Twilio Voice (ConversationRelay) vs Telnyx Voice AI
Pricing last verified from each vendor's own site.
Verdict
Twilio's ConversationRelay adds $0.07/min on top of call minutes (US local outbound $0.0140/min, inbound $0.0085/min), with your own LLM, and numbers from $1.15/mo; trial credit is $15. Telnyx's voice engine is $0.05/min plus LLM tokens and carrier-cost telephony from $0.0032/min.
- Consider Twilio Voice (ConversationRelay) if: You already build on Twilio and want its ecosystem and docs.
- Consider Telnyx Voice AI if: You want lower orchestration and telephony rates on Telnyx's own network.
Factual summary
- Both are listed under Voice AI & Dialers.
- Directly comparable starting prices are not available for both: Twilio Voice (ConversationRelay) — Pay as you go (US, as of Aug 2026): ConversationRelay voice AI orchestration $0.07/min on top of call minutes (local outbound $0.0140/min, inbound $0.0085/min; browser/app $0.0040/min); local numbers $1.15/mo, toll-free $2.15/mo; volume and committed-use discounts; free trial with $15 credit, no card; Telnyx Voice AI — Voice engine $0.05/min (orchestration, speech-to-text and text-to-speech); LLM tokens billed separately (about $0.006/min on Telnyx-hosted models per its estimate) and telephony at carrier cost from $0.0032/min; Telnyx estimates a production agent at about $0.06/min; volume rates via sales; free sign-up.
This is a factual comparison drawn from vendor sites, not a recommendation. Which fits depends on your channels, volume and budget.
| Twilio Voice (ConversationRelay) | Telnyx Voice AI | |
|---|---|---|
| Summary | Cloud communications API; ConversationRelay connects your own LLM to live calls with speech handled by Twilio. | Carrier-owned voice AI agent platform with telephony, speech and LLM inference on one invoice. |
| Starting price | See vendor | See vendor |
| Pricing details | Pay as you go (US, as of Aug 2026): ConversationRelay voice AI orchestration $0.07/min on top of call minutes (local outbound $0.0140/min, inbound $0.0085/min; browser/app $0.0040/min); local numbers $1.15/mo, toll-free $2.15/mo; volume and committed-use discounts; free trial with $15 credit, no card | Voice engine $0.05/min (orchestration, speech-to-text and text-to-speech); LLM tokens billed separately (about $0.006/min on Telnyx-hosted models per its estimate) and telephony at carrier cost from $0.0032/min; Telnyx estimates a production agent at about $0.06/min; volume rates via sales; free sign-up |
| Model | usage | usage |
| Free trial | Yes | — |
| Free plan | — | — |
| Channels | phone, sms | phone, sms |
| Last verified | 2026-11-02 | 2026-11-01 |
FAQ
What is the difference between Twilio Voice (ConversationRelay) and Telnyx Voice AI?
Twilio's ConversationRelay adds $0.07/min on top of call minutes (US local outbound $0.0140/min, inbound $0.0085/min), with your own LLM, and numbers from $1.15/mo; trial credit is $15. Telnyx's voice engine is $0.05/min plus LLM tokens and carrier-cost telephony from $0.0032/min.
Which is cheaper, Twilio Voice (ConversationRelay) or Telnyx Voice AI?
We can't compare entry prices directly. Twilio Voice (ConversationRelay): Pay as you go (US, as of Aug 2026): ConversationRelay voice AI orchestration $0.07/min on top of call minutes (local outbound $0.0140/min, inbound $0.0085/min; browser/app $0.0040/min); local numbers $1.15/mo, toll-free $2.15/mo; volume and committed-use discounts; free trial with $15 credit, no card. Telnyx Voice AI: Voice engine $0.05/min (orchestration, speech-to-text and text-to-speech); LLM tokens billed separately (about $0.006/min on Telnyx-hosted models per its estimate) and telephony at carrier cost from $0.0032/min; Telnyx estimates a production agent at about $0.06/min; volume rates via sales; free sign-up.
When should I choose Twilio Voice (ConversationRelay) over Telnyx Voice AI?
Consider Twilio Voice (ConversationRelay) if: You already build on Twilio and want its ecosystem and docs. Consider Telnyx Voice AI if: You want lower orchestration and telephony rates on Telnyx's own network.
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