Auto dialers: power, predictive and parallel

An auto dialer is software that places outbound calls for your reps so nobody types numbers. It pulls the next contact from a list or your CRM, dials, connects the rep when someone answers and logs what happened.

There are four main kinds: power, predictive, parallel and preview (with plain manual dialing as the fifth option). They differ on one question: does the software wait for the rep, or dial ahead? That decides your speed, your bill and which calling rules you need to watch.

We've run sales floors on several of these tools. Prices and rules were checked on October 20, 2026.

What is a power dialer?

A power dialer calls the next contact the moment the rep is free. When someone answers, the rep is already on the line. Nobody dials by hand, and the software never calls ahead of the rep. Some vendors call this a progressive dialer. Our guide to how power dialers work and what each vendor charges per seat goes plan by plan.

A good power dialer gets a rep through 60 to 80 calls an hour. Some run more than one line per rep: Kixie's Multi-Line PowerDialer dials up to 4 lines at once (how it compares with Aircall's), and Mojo sells a triple-line dialer. At that point it's really parallel dialing (below).

The catch: on a single line, the rep sits through every ring and voicemail. You get fewer conversations an hour than with parallel or predictive dialing, but every answer reaches a rep who's ready.

What we learned on the ReadyMode dialer and Wavv

ReadyMode is the dialer we used most, and it worked well. The problem was the predictive and parallel dialing itself: it burns through data. A fairly small team went through about 30,000 leads a month. Answering machine detection (below) left a pause after people said hello that lost their trust, and our numbers got flagged as spam, which burned more leads. We paid about $250 a seat at the time.

We liked Wavv, which we ran inside GoHighLevel. But it ran as a layer on top of the CRM, and that made everything a little laggy.

That's our experience from when we used them, not a review of them today. Leaving ReadyMode? Here's what we'd switch to and what each option costs.

What is an AI power dialer?

An AI power dialer is a power dialer with AI on top. The dialing works the same way; the AI tells a live voice from a voicemail, transcribes and summarizes calls, and coaches reps.

Most vendors sell the AI as an extra. Kixie lists AI Human Voice Detection as a premium add-on on its Multi-Line PowerDialer. Aircall sells AI Assist Pro for $49 a user a month on top of the seat. Aloware's uPro plan bundles AI transcriptions and call summaries into the $60 seat. Price the AI line by line: on Aircall it nearly doubles the seat.

What is a predictive dialer?

A predictive dialer calls more numbers than you have free reps, betting most won't pick up. Each answered call goes to the next free rep. The cost of that bet is abandoned calls: someone answers and nobody's there. Our predictive dialer explainer shows the pacing math and where it breaks on small teams.

You control it with a target abandon rate. In ReadyMode's settings, the default is 2.5%. The federal limit is 3% (the TCPA rules).

What is answering machine detection?

Answering machine detection (AMD) listens to the first moments of an answered call and guesses whether a person or a voicemail picked up, so reps skip voicemails.

The cost is a pause. The dialer has to hear enough to decide, so the person says "hello" and hears nothing. Faster settings shorten it but mean more wrong guesses.

In our experience, that pause is where you lose people: they decide it's a robocall, hang up, and some report the number. The rules also give you only 2 seconds after their greeting to connect a rep (TCPA rules for sales calls). If you use AMD, test what the person on the other end actually hears.

How many reps does a predictive dialer in a call center need?

Roughly 10 to 15 reps on the phones at the same time. Below that, the dialer's guesses about who will be free break down, and you get more dropped calls or idle reps. Predictive dialer software is a call-center tool (which vendors sell it and what a seat costs); a small team does better on a power or parallel dialer.

What is a parallel dialer?

A parallel dialer has each rep's line call several numbers at once. The first person who answers goes to the rep, and the other calls drop. The rep still only gets one live call at a time.

Most dials don't connect. On cold lists, about 1 in 20 dials reaches a person (5.3% across Orum's platform in 2023). Dialing 4 or 5 at once means the rep isn't sitting through rings.

Some phone systems sell parallel dialing as an add-on on top of the seat; here's what CloudTalk's parallel dialer adds to the bill next to Aircall.

The catch: when two people answer at once, one of them gets dropped. That's an abandoned call, and the same 3% limit applies. Parallel dialing doesn't get you around the rules.

What is a preview dialer?

A preview dialer shows the rep the contact's record first, and the rep starts the call when ready. A manual dialer goes one step simpler: the rep clicks a number and one call goes out. Click-to-call usually comes built into a CRM or phone system, like HubSpot's calling tool or Aircall's browser extension.

The trade-off is speed: 15 to 20 calls an hour by hand, against 60 or more on a power dialer. In return, the rep walks into every call prepared, which suits long B2B sales and regulated industries.

Power dialer vs predictive dialer: what's the difference?

A power dialer waits for the rep; a predictive dialer dials ahead of them. Here's how all five types compare:

Vendors use these names loosely, so check the line count on the exact plan, not the label.

How much does auto dialer software cost?

Most auto dialer software charges per user per month, and many vendors keep the dialer off their cheapest plan. US list prices from each vendor's pricing page, October 20, 2026:

Of the per-seat vendors, the cheapest power dialer here is JustCall's Pro plan, if you bill annually. But the seat is only part of the bill. Phone numbers, calling minutes, spam monitoring and your CRM all come on top. The sales software pricing index has every plan side by side, with the extras.

Is a CRM with dialer built in worth it?

Yes, in most cases. A CRM with the dialer built in is the best way to run a sales floor we've found. The rep calls, sees the customer, logs the outcome and books the next step without switching tabs, and the manager's numbers are always current. There are three ways to connect them:

Test it in a trial: does the outcome land on the CRM record within seconds, do recordings attach, and does the call list pull live from the CRM? More in our CRM guide, and our CRM with dialer comparison shows which CRMs ship a real dialer and what each costs per rep.

What's the best dialer for cold calling?

The best dialer for cold calling is the one that matches your team size and your CRM. Pick the type first, then the vendor:

Our picks by situation, from the vendors' own pages:

• A small team on a budget: JustCall Pro or Aircall Professional. Both put a power dialer in a $49 to $50 seat on annual billing. Aircall needs 3 licenses, JustCall 2. More options in our roundup of Aircall competitors and what they cost.
• Multi-line cold calling: Kixie (up to 4 lines) or Wavv (up to 3). Orum sells parallel dialing to bigger teams: the minimum is 9 seats, and pricing is by quote.
• GoHighLevel users: Wavv runs inside GoHighLevel, and Kixie lists HighLevel as a native integration.
• Real estate agents: Mojo. Its add-ons are built for agents: expired listings, for-sale-by-owner leads and skip tracing. Our guide to real estate auto dialers and the Do Not Call rules on expired listings compares it with REDX at 10, 25 and 50 agents.
• Call centers dialing at volume: a predictive dialer such as ReadyMode, with someone who owns the abandon-rate settings.

Before you sign, price it at 10, 25 and 50 reps with numbers, minutes and add-ons (the SaaS cost calculator adds up your current stack), run the CRM test above, and ask what the dialer does when a number gets flagged.

Are auto dialers illegal?

No, not by themselves. No federal rule bans a type of dialer. What's regulated is the calls it makes: whether you have the right consent, when you call, whether the number is on a Do Not Call list, and how fast a rep picks up when someone answers. Predictive and parallel dialers carry the most risk, because the law caps how many answered calls can be dropped (3%). State laws add stricter hours and call limits.

For the full rules in plain English, with links to the source text, read our guide to TCPA rules for sales calls. It's not legal advice; talk to a telemarketing lawyer before you launch a calling program.

Why do your calls show Scam Likely or Spam Likely?

Scam Likely and Spam Likely are labels that carriers and their analytics partners put on the caller ID of numbers they think are unwanted. Each carrier uses its own wording: Verizon's Call Filter shows "Potential Spam", and AT&T's ActiveArmor shows "Spam Risk". The biggest triggers are people reporting your calls and one number calling a lot of strangers, and no carrier publishes a calls-per-day limit, so you find out when answer rates drop. Spam flags cost us more time than anything else on a rented dialer: ReadyMode told us when a number was flagged but didn't fix it, so swapping numbers became a full-time spreadsheet job. Register your numbers free on the Free Caller Registry, test-call each carrier, and don't pay anyone who promises removal. Full guide: Spam Likely: why your business number is flagged.

What is local presence dialing?

Local presence dialing means calling from a number with the prospect's area code, so the call looks local. Most dialers offer it, often as an add-on, and it means keeping a pool of numbers across the area codes you call.

Vendors claim big jumps in answer rates without saying how they measured it. Test it yourself: call half your list with a matching area code and half without, then compare.

Is it legal? The FCC rules don't ban it by name. What's illegal is faking caller ID to defraud or cause harm (47 U.S.C. 227(e)). Call from numbers your business actually owns.

The catch: every extra number can get flagged, so register and watch all of them.

Should you own your auto dialer system?

Not if your dialer and CRM cost under $1,000 a month and fit how you sell. Keep them.

It starts to make sense when the dialer, CRM and the tools holding them together run a few thousand dollars a month and the bill grows with every hire. In our experience, you hire 10 reps and 3 or 4 stick, but you pay for all 10 seats.

One client's sales floor paid about $4,500 a month for eight closers: a per-seat dialer, a per-seat CRM, a scheduling tool and a Zap that broke whenever a vendor shipped an update. Every new rep added $560 a month. We replaced all four with one system they own. Hosting runs about $300 a month, and each new seat costs $0. Read the case study.

That's what Cleanform does. We build the system around how your team sells, and you own the code, the data and the IP (custom CRM development). It typically costs less than you spend on software today, and the payments have an end date (how pricing works).

Our dialer comparisons and case studies are below. Want your own number? Add up your software stack in two minutes, or book a free stack audit.

Own your dialer instead

Dialer software comparisons and guides

Case studies

Frequently asked questions

What is a sales dialer?

A sales dialer is an auto dialer built for sales teams. It pulls the next contact from a list or your CRM, places the call, connects the rep and logs the outcome, so nobody types numbers.

What is the difference between a power dialer and an auto dialer?

Auto dialer is the umbrella term for any software that places calls for you. A power dialer is one kind: it dials the next number only when the rep is free. Predictive and parallel dialers are auto dialers too, but they dial ahead of the rep or several numbers at once.

Which phone dialer is best?

It depends on team size. A single-line power dialer suits most small teams, a parallel dialer suits cold calling on lists with low connect rates, and a predictive dialer suits call centers with 15 or more reps on the phones at once. Pick the type first, then compare vendors on cost at your headcount and how well they connect to your CRM.

How much do auto dialers cost?

Most auto dialer software charges per user per month. US list prices checked October 20, 2026 run from $49 a user (JustCall Pro, billed annually) to $183 a user (PhoneBurner's top plan, billed annually), and several vendors don't publish prices at all. Phone numbers, minutes and add-ons cost extra.

Are power dialers illegal?

No. No federal rule bans a power dialer. The calls it makes still have to follow the consent, calling-hours, Do Not Call and abandoned-call rules. This isn't legal advice.

How does a PhoneBurner work?

PhoneBurner is a power dialer: it dials the next contact as soon as the rep finishes a call, on every plan. Its US list prices were $140 to $183 a user a month billed annually, or $165 to $215 billed monthly, on October 20, 2026.