How does the AI voice agency migration cost calculator work?

Enter what you spend each month to keep your current voice stack running: the voice engine like Vapi or Retell, your CRM like GoHighLevel, the automation glue like Zapier, telephony like Twilio, and the developer hours you burn maintaining the duct tape. Add the number of clients you run. The calculator totals your real monthly cost, then maps you to the Hermes plan that fits your client count, one platform that replaces all of those line items under your own brand. It returns your new monthly cost, your monthly and annual savings, the developer hours you stop paying for, and a payback period in days that accounts for the one-time effort of moving accounts over. Everything runs in your browser and the share link carries every input, so you can send a partner the exact same numbers.

How much does it cost to run an AI voice agency stack?

Most operators underestimate it because the cost is scattered across five or six invoices plus their own time. A typical scaling agency pays for a voice engine, a CRM seat, an automation tool, a telephony account, and then loses several hours a month to a developer or to themselves wiring it all together and fixing what breaks. Add it up and a three-to-ten client agency often spends well over a thousand dollars a month before a single minute of talk time, with developer hours the single largest and least visible piece. The calculator surfaces that hidden labor cost in dollars so you can compare it honestly against a single platform price, instead of pretending the glue work is free because no one sends you an invoice for it.

What does Hermes replace when I migrate?

Hermes is the operating layer for an AI voice agency, so it collapses the stack into one platform under your brand. It replaces the voice engine, the CRM, the campaign and automation layer, the billing logic, and the custom dashboard your developer built to glue them together. Your clients never see the word Hermes, they see your portal. You keep the voice agent builder, contact CRM, inbound and outbound campaigns, transparent usage billing, and white-label portals in one login instead of switching between Vapi, GoHighLevel, Zapier, Stripe, and Twilio tabs. The piece most operators feel first is the disappearance of glue maintenance, because there is no longer a Zapier zap to babysit or a webhook to debug at midnight when a client call does not log.

What is the payback period when switching to Hermes?

Payback is how many days of savings it takes to recoup the one-time effort of migrating your accounts. The calculator estimates the switch cost from your developer rate and your client count, since moving each client means rebuilding the agent, importing contacts, and reconnecting calendars, then divides that one-time cost by your daily savings. For most agencies the payback lands inside a few weeks, often days, because the monthly savings from cutting four or five subscriptions plus recovered developer hours is large relative to a contained migration effort. If your current stack is cheap and you carry no developer cost, payback stretches out, and the calculator will show that honestly rather than pretend every agency should switch tomorrow.

Which Hermes plan will I be on after migrating?

The calculator maps your plan to your client count, because Hermes plans are sized by workspaces, one per client. Starter is one hundred forty-nine dollars a month with three workspaces and three hundred included minutes, which fits a solo operator with one to three clients. Business is three hundred ninety-nine dollars with seven workspaces and a thousand included minutes for a growing book. Agency is six hundred ninety-nine dollars with twenty workspaces and two thousand included minutes for an established shop. Past twenty clients you move to Pro, which is custom volume pricing. Overage past your included minutes is twenty-four cents a minute on every plan. The calculator uses the plan subscription as your new fixed cost so the comparison against your current fixed tool spend is apples to apples.

Does the calculator account for usage and overage costs?

It compares fixed platform cost to fixed platform cost, which is the fair way to judge a migration. Your current voice-engine bill already includes the minutes you talk, so the calculator treats that whole number as your present cost and treats the Hermes plan price as your future fixed cost. It does not silently bury per-minute overage on the Hermes side, because that would tilt the math. In practice your talk-time cost moves with you either way, and Hermes overage at twenty-four cents a minute is competitive with what the standalone engines charge once you add their platform fees on top. If you want the full picture with your real minute volume and margin per client modeled in, book a twenty-minute walkthrough and we will build it with you against your actual account list.

free tool

AI Voice Agency Migration Cost Calculator

Add up what your duct-taped voice stack really costs, Vapi or Retell plus GHL, Zapier, Twilio, and developer hours, then see your Hermes cost, monthly savings, dev hours saved, and how fast a switch pays for itself.

/ your current stack (monthly)

Voice engine (Vapi / Retell)Platform fee plus minutesCRM (GoHighLevel)Agency or sub-account planAutomation (Zapier / Make)The glue between toolsTelephony (Twilio)Numbers, A2P, carrier feesDeveloper hours / monthMaintaining and fixing the glueDeveloper rate ($/hour)Your own time counts tooNumber of clientsSets your Hermes plan and switch effort

/ monthly savings

$1,168

$14,016/year saved

/ dev hours saved

10/mo

120 hours a year

/ payback

35 days

to recoup the switch effort

/ current stack vs Hermes

Subscriptions today (voice + CRM + glue + telephony)$817/mo

Developer cost (10 hrs × $75)$750/mo

Your current total$1,567/mo

Hermes Business for 6 clients$399/mo

One-time switch cost (18 hrs × $75)$1,350

/ plan fit 6 clients fits the Business plan ($399/mo, 7 workspaces, 1,000 included minutes). Overage past included minutes is $0.24/min.

Book a 20-min walkthrough to cut this number.

We will map your migration account by account, confirm the savings, and size the right Hermes plan with you. One platform, your brand, from $149/month.

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Your inputs are encoded in the URL. Send it to a partner and they see the same numbers.

how it works

What a stack migration actually costs, and saves.

The reason tool sprawl is so expensive is that the cost hides. You see the Vapi invoice and the GoHighLevel invoice, but the developer hours spent gluing them together, the Zapier tasks, the Twilio line items, and the midnight debugging when a webhook drops never show up as a single number. This calculator forces all of it into one place so you can see the real run rate of your current stack before you compare it to anything.

The math is deliberately simple and honest. Your current monthly cost is the sum of every subscription plus your developer hours times your developer rate. Your Hermes cost is the plan that matches your client count, one fixed price for the whole platform under your brand. The difference is your monthly savings, and twelve times that is your annual savings. The developer hours line is called out separately because for most scaling agencies that recovered time is worth more than the subscription savings, and it is the piece operators forget to price.

Migration is not free, so the tool also estimates a one-time switch cost from your developer rate and client count, the work of rebuilding each agent, importing contacts, and reconnecting calendars. Dividing that by your daily savings gives a payback period in days. On Hermes the whole stack runs under your own brand from one hundred forty-nine dollars a month, with overage at twenty-four cents and compliance passed through at cost, so the savings you see here are the savings you keep.

frequently asked

Common questions.

next step

Plan your migration in 20 minutes.

One platform. Your brand. From $149/month, with overage at $0.24 and 80%+ margins on every account.

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Want the full breakdown for your agency? Book 20 minutes and we will map your migration account by account and size the right Hermes plan with you live.

AI Voice Agency Migration Cost Calculator

What a stack migration actually costs, and saves.

Common questions.

Plan your migration in 20 minutes.

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