retell-ai
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Retell AI Turned $5M Into $50M and a Voice on Every Phone Line
A five-person startup out of San Carlos hit $50 million in annual revenue on $5.1 million raised, powering more than 50 million voice calls a month while the giants it competes with spend hundreds of millions buying their way in.
Voice AI Agents Are Eating the Chatbot Business Alive
In 2026 the tidy world of customer-service chatbots split in two. On one side, legacy vendors like LivePerson and Verloop.io are being sold for parts; on the other, voice-native upstarts like Retell AI and deep-pocketed enterprise players like Kore.ai race to answer your next call in under a second.
Retell AI Built a $60M Business on 5 Cents a Minute
The YC-backed voice startup raised about $5 million, then rode 650% growth to a $60 million run rate - selling AI phone agents by the minute while Microsoft, Salesforce and Cresta chase the same calls.
Retell AI and boost.ai Are Rewiring the Customer Call
Two companies - one a Norwegian chatbot pioneer, the other a Y Combinator voice startup - are pulling conversational AI in opposite directions. Whoever wins gets to decide how you talk to every business you deal with.