Vapi Raises $50M Series B to Expand Human‑Like Voice AI Infrastructure

Vapi Inc. closed a $50 million Series B led by Peak XV on May 12, bringing total funding to $72 million to accelerate its voice‑AI platform that links large language models to speech systems.

Vapi Inc. announced a $50 million Series B round led by Peak XV on May 12, bringing the startup’s total financing to $72 million and fueling expansion of its voice‑AI infrastructure. The raise comes as businesses increasingly deploy voice‑driven interfaces across consumer and enterprise products; Vapi says the funding will help it scale distribution, shorten time‑to‑production and strengthen governance and security across voice interactions.

Vapi describes its product as voice‑AI middleware that connects large language models — including OpenAI’s GPT and Anthropic’s Claude — to speech‑to‑text and text‑to‑speech engines. The platform emphasizes low‑latency responses and interruptability so agents can respond mid‑utterance, a capability Vapi argues is essential for spoken interactions to feel natural rather than scripted.

The company presented usage metrics it says matter to builders: more than 1 million developers on the platform, over 2.7 million unique AI agents created, and in excess of 1 billion calls processed. Those scale indicators underpin a range of applications from appointment booking and concierge services to standard customer‑service phone flows, and support both inbound and outbound workflows. Vapi lists specific enterprise uses that its stack enables, including candidate screening, simulated sales coaching and autonomous menu navigation. The startup has found strongest traction in financial services, healthcare, insurance, automotive and workforce management, where teams seek voice agents that solve customer problems rather than merely add conversational interfaces.

CEO Jordan Dearsley framed the funding around three priorities: distribution to reach the right customers, delivery to shorten time from purchase to production, and core infrastructure investments in governance and security to provide composition and guardrails for every call. Dearsley also warned that poor customer‑experience design has hindered many voice initiatives, and said Vapi’s approach aims to produce more usable, problem‑solving agents.

Customers point to fast deployment and production readiness as differentiators. Jason Mitura, VP of software development at Amazon Ring, said that after evaluating vendors Ring moved from zero to production in two weeks and now routes 100% of its inbound volume through Vapi. Other cited applications include replacing call centers, automating high‑volume qualification workflows and navigating complex third‑party phone systems without human intervention.