The simple formula
Average call length × calls per month = minutes.
Example:
- 2 minutes per call
- 120 calls per month
That’s 240 minutes.
Add a buffer
Add 10–20% for long calls and edge cases.
Why minutes matter
Minutes correlate to:
- how many callers you can serve
- how many summaries/transcripts you generate
- your overall monthly cost
Predictability is the whole point.