Vapi
Production-ready voice agents API — the Twilio for AI calls.
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Trending
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Popularity
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Overview
Build voice agents that make and take calls. Handles ASR, TTS, LLM orchestration, telephony. The infra layer under most voice-AI startups.
Why it matters
Voice AI is the fastest-growing AI category in 2026. Vapi removes 90% of the engineering. Indian-language tuning is the wedge for India founders.
Use cases
- → AI receptionists
- → Outbound sales calls
- → Appointment booking bots
Pros
- + Fast time-to-prod
- + Telephony built in
- + Model-agnostic
Cons
- − Per-minute pricing adds up
- − Latency tuning required
- − Some languages still weak
Pricing
USAGE · $0.05 / min approx