Voice AI startup Vapi has secured $20 million in funding to expand its engineering team and infrastructure. Founded in 2023, Vapi provides a platform for deploying AI-powered voice agents, supporting applications like customer support and sales. With a scalable architecture, it can manage millions of calls, integrating with various platforms. Notable clients include Y Combinator and Luma Health. Bessemer Venture Partners led the funding, which valued the company at approximately $130 million.