Build custom voice agents that scale Built for developers API-native and compatible with any stack for total control.
Configurable by design 1000+ points of config, bring your own models, or choose from 200+.
Talk to Vapi give it a Try
Use cases
Feels human. Inbound calls powers 400,000+ daily calls.
A key technical requirement was the ability to bring our own stack — Vapi's developer-friendly API-first approach made this possible.
Quang Tran
CTO, FleetWorks
Fetch_available_jobs_from_broker
Features
Flexible for engineers. Talk to agents in English, Spanish, Mandarin, or one of 100+ other supported languages.
Everything is exposed as an API, with 1000s of configurations and integrations.
Design test suites of simulated voice agents to identify hallucination risks before going to production.
Bring your own API keys for transcription, LLM, or text-to-speech models. Or, plug in your own self-hosted models.
Plug in your APIs as tools to intelligently fetch data and perform actions on your server.
ENTERPRISE Reliable. Scalable. Secure. 99.99% Uptime Custom real-time audio infrastructure with enterprise-grade reliability.
Forward-deployed Team Deployment assistance with a dedicated forward-deployed engineer to go live in a week.
Sub-500ms Latency Scale up and down to millions of calls in minutes with ultra-low latency interactions.
AI Guardrails Built-in conversation guardrails prevent model hallucinations and ensure data integrity.
SOC2, HIPAA, & PCI Compliant Enterprise-level security for healthcare and financial services.
Ship your first Voice Agent with Vapi
A/B experiments Test different variations of prompts, voices, and flows to continuously optimize performance.
