Retell AI
Choose Retell using a complete component configuration because the headline minute range is not a cap on every model choice.
- Starting price
- Infra USD 0.055/min; other components extra
- Free access
- USD 10 credits and twenty included concurrent calls
- Billing unit
- Voice minutes, component add-ons and monthly resources
- Platform
- Hosted voice/chat agents, webhooks and APIs
- Verified
- 1 Nov 2026
Overview
What you provide
- Provide approved agent instructions, business tools, a selected model/voice stack and a telephony route.
What you get
- Retell produces live conversations, transcripts, tool actions and call-analysis records.
Choosing this tool
Retell separates voice infrastructure, speech output, language models, transport and optional processing. Silence is billed while the agent remains active; after transfer, AI-agent charges stop but telephony can continue. Compare Vapi when you need a different modular provider stack, or echowin when estimating consolidated voice and chat bundles. Test the transition from agent to human because it changes both the experience and billable components.
A decision worked through
At USD 0.055 infrastructure + USD 0.015 platform voice + USD 0.008 GPT-5-mini + USD 0.015 selected US transport, 1,000 minutes total USD 93 before add-ons, monthly resources and taxes. This is a specified configuration, not a platform-wide price promise.
Retell AI alternatives for voice agents with detailed component billing
Compare Retell AI with Vapi, echowin for this workflow, including the billing unit and the work left to your team.
| Product | Price / unit | Free allowance | Input → output | Key limit |
|---|---|---|---|---|
| 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. |
| 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. |
Setup & workflow
- Configure a narrow assistant and choose its model, voice and transport.
- Simulate a connected call including silence and human transfer.
- Reconcile component usage and required concurrency before launch.
Requirements & installation
- Define a permitted call workflow and compare a written component estimate with observed test-call usage.
Limits & review
- Telephony, model choices and add-ons can change the all-in rate; connected voicemail and silence can still consume billable time.
Your part
- Review tool actions, silence billing and escalation results before enabling production calls.
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 Retell AI pricingwww.retellai.com
- Official Retell AI productretellai.com
- Retell AI official referencewww.retellai.com
- Vapi official referencevapi.ai
- echowin official referenceecho.win
