Vapi
Voice AI platform for building and deploying conversational voice agents via API and UI.
Vapi is a developer-focused platform for building, testing, and deploying voice AI agents. It addresses the infrastructure and integration work involved in creating conversational voice systems, offering API access and a UI, with model flexibility through bring-your-own-model support or a managed catalog of 200+ models and integrations. Telephony control includes custom SIP, warm transfers, voicemail detection, phone number management, and DTMF support.
Key capabilities include multi-agent orchestration with squads and intelligent handoffs, tool calling with MCP support, automated testing and simulations, A/B experiments, structured outputs, reporting and analytics, model fallbacks, and multilingual support across 100+ languages. The platform is API-first with client and server SDKs, and includes monitoring and observability tooling.
Vapi is packaged with usage-based pricing, where customers pay for minutes consumed, combined with optional Success Package tiers: a free starting option, Core, Pro, and Premier editions. Add-ons cover extra concurrency, organizations, and HIPAA compliance. Transport fees vary by telephony provider, with Vapi Telephony/SIP and WebSockets offered at no additional cost.
12 alternatives to Vapi
Ranked by how well each tool replaces Vapi: shared features, audience, price and popularity.
The AI agent platform for customer experience automation.
Covers 6 of 15 key features.
Free plan68 out of 100 matchUsage-based- 64 out of 100 match$20/mo
- 63 out of 100 match$1,000/mo
AI models plus chat, coding, agent-building and training tools
Covers 2 of 15 key features and starts cheaper.
Free plan63 out of 100 match$14.99/mo- 63 out of 100 matchContact sales
- 62 out of 100 matchContact sales
AI Agents for support and sales conversations
Covers 5 of 15 key features and starts cheaper.
Free plan62 out of 100 match$9/moVoice AI agents for Indian languages, including English, Hindi and Hinglish, for inbound,
Covers 5 of 15 key features and starts cheaper.
61 out of 100 match$15/mo- 61 out of 100 matchFree
- 60 out of 100 matchUsage-based
The World's First Super Assistant For Professionals And Enterprises.
Covers 3 of 15 key features and starts cheaper.
Free plan60 out of 100 match$7/mo