Vapi is a developer platform for building, testing and deploying voice AI agents that talk to customers on the phone. Teams configure the voice, conversation flow, telephony and integrations, and Vapi runs the infrastructure so an agent can go from prompt to production quickly. It reports average latency under 500ms and enterprise uptime of 99.9%. Pricing is usage-based, with a $5 credit to start, then a Core success package at $29 per month and a Pro package at $999 per month, plus per-minute provider costs for transcription, models and voices.
Developers and engineering teams at startups and large companies are the main users, especially those who prefer an API-first approach. Enterprise buyers can look at its SOC 2, HIPAA and PCI compliance, SSO, role-based access controls and contractual support SLAs. Product and operations leaders in customer support, healthcare, staffing and marketplaces use it to automate calls at volume, and its case studies include Ring, which runs all inbound support volume through Vapi, and Kavak, a Latin American automotive marketplace.
Typical use cases are customer support agents that resolve issues, lead qualification calls, and appointment scheduling. Teams can test agents with simulated calls before launch, then track what works across every call and refine the experience over time. Telephony can run through Vapi, SIP, WebSockets, WebRTC, Twilio, Vonage or Telnyx, and healthcare teams can add a HIPAA-eligible data handling option. Healthcare customers mention over one million calls per month across many use cases, which shows it can scale beyond prototypes into high-volume production workloads.
