Voice AI Call Cost Calculator

Enter your call volume and provider settings. See your true monthly cost — including how much you're wasting on calls that fail before delivering value.

Default $0.0140/min (US PSTN). Check your Twilio dashboard.

0% (perfect)20% (high)

~500 chars ≈ 60 words ≈ 25 seconds of agent speech

Monthly Cost Breakdown

Twilio telephony (5,000 calls × 3.5min × $0.014/min)$238
ElevenLabs TTS (2406K chars — Starter ($5/mo, 30K chars))$718
Monthly total$956

Cost Per Successful Call

$0.1982

4,750 successful calls out of 5,000 total

Cost of Failures

You are spending $14.28/month on calls that fail before delivering value — that's $171/year in direct waste.

250 calls fail each month. Each still costs you in Twilio minutes and partial ElevenLabs TTS generation.

What If You Cut Your Failure Rate by 50%?

$7.14/mo

monthly savings at 2.5% failure rate

$85.65/yr

annual savings

🔍 Sherlock identifies the failure patterns costing you the most

And gives you the fix — not just the number. Connect your Twilio and ElevenLabs accounts once. Get root-cause analysis in Slack on every failure.

Add Sherlock to Slack — free, 100 credits →