Comparison

Preview vs predictive dialer: which mode should you run?

Reviewed by Sujan ThapaliyaLast updated August 18, 2026

The short answer

A preview dialer shows the rep the record and dials on their signal, one call at a time. A predictive dialer places several calls per agent and connects whoever answers. Preview suits high-value lists where preparation changes the conversation; predictive suits large agent pools working cold lists.

Flat per-seat licensing plotted against metered usage over connected minutes: the licence is $750 a month regardless of use, metered calling starts at zero and rises at $0.020 a minute, and the two only meet at 37,500 connected minutes. Where your team sits on this chart decides most comparisons of this kind. — Most comparisons in this area resolve to volume rather than features.

Side by side

What is the difference between preview dialer and predictive dialer?

The differences that change a decision, not a feature checklist.

	Preview dialer	Predictive dialer
Calls per agent	One, dialled on the rep's signal	Several, paced by an algorithm
Rep sees the record first	Yes, and can skip it	No — the call arrives already connected
Abandoned calls possible	No	Yes, capped at 3% of answered calls
Minimum team size	One rep	Ten or more concurrent agents
Throughput	Lowest of any mode	Highest of any mode
Suits which list	Named accounts, renewals, high value	Large cold lists with a known answer rate
Regulatory load	Minimal	Pacing control, AMD, drop-rate monitoring, recorded message
Data quality effect	Improves it — reps skip bad records	Neutral — everything gets dialled

Which to choose

Which one should you use?

Preview when the conversation is worth preparing for

Named accounts, renewals, complex or regulated products, and any callback where arriving without context is worse than not calling. The skip is the feature: reps decline stale records, and the list improves as it is worked.

Predictive when you have the floor to support it

Ten concurrent agents is the practical floor, because the pacing algorithm needs room to be wrong without breaching the abandonment cap. Below that, the minutes saved never justify the exposure.

Power dialing is the answer for most teams

Between the two sits the mode most teams should actually run: one call per rep, dialled automatically. It removes the dead time without introducing abandonment risk, and it produces the connect-rate data you need before choosing anything more aggressive.

Frequently asked questions

Is predictive dialing worth it for a small team?

No. Under roughly ten concurrent agents the pacing algorithm has no room to correct itself, so a single mis-paced burst can consume the whole 30-day abandonment allowance. Power dialing gets most of the throughput with none of that.

Does preview dialing waste time?

Only on lists where there is nothing to read. On named accounts, the seconds spent reading the last interaction change the opening line, and the opening line is what decides whether the call continues.

Can I switch between modes?

Yes — they are campaign settings here rather than separate products. Preview the strategic accounts in the morning, power-dial the follow-up list in the afternoon, and reserve predictive for campaigns with the agent pool to support it.

Sources

Telemarketing Sales Rule — Federal Trade CommissionDo-not-call obligations, abandonment-rate limits for predictive dialing, and required call disclosures.
47 U.S.C. § 227 — Restrictions on the use of telephone equipment — Cornell Legal Information InstituteThe Telephone Consumer Protection Act itself — the consent requirements, calling-hours limits, and private right of action.
National Do Not Call Registry — Federal Trade CommissionThe registry that outbound calling lists must be scrubbed against.

Run both modes on one platform

You do not have to choose a product to choose a mode. Power, parallel, and predictive dialing are all in the base product; switch per campaign, per list, per hour of the day.

Every dialing mode included
No seat licences
Compliance guardrails on by default

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