PolyAI
PolyAI's Agent Studio platform lets enterprises deploy human-sounding voice agents that handle bookings, payments, order tracking and support across phone, chat and SMS. It was spun out of Cambridge University in 2017 and serves 100+ enterprises, including Marriott, Caesars, PG&E and UniCredit, with 2,000+ live deployments in 45 languages. Pricing is mainly usage-based, charged per minute. It raised an $86M Series D in December 2025, reported at a $750M valuation, bringing total funding to over $200M.
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