Build Low-Latency Voice AI Agents with Full Model Control
Vapi is an API-first platform for building, testing, and deploying voice AI agents at enterprise scale. It handles the hard real-time infrastructure — speech-to-text, LLM orchestration, text-to-speech, and telephony — so developers can ship production phone agents in minutes instead of months.
Used by Amazon Ring, Intuit, ServiceTitan, and New York Life, Vapi powers customer support, lead qualification, and appointment-scheduling agents with sub-600ms response times and natural turn-taking. Its provider-agnostic design lets teams pick from dozens of STT, LLM, and TTS providers — OpenAI, Anthropic, Google, Deepgram, ElevenLabs, Gladia, and more — or bring their own API keys to control cost and model choice, while built-in guardrails, monitoring, and SOC 2 / HIPAA / PCI compliance make it viable for regulated industries.
Pricing
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- Build: Usage-based — $0.05/min platform fee, model provider costs at cost ($0 if you bring your own API keys), $10 per concurrent line/month, community and email support
- Chat / SMS: $0.005 per message
- Scale (Enterprise): Fixed platform fee + committed volume, volume-based per-minute pricing, custom SLA, dedicated account team, SSO/RBAC
- Add-ons: HIPAA compliance $2,000/month, Zero Data Retention $1,000/month
There is no flat monthly subscription on the Build plan — you pay only for what you use, with model costs passed through at cost.