Vapi
FreemiumBuild voice AI agents that answer and make calls
What is Vapi?
Vapi is developer infrastructure for voice agents: sub-second latency, any LLM/voice combo, call routing, tool calling mid-conversation and telephony built in. Startups run AI receptionists, appointment booking and support lines on it. Developer-oriented — non-coders should look at managed alternatives.
Key Features
- ✦Sub-second voice latency
- ✦Any LLM + any voice
- ✦Mid-call tool calling
- ✦Built-in telephony
Pros
- ✓Best-in-class latency
- ✓Full developer control
- ✓Usage-based pricing
Cons
- ✗Requires coding
- ✗Costs scale with minutes
Use Cases
- AI receptionists
- Appointment booking
- Support lines
- Outbound calls
Frequently Asked Questions
Is Vapi free in 2026?
Vapi offers a free plan; paid plans start at $0.05/min.
What is Vapi used for?
Build voice AI agents that answer and make calls. Main use cases: AI receptionists, Appointment booking, Support lines, Outbound calls.
What are the best Vapi alternatives?
The most popular alternatives to Vapi are ElevenLabs, PlayAI (Play.ht), Lindy.
Does Vapi have an API?
Yes, Vapi offers a developer API.
Best Vapi Alternatives
See full list →ElevenLabs
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