How many agents you need before predictive dialing pays off
Predictive is the most aggressive mode and the one most often sold. It is also the one that performs worst in small operations, for a statistical reason worth understanding before you buy it.
In short
- Predictive needs 20 agents or more to predict well.
- With fewer it oscillates: agents wait, or it over-launches and abandons.
- Below that threshold, progressive delivers more real conversations.
- The right mode is chosen by size and campaign type, not by which sounds better.
The five modes, in one table
| Mode | Calls per free agent | Suits from |
|---|---|---|
| Preview | The agent decides | Any size |
| Progressive | 1 | 1 agent |
| Power | Fixed multiplier (2x, 3x) | 10 agents |
| Predictive | Calculated live | 20 agents |
| Broadcast | No agent | Mass notifications |
Why predictive needs volume
Predictive does not guess: it calculates. It measures what share of the calls it launches ends in conversation and uses that to decide how many to launch so no agent sits idle.
That calculation needs samples. With 5 agents, a couple of unusual calls move the whole average and the system oscillates: one minute everyone is waiting, the next it over-launches and calls get dropped. The statistics have nothing to hold on to.
What to use in each case
Small operation (under 20)
Progressive. One call per free agent: zero abandonment and no oscillation. You use idle time less efficiently, but predictably.
Mid-sized or large (20+)
Predictive, as long as the dialer controls abandonment automatically. If someone has to watch it by hand, power mode with a conservative multiplier is safer.
High-value list
Preview. The agent reviews the record before dialing. You lose calls per hour, but in complex sales preparation is worth more than volume.
The factor nobody looks at
Before raising aggressiveness, check how many of the calls that do get answered are voicemail. If it is 15%, your agents are already losing time on machines, and speeding up the dialer only hands them more voicemails per hour.
Fixing that usually pays off more than changing mode: what each voicemail costs you.
All five modes in the same engine: you switch per campaign, without migrating anything. Predictive comes with automatic abandonment control, and it can be used only as a dialer if you already have your own CRM.
See the dialer →Frequently asked questions
How many agents do you need for a predictive dialer?
From about 20 concurrent agents. With fewer, the statistical calculation does not have enough samples and the system oscillates between leaving agents idle and over-launching.
Which mode suits fewer than 20 agents?
Progressive: one call per available agent. It generates no abandonment and behaves predictably, even though it uses idle time less efficiently.
Can you switch modes without changing systems?
In a well-designed dialer, yes: the mode is a campaign setting, not a different installation.
Not sure which mode suits you?
We review your operation and tell you which one performs better at your current volume.
Let us talk