Developer voice-agent platform charging $0.05/min for its own orchestration, with the transcriber, LLM and voice you choose billed on top at provider cost.
Engineering teams that want to assemble their own voice stack and keep control of which transcriber, LLM and TTS model runs each agent, since the pricing page states models are passed through at provider cost with no markup. It suits builders who already have a carrier relationship or want Vapi's own SIP, WebSocket and Daily WebRTC transports, which the pricing page lists at $0 transport cost. The $5 of free credits on the no-package tier makes a prototype cheap to stand up before committing to a Success Package.
Buyers who want one predictable per-minute number should avoid it: the bill is four stacked lines plus a carrier, and Vapi's own calculator puts 1,000 minutes a month at $82-$129 all in, which is roughly $0.08-$0.13 per minute against a $0.05 headline. The free tier allows only 4 concurrent calls and 14-day retention, and extra lines cost $10 per line per month, so a small outbound campaign hits the cap fast. Regulated teams pay $2,000 a month for HIPAA mode, which the docs say applies to the whole organisation, cannot be turned on via the API, and cannot be combined with Zero Data Retention.
Pros
Cons
Vapi charges $0.05 per minute for its own hosting, then bills the transcriber, LLM and voice separately at provider cost. The pricing calculator shows Deepgram at about $0.0095 per minute, OpenAI models from $0.0077 to $0.0452, and ElevenLabs voice from $0.0146 to $0.0238. Vapi's own worked example puts 1,000 minutes a month at $82 to $129 in total, before any carrier charges.
Yes, and it is one of the few vendors that does. The homepage states under 500ms average latency and the quickstart in the documentation states sub-600ms response times with natural turn-taking. The two figures differ, so treat them as a published range rather than a guarantee. No uptime-style latency SLA is attached to either number on the pricing page.
Concurrency is tied to the Success Package. The no-package tier allows 4 concurrent calls, Core at $29 a month allows 10, and Pro allows 30. Premier concurrency is custom. Additional lines can be bought on any tier at $10 per line per month. The pricing page also caps phone numbers at 1, 5 and 10 on those same tiers respectively.
Vapi sells HIPAA compliance as a $2,000 per month add-on that requires a signed BAA. The docs state it is an organisation-level setting applying to every assistant, that it cannot be enabled through the API, and that it is mutually exclusive with Zero Data Retention. PHI may only be passed through the /call endpoint. The homepage also claims SOC 2 and PCI compliance.
Facts sourced from the vendor’s own site, last verified 2026-10-10.
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