Deepgram Voice Agent API vs Vapi
Pricing last verified from each vendor's own site.
Verdict
Deepgram's Voice Agent API is one per-minute rate: $0.075/min Standard pay as you go, $0.050/min if you bring your own LLM and TTS, with $200 free credit. Vapi is an orchestration layer billed per minute, with transcriber, model and voice costs listed separately and $5 free credits.
- Consider Deepgram Voice Agent API if: You want speech recognition, LLM orchestration and voice in one API with a large free credit.
- Consider Vapi if: You want Vapi's orchestration and freedom to mix providers.
Factual summary
- Both are listed under Voice AI & Dialers, AI Agent Builders.
- Directly comparable starting prices are not available for both: Deepgram Voice Agent API — Voice Agent API, pay as you go: Standard $0.075/min ($0.068 on Growth), Standard with your own TTS $0.065/min ($0.051), your own LLM $0.059/min, your own LLM and TTS $0.050/min ($0.041), Advanced $0.163/min ($0.146); $200 free credit; Growth plans from $4K/year; Enterprise via sales; 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.
| Deepgram Voice Agent API | Vapi | |
|---|---|---|
| Summary | Speech-to-text, text-to-speech and an all-in-one Voice Agent API for building AI phone agents. | Developer platform for building voice AI agents. |
| Starting price | See vendor | See vendor |
| Pricing details | Voice Agent API, pay as you go: Standard $0.075/min ($0.068 on Growth), Standard with your own TTS $0.065/min ($0.051), your own LLM $0.059/min, your own LLM and TTS $0.050/min ($0.041), Advanced $0.163/min ($0.146); $200 free credit; Growth plans from $4K/year; Enterprise via sales | 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 | 2026-10-30 | 2026-10-28 |
FAQ
What is the difference between Deepgram Voice Agent API and Vapi?
Deepgram's Voice Agent API is one per-minute rate: $0.075/min Standard pay as you go, $0.050/min if you bring your own LLM and TTS, with $200 free credit. Vapi is an orchestration layer billed per minute, with transcriber, model and voice costs listed separately and $5 free credits.
Which is cheaper, Deepgram Voice Agent API or Vapi?
We can't compare entry prices directly. Deepgram Voice Agent API: Voice Agent API, pay as you go: Standard $0.075/min ($0.068 on Growth), Standard with your own TTS $0.065/min ($0.051), your own LLM $0.059/min, your own LLM and TTS $0.050/min ($0.041), Advanced $0.163/min ($0.146); $200 free credit; Growth plans from $4K/year; Enterprise via sales. 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 Deepgram Voice Agent API over Vapi?
Consider Deepgram Voice Agent API if: You want speech recognition, LLM orchestration and voice in one API with a large free credit. Consider Vapi if: You want Vapi's orchestration and freedom to mix providers.
More options
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