Decagon is an AI-native customer-support platform building conversational AI agents that autonomously handle customer service interactions across chat, voice, email, and SMS. The company was founded in August 2023 by Jesse Zhang and Ashwin Sreenivas, with Zhang previously having founded the social gaming app Lowkey, acquired by Niantic in 2021.
Decagon closed a $250 million Series D in January 2026, led by Coatue Management and Index Ventures, at a $4.5 billion valuation, bringing total funding to roughly $481 million. The company markets its offering broadly as an "AI concierge" platform rather than under a single narrower product name.