Ultravox vs Vapi
Pricing last verified from each vendor's own site.
Verdict
Ultravox charges a flat $0.05/min after 30 free minutes, with a $100/mo Pro plan to remove hard concurrency caps. Vapi bills per minute with transcriber, model and voice costs listed separately, plus $5 free credits and optional support packages from $29/mo.
- Consider Ultravox if: You want one flat per-minute rate on a speech-native model.
- Consider Vapi if: You want to assemble your own transcriber, LLM and voice stack.
Factual summary
- Both are listed under Voice AI & Dialers.
- Directly comparable starting prices are not available for both: Ultravox — Pay as you go: $0/mo with the first 30 minutes free, then $0.05/min, up to 5 concurrent calls; Pro $100/mo (no hard concurrency caps) at $0.05/min; SIP $0.0048/min; Enterprise custom; 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.
This is a factual comparison drawn from vendor sites, not a recommendation. Which fits depends on your channels, volume and budget.
| Ultravox | Vapi | |
|---|---|---|
| Summary | Speech-native voice AI model and platform for real-time voice agents, priced per minute. | Developer platform for building voice AI agents. |
| Starting price | See vendor | See vendor |
| Pricing details | Pay as you go: $0/mo with the first 30 minutes free, then $0.05/min, up to 5 concurrent calls; Pro $100/mo (no hard concurrency caps) at $0.05/min; SIP $0.0048/min; Enterprise custom | 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 | phone |
| Last verified | 2026-11-01 | 2026-10-28 |
FAQ
What is the difference between Ultravox and Vapi?
Ultravox charges a flat $0.05/min after 30 free minutes, with a $100/mo Pro plan to remove hard concurrency caps. Vapi bills per minute with transcriber, model and voice costs listed separately, plus $5 free credits and optional support packages from $29/mo.
Which is cheaper, Ultravox or Vapi?
We can't compare entry prices directly. Ultravox: Pay as you go: $0/mo with the first 30 minutes free, then $0.05/min, up to 5 concurrent calls; Pro $100/mo (no hard concurrency caps) at $0.05/min; SIP $0.0048/min; Enterprise custom. 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 Ultravox over Vapi?
Consider Ultravox if: You want one flat per-minute rate on a speech-native model. Consider Vapi if: You want to assemble your own transcriber, LLM and voice stack.
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