Vapi provides a developer‑first platform that lets enterprises build, test, and deploy voice AI agents in minutes, handling all telephony, SIP, and real‑time call routing infrastructure. The service offers ultra‑low latency (<500 ms) processing, access to 200+ managed LLM/STT/TTS models or custom models, automated testing, multilingual support, and enterprise‑grade reliability and compliance features, all on a usage‑based pricing model.
Funding
$20M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
5OFounders
Product
Problem
Companies that want to deploy voice AI agents face high infrastructure complexity, long development cycles, and difficulty ensuring low latency and reliable telephony integration at scale. Managing model selection, testing for hallucinations, and monitoring performance adds further operational overhead.
Solution
Vapi offers a unified, developer‑first platform for building, testing, and deploying voice agents quickly and at enterprise scale. Users configure conversation flows, select from over 200 pre‑integrated LLM, STT, and TTS models—or connect their own—while the platform handles telephony, SIP, and real‑time call routing. The service provides ultra‑low latency responses (<500 ms), built‑in observability, automated testing, and multilingual support, enabling continuous improvement of agent performance. Enterprise‑grade uptime, recovery from model or network failures, and compliance add‑ons (HIPAA, zero‑data‑retention) ensure production reliability. Pricing is usage‑based for a “Build” tier and custom‑quoted for larger “Scale” deployments.
Target Audience
Primary customers are enterprise product teams, contact‑center operators, and developer groups that need scalable, low‑latency voice AI agents for customer support, sales, or internal workflows.
Features
- Ultra‑low latency voice processing with responses under 500 ms for real‑time conversations
- Integrated telephony stack: SIP support, warm transfers, voicemail detection, DTMF handling, and phone‑number management
- Flexible model access: choose from 200+ managed LLM/STT/TTS providers or bring your own model via API
- Tool‑calling framework to fetch external data and trigger actions during calls
- Automated testing suite to detect hallucination risk before production
- Multilingual support for 100+ languages and custom pronunciation dictionaries
- Full API access for developers plus a visual UI for non‑technical users
- Enterprise reliability features: built‑in failure recovery, 99.99 % uptime SLA, and security add‑ons (SOC 2, HIPAA, zero‑data‑retention)