Vapi
Use Vapi when choosing individual voice-stack providers is worth maintaining a multi-component cost model.
- Starting price
- USD 0.05/min hosting; provider costs extra
- Free access
- USD 5 starting credits
- Billing unit
- Hosting minutes plus provider costs and optional package
- Platform
- Hosted voice orchestration with API integrations
- Verified
- 1 Nov 2026
Overview
What you provide
- Configure an agent prompt, model, transcriber, voice, transport and approved tool connections.
What you get
- Vapi orchestrates live voice conversations and exposes configured events, call data and tool results.
Choosing this tool
The USD 0.05 figure is a hosting component, not a complete AI phone minute. The displayed calculator separately adds transcription, intelligence, voice and transport. Retell offers another configurable component stack; echowin is useful to compare for a more consolidated voice/chat rate. Core changes concurrency, retention and support rather than removing usage charges.
A decision worked through
For 1,000 minutes, hosting alone is USD 50; adding Core makes those two components USD 79 before models, voices, transcription, transport and taxes. The official example totals a range because its selected providers have variable rates.
Vapi alternatives for composable voice agents with provider pass-through
Compare Vapi with echowin, Retell AI for this workflow, including the billing unit and the work left to your team.
| Product | Price / unit | Free allowance | Input → output | Key limit |
|---|---|---|---|---|
| VapiRead profileOfficial source ↗ | USD 0.05/min hosting; provider costs extra | USD 5 introductory credits | Configured voice components produce interactive calls. | Base includes four concurrent calls; extras cost separately. |
| echowinRead profileOfficial source ↗ | USD 0.20/voice minute plus USD 10/number/month | Starting credits offered; amount needs confirmation | Instructions and tools become phone or chat conversations. | Chat and SMS spend the same monthly bundle balance. |
| Retell AIRead profileOfficial source ↗ | USD 0.055/min infrastructure plus voice, model and transport | USD 10 starting credits | Instructions and integrations become voice-agent conversations. | Silence and connected voicemail can remain billable. |
Setup & workflow
- Create one assistant and connect its selected voice providers.
- Simulate a normal call and an escalation with approved tools.
- Inspect the component bill before buying additional concurrency or support.
Requirements & installation
- Choose the complete provider stack and a test transport, then estimate all cost components.
Limits & review
- Provider and transport fees are additional. Base concurrency and retention differ from paid success packages, and Pro has a material monthly minimum.
Your part
- Check transfer behaviour, data retention and tool permissions before accepting real callers.
Sources & verification5
This profile is based on official sources, not a hands-on product test.
Vendor descriptions and demos document advertised features. Editorial guidance is based on these sources.
- Official Vapi pricingvapi.ai
- Official Vapi productvapi.ai
- Vapi official referencevapi.ai
- echowin official referenceecho.win
- Retell AI official referencewww.retellai.com
