Which AI voice agent is best for bulk calling campaigns?
The best AI voice agent for bulk campaigns lets you upload a list, schedule within permitted hours, retry sensibly, screen against DND and scale concurrency without a surprise bill. Check how many calls run at once, what throughput that gives and how every unanswered attempt is billed.
What makes a bulk campaign tool good
Bulk calling is about throughput and control. You need to know how long a list will take, what it will cost and what happens to contacts who do not answer. The tool should make those answers plain before you press start.
Criteria
- —CSV upload with field mapping for names and custom variables.
- —Scheduling and calling windows that respect permitted hours.
- —Automatic retries and callbacks at set intervals.
- —DND screening before dialling.
- —Clear concurrency: how many calls run at the same time.
- —Live progress, and pause or stop controls.
- —Per-call records and a campaign summary with outcomes.
Understand concurrency before you buy
Concurrency is what really limits a campaign. A claim of high call volume means little unless you know how many calls run in parallel. At Outpero, concurrency is sold as channels: a channel is one call at a time on your number, and each extra channel costs ₹649/month, add or remove any month. Five channels means five calls at once.
| Channels | Approximate dials per hour | Roughly 1,000 dials takes |
|---|---|---|
| 1 | 55 | 18 hours |
| 3 | 165 | 6 hours |
| 5 | 275 | 3.6 hours |
Each channel works through about 55 dials an hour, so the figures are rough and depend on how long calls last.
Questions to ask each vendor
- 01How many calls can run at once, and what does more capacity cost?
- 02Are unanswered calls billed?
- 03How are retries scheduled?
- 04How does DND screening work?
- 05Can I pause a campaign and edit the script mid-run?
Where Outpero fits, and where it does not
Outpero's bulk campaigns have scheduling, calling windows, auto-retries, callbacks and DND screening, billed per connected minute at ₹5 or ₹6.8, excluding 18% GST, with unanswered calls free. For very large volumes it offers custom rates and setup help.
Some vendors advertise much higher parallel capacity. If you need hundreds of simultaneous calls, ask each vendor for specifics. Outpero publishes this page, so compare quotes on the same list.
Want to hear an AI voice agent handle this on a real call?
Follow-up questions
Is voice broadcast a better fit for bulk reminders?
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If the message is fixed and needs no conversation, such as an announcement or alert, a voice broadcast can be cheaper because it plays one message and ends. If the call needs answers or bookings, use an AI conversation. Outpero offers both, with broadcast billed at a lower rate.