Vapi · 2026-05-12 · major
Vapi — $50M Series B at $500M Valuation After Amazon Ring Routes 100% of Inbound Calls Through Its Voice-AI Platform
Voice-AI developer platform Vapi raised $50M led by Peak XV at a $500M post-money valuation. Amazon Ring picked it over 40 vendors and now routes 100% of inbound calls through Vapi — "zero to production in two weeks".
Vapi just became the de-facto voice-AI infra layer for enterprise call centres after Amazon Ring switched 100% of its inbound to the platform.
Key specs
| Raise | $50M Series B |
|---|---|
| Valuation | $500M post-money |
| Total funding | $72M |
| Calls processed | 1B+ |
| Calls per day | 1M–5M |
| Developers | 1M+ |
| Unique agents | 2.7M |
| Enterprise arr growth | 10x |
What is it?
Vapi is an API-first platform for building voice AI agents that handle customer support, lead qualification, scheduling, screening, and outbound calls. Developers can pick their own STT, LLM, and TTS providers and wire them together with low-latency call control rather than building the audio plumbing from scratch.
How does it work?
Vapi sits between the telephony layer and a developer-chosen model stack — OpenAI/Anthropic/open-weight LLMs, Deepgram/Whisper STT, ElevenLabs/PlayHT TTS. It handles interruption detection, dynamic pause sensing, backchanneling, and real-time turn-taking, exposed through TypeScript and Python SDKs and a configurable agent runtime that orchestrates STT → LLM → TTS hops in under a second.
Why does it matter?
Amazon Ring's quote — "zero to production in two weeks, 100% of inbound now runs through Vapi" — is the loudest enterprise validation yet for a startup in a category being chased by Sierra, Decagon, PolyAI, Bland, Retell, and ElevenLabs. The $500M tag and 10× ARR growth signal that voice agents have moved from demoware into procurement decks at companies like ServiceTitan, New York Life, and Intuit.
Who is it for?
Engineering teams shipping production voice agents and CX leaders evaluating call-deflection vendors.
Try it
Sign up at https://vapi.ai/ — free tier covers prototyping; Python and TypeScript SDKs available.