Vapi

Vapi is a developer platform for building and deploying voice AI agents, starting with 60 free minutes per month. It offers sub-500ms latency, tool calling, multi-language support, and API integration. Users configure voices, conversation flows, telephony, and monitoring. It supports outbound/inbound calling with orchestration and guardrails. Compliance includes SOC 2, HIPAA, and PCI. Pricing is usage-based: $0.05/min for calls, $0.005/msg for SMS/chat, plus model costs at cost unless you bring your own API key. Add-ons: HIPAA ($2,000/mo) and Zero Data Retention ($1,000/mo). Best for developers and enterprises needing scalable voice automation for customer support, lead qualification, and appointment scheduling.