Twilio Voice AI / Twilio + AI vs Retell AI

How the two platforms compare on pricing, live demos, calls, integrations, and setup — highlighted where they differ.

Developer API

Twilio Voice AI / Twilio + AI

Telephony and communications platform that developers can combine with AI models to build custom voice agents.

Voice Agent Platform

Voice AI platform for building low-latency phone agents across support, scheduling, and sales workflows.

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Attribute	Twilio Voice AI / Twilio + AI	Retell AI
Platform type	Developer API	Voice Agent Platform
Pricing	Usage Based pricing US local voice from $0.014/min outbound and $0.0085/min inbound	$0.07-$0.31/min $0.07-$0.31/min; custom pricing available
Test it	Free trial	Free trial
Calls	Inbound, Outbound	Inbound, Outbound
Human handoff	Yes	Yes
Setup difficulty	Technical	Medium
Use cases	Customer Support Appointment Scheduling Outbound Calling Lead Qualification	Customer Support Appointment Scheduling Lead Qualification AI Receptionists
Useful for	• Telephony infrastructure • Custom developer builds • Existing Twilio teams	• Fast voice prototypes • Support call automation • Scheduling workflows
Integrations
Twilio
Custom API
CRM
Contact center		—
Webhooks		—
Zapier	—
Calendar	—

Twilio Voice AI / Twilio + AI: Usage Based pricing
US local voice from $0.014/min outbound and $0.0085/min inbound
Retell AI: $0.07-$0.31/min
$0.07-$0.31/min; custom pricing available

Twilio Voice AI / Twilio + AI: Customer Support
Appointment Scheduling
Outbound Calling
Lead Qualification
Retell AI: Customer Support
Appointment Scheduling
Lead Qualification
AI Receptionists

Twilio Voice AI / Twilio + AI: • Telephony infrastructure
• Custom developer builds
• Existing Twilio teams
Retell AI: • Fast voice prototypes
• Support call automation
• Scheduling workflows

Enter your call volume once and see Twilio Voice AI / Twilio + AI and Retell AI priced at the same usage, ranked alongside every other platform.