# Vapi

> Developer platform for building, testing and deploying voice agents that answer and place phone calls

Source: https://dontaskagain.com/vapi
Website: https://vapi.ai/?utm_source=dontaskagain
Pricing: Paid
Categories: [Voice agents](https://dontaskagain.com/categories/voice-agents.md), [Agent builders](https://dontaskagain.com/categories/agent-builders.md)
Listed: 2026-10-23
Updated: 2026-10-23

Vapi is a developer platform for building, testing and deploying voice AI agents. Agents built on it handle phone and voice conversations for a business, such as answering support calls, qualifying inbound leads and scheduling appointments, while Vapi runs the infrastructure.

**Key features:**

- Configuration of voice, conversation flow, telephony and integrations.
- Full catalog of transcription, language and voice models.
- Real-time call monitoring to find what works and improve agents.
- API-native design with Vapi telephony, SIP, WebSockets and WebRTC.
- AI guardrails against hallucinations.
- Infrastructure that scales to millions of calls with sub-500ms latency.

Vapi is SOC 2, HIPAA and PCI compliant and offers SSO, OAuth and RBAC for enterprises. It starts with $5 in free credits and per-minute usage billing that passes through model and voice provider costs. The Core package is $29/month with more phone numbers and concurrent calls, Pro has a $999/month minimum with uptime SLAs, and HIPAA compliance is a $2,000 add-on.

## More voice agents

- [ElevenLabs Agents](https://dontaskagain.com/elevenlabs.md): Platform for building and deploying voice and chat agents that handle support, sales and scheduling in 90+ languages
- [Sierra](https://dontaskagain.com/sierra.md): Platform for building customer-facing agents handling service and sales conversations across chat, voice and messaging
- [Decagon](https://dontaskagain.com/decagon.md): Customer service agents for enterprises that resolve requests across chat, voice and email
- [Retell AI](https://dontaskagain.com/retell.md): Voice agent platform for automating inbound and outbound phone calls like booking, support and collections
- [Bland](https://dontaskagain.com/bland.md): Enterprise voice agents that handle regulated phone calls like patient triage, claims and payment changes
- [Synthflow](https://dontaskagain.com/synthflow.md): Enterprise voice agent platform that automates high-volume phone calls on its own telephony network
- [PolyAI](https://dontaskagain.com/polyai.md): Enterprise dialog agents that resolve customer calls and chats end to end, built in Dialog Studio or via API
- [Hippocratic AI](https://dontaskagain.com/hippocratic-ai.md): Library of clinical voice agents that call patients for intake, outreach, care management and follow-up