use case
verified July 2026
TTS for outbound sales agents.
Outbound is the workload where the meter hurts most: the whole point is to talk more, and every extra conversation is billed. A dialer that succeeds on a meter gets punished for succeeding.
01
The cost shape
A dialer keeping one line in conversation six hours a day runs about 10,800 minutes a month. On published meters of $30–$100 per million characters that is $324 to $1,080 per line, every month, scaling with connect rate. On a flat line it is $150, and a better month costs the same as a worse one.
Table 1 — One outbound line, one month
| Talk time / day | Minutes / mo | On a meter | Gandr flat |
|---|---|---|---|
| 2 h | 3,600 | $108 – $360 | $150 |
| 4 h | 7,200 | $216 – $720 | $150 |
| 6 h | 10,800 | $324 – $1,080 | $150 |
02
What a dialer demands of synthesis
- First audio fast enough that the pickup moment is not silence — the first second decides whether they hang up.
- A distinct cloned voice per campaign or rep, from a ten-second reference each — no training pipeline per campaign.
- Burst lines at $10 a line-day for the end-of-quarter push, instead of a busy signal on the best week of the quarter.
03
The forecast
Sales leaders forecast connects and talk time; finance forecasts cost. On a meter those are the same unknown. On lines the voice-infra cell of next quarter’s model is lines times rate, and it is already filled in.
See also
Related sheets.
use case
500
TTS for debt-collection voice agents
Collections dialers speak required disclosures on every connected call. The cost arithmetic of scripted outbound, per-key audit trails, and provenance watermarks.
use case
2,000 min
TTS for appointment reminders and notifications
Reminder traffic is bursty and short-form. Where a meter genuinely wins, this page says so — and where burst lines beat both, it shows the arithmetic.
capability
$10
Burst lines: capacity priced by the day
Traffic past your committed lines spills to burst lines at $10 a line-day, capped in your dashboard — capacity for spike days without paying for them all year.
glossary
1 line
Concurrent lines
A line is one simultaneous conversation. Why concurrency — not minutes — is the real capacity unit for voice agents, and how metered plans cap it quietly.
Thirty minutes, your production script, the live latency readout — measured in front of you.
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