Twilio vs Vapi
Twilio is listed under Telephony, Vapi under Voice agent platforms. Shared focus: api. Each name links to the product's own site.
| Category | Telephony | Voice agent platforms |
|---|---|---|
| Pricing | Paid | Paid |
| Public code | No | No |
| Tags | telephony, sip, sms, api | voice-agents, api, phone-calls, orchestration |
| Website | twilio.com | vapi.ai |
What Twilio does
Twilio is a cloud communications platform with APIs for voice calls, SMS and SIP. Many voice agent stacks use it for phone numbers and call routing, including its ConversationRelay product.
What Vapi does
Vapi is a developer platform for building voice agents that handle phone calls. You choose the speech-to-text, language model and text-to-speech providers, and Vapi manages the call flow and telephony.