How much does an AI voice agent cost per call?
Want to work out an AI voice agent's cost per call? This page turns that question into a real number. It is aimed at teams automating phone support, who need a defensible monthly figure before they ship. Change the volume and token sizes to match your own product and the estimate updates instantly.
Results update automatically as you type.
- STT / min
- $0.00600
- LLM / min
- $0.000300
- TTS / min
- $0.00750
- Per call
- $0.0690
- Per month
- $1,035.00
Why this isn't trivial
The part people underestimate: a voice call stacks three costs — transcription per minute, LLM tokens per turn, and speech synthesis — so call length multiplies everything. In practice the biggest savings come from shortening spoken responses and using cheaper STT/TTS tiers, so it is worth modelling before you commit.
How it's calculated
We estimate this by adding per-minute transcription, per-turn LLM cost and per-character speech synthesis across a typical call length. Every figure uses the current provider prices baked into the site (reviewed daily), and you can override any input to match your own assumptions.
Frequently asked questions
Which part of a voice call costs most?+
It varies, but transcription and speech synthesis per minute often rival the LLM cost for longer calls.
How do I cut voice agent cost?+
Keep spoken replies short and pick efficient speech models; long monologues are expensive to synthesize.
Are these prices up to date?+
Yes. The model prices behind this calculator are refreshed and reviewed daily, so your estimate reflects current provider rates rather than a stale snapshot.
Related
Estimates for planning. Pricing data last reviewed 28 July 2026.