like order tracking, refunds, and rebooking — delivering concierge-level experiences at scale. In January 2026 Decagon raised a $250M Series D co-led by Coatue and Index Ventures at a $4.5B valuation, bringing total funding to roughly $481M.