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Case Examples

Here are a few case-examples of what billing would look like on Vapi for different voice pipeline configurations.

A customer is looking to use Vapi to assist their call center staff taking phone calls inbound:

1

Scenario

“I want to use Vapi voice assistants to support my human customer service reps in a call center. However, I have a custom LLM I would prefer to use instead of the ones offered through the platform.

Expected monthly usage will be 10,000 calls, with an average of 2 minutes per call. For Voice, PlayHT will suit our needs.

What is my pricing breakdown?”
2

Providers

The providers used will determine per-minute cost. The following providers will be involved:

Transcriber: Deepgram
Model: custom model
Voice: PlayHT
Telephony: Twilio (receiving inbound phone calls)

The customer will be using a custom model & taking inbound phone calls.


3

Cost Breakdown

We will break down the costs of each piece of the voice pipeline, then later multiply by call volume:

Deepgram: ≈ $0.01/min
Custom Model: ≈ $0.04/min (vague assumption, can vary widely)
PlayHT: ≈ $0.07/min
Twilio: ≈ $0.02/min (inbound, toll-free) (see Twilio phone call pricing)
Vapi: $0.05/min
Our estimating costs guide can help you determine these values.
4

Final Estimate

Call Minutes / Month: 10,000 calls x 2 min/call = 20,000 call minutes

Transcription: $0.01/min x 20,000 = $200
Custom Model: $0.04/min x 20,000 = $800
Voice: ≈ $0.07/min x 20,000 = $1,400
Telephony: ≈ $0.02/min x 20,000 = $400
Vapi: $0.05/min x 20,000 = $1,000

Total: $3,800/mo

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Further Reading

Provider Costs

Learn more about where provider costs end up getting billed.

Estimating Costs

Learn more about determining per-minute costs for providers.

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