VICIdial vs Five9: a cost calculator

Five9 bills you per agent per month and folds carrier minutes into that price. VICIdial bills nothing for the software and instead has you pay for a server plus your own carrier minutes. The two models look similar on a one-line invoice but diverge fast as you add agents, which is why a per-seat number and a per-server number are not the same animal.

If you want the full breakdown of the three things that actually cost money, read what VICIdial really costs. This post turns that into a side-by-side calculator.

The two pricing shapes

Five9 and similar dialer SaaS price per seat. Each logged-in agent is a recurring line item, and per-seat dialer SaaS typically runs on the order of $100 to $200+ per agent per month, with carrier minutes either bundled into the seat or marked up on top. Check their current pricing, because tiers and minute allowances move. The structural point is that your bill scales linearly with headcount.

VICIdial flips that. The software is free and open-source under the AGPL license, so the Predictive dialing engine that auto-dials multiple numbers per agent costs you nothing to license. You pay for a VPS, a virtual private server, plus a Carrier you bring yourself. A carrier is the telephony provider that originates and terminates your calls. You pay them per minute directly, and on a managed setup we never mark up those minutes.

Inputs for the calculation

To compare apples to apples, gather these:

• Agent count, the number of seats logged in at peak.
• Talk minutes per agent per day, your Talk time (time actually connected on calls).
• Your per-minute carrier rate, usually a fraction of a cent to a few cents.
• A server tier sized to your agent count.
• For Five9, the per-seat price and whether minutes are bundled.

A worked example: 25 agents

Say 25 agents, each with about 4 hours of talk time a day over 21 working days. That is roughly 5,000 talk minutes per agent per month, or 125,000 minutes across the team. At an illustrative 1 cent a minute that carrier bill is about $1,250. These are hypothetical figures to show the shape, not a quote.

On the per-seat side, 25 seats at a hypothetical $150 each is $3,750 a month, and if minutes are bundled at retail you are likely paying more per minute than wholesale. On the VICIdial side with Managed hosting (a flat per-server fee that folds in OS patching, backups, firewall, and SSL), you pay one server price regardless of seat count, plus that $1,250 in raw carrier minutes you control. A 25-agent box is not large, so the server line stays modest while your carrier line reflects actual usage.

How the inputs add up

flowchart TD
  A[Per-seat fee x agent count] --> F[Five9 monthly total]
  B[Bundled or marked-up minutes] --> F
  C[Server cost - fixed per tier] --> V[VICIdial monthly total]
  D[Raw carrier minutes - no markup] --> V
  E[Managed fee or your labor] --> V

Which way the math leans

For small teams the gap is narrow and a per-seat product can be the easier choice. As headcount climbs, the per-server model pulls ahead because you stop paying a tax per human and start paying for compute. Our setup is Single tenant, meaning one customer per server with no shared neighbors, and you get a Branded subdomain over HTTPS so the dialer carries your name. If you want a deeper look at the per-head angle, see our note on VICIdial cost per agent.

Plug your own numbers into the inputs above before deciding. When you want the current VICIfast figures rather than illustrative ones, the source of truth is our pricing page. Run both columns honestly and let the totals decide.