Telnyx Voice AI vs Vapi
Pricing last verified from each vendor's own site.
Verdict
Telnyx owns the telephony network: voice engine $0.05/min, LLM tokens billed separately and calls at carrier cost from $0.0032/min; Telnyx estimates about $0.06/min all-in. Vapi bills per minute with transcriber, model and voice costs listed separately, and you bring a telephony provider.
- Consider Telnyx Voice AI if: You want telephony, speech and LLM on one invoice from a carrier.
- Consider Vapi if: You want Vapi's developer tooling and to keep your existing telephony.
Factual summary
- Both are listed under Voice AI & Dialers.
- Directly comparable starting prices are not available for both: 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; Vapi — Usage-based per minute, with transcriber, model and voice costs listed separately; $5 free credits; optional support packages: Core $29/mo, Pro $999/mo minimum.
- Telnyx Voice AI lists channels Vapi does not: sms.
This is a factual comparison drawn from vendor sites, not a recommendation. Which fits depends on your channels, volume and budget.
| Telnyx Voice AI | Vapi | |
|---|---|---|
| Summary | Carrier-owned voice AI agent platform with telephony, speech and LLM inference on one invoice. | Developer platform for building voice AI agents. |
| Starting price | See vendor | See vendor |
| Pricing details | 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 | Usage-based per minute, with transcriber, model and voice costs listed separately; $5 free credits; optional support packages: Core $29/mo, Pro $999/mo minimum |
| Model | usage | usage |
| Free trial | — | — |
| Free plan | — | — |
| Channels | phone, sms | phone |
| Last verified | 2026-11-01 | 2026-10-28 |
FAQ
What is the difference between Telnyx Voice AI and Vapi?
Telnyx owns the telephony network: voice engine $0.05/min, LLM tokens billed separately and calls at carrier cost from $0.0032/min; Telnyx estimates about $0.06/min all-in. Vapi bills per minute with transcriber, model and voice costs listed separately, and you bring a telephony provider.
Which is cheaper, Telnyx Voice AI or Vapi?
We can't compare entry prices directly. 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. Vapi: Usage-based per minute, with transcriber, model and voice costs listed separately; $5 free credits; optional support packages: Core $29/mo, Pro $999/mo minimum.
When should I choose Telnyx Voice AI over Vapi?
Consider Telnyx Voice AI if: You want telephony, speech and LLM on one invoice from a carrier. Consider Vapi if: You want Vapi's developer tooling and to keep your existing telephony.
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