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Retell AI
Retell AI offers a voice AI agent platform with an API and agent builder. Businesses use it to automate inbound and outbound calls for support, lead qualification and appointment booking. Customers include BPOs and Fortune 500 companies in healthcare, automotive and e-commerce. Pricing appears to be usage-based. The company was in Y Combinator's W24 batch, launched publicly in February 2024, and raised a $4.6M seed round led by Alt Capital in August 2024. Sacra estimates annualized revenue of about $80M in August 2026, and ARR figures in earlier 2026 reports range from about $36M to over $50M. The company reports handling 40M+ AI calls per month.
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$60M