Vapi (vapi)

Vapi is a voice AI agents platform for building, testing, and deploying real-time voice agents across phone, web, and SIP. The Vapi REST API exposes assistants, calls, chats, campaigns, phone numbers, tools, files, squads, sessions, structured outputs, and analytics, plus server/client webhook events.

APIs.json: Visit APIs.json URL

Type

• x-type: company

Tags

• AI, Voice, Agents, Realtime, CPaaS

APIs

1. Vapi Platform API — REST API at https://api.vapi.ai for managing assistants, calls, phone numbers, tools, chats, campaigns, and analytics. OpenAPI spec at openapi/vapi-openapi.yml.
2. Vapi Webhooks API — Server- and client-side webhook events for end-of-call reports, transcripts, function calls, and tool invocations.

Common Properties

• Website
• Documentation
• OpenAPI
• Plans — reconciled
• RateLimits — partial (concurrency documented; HTTP RPS not public)
• FinOps — reconciled

Pricing Snapshot

• Vapi platform fee: ~$0.05/min orchestration only
• Realistic all-in cost (with transcription, LLM, TTS, telephony): $0.07–$0.25/min
• Enterprise: custom contracts with volume discounts

Maintainers

FN: Kin Lane

Email: kin@apievangelist.com