What it costs to start an AI agency
The fixed cost is $49 a month. The real number is the cash dip when your first client signs. Here is the month-one math at the cheap and expensive ends, and who should wait.
You can start an AI agency for $49 a month plus the cost of finding your first client. That is the whole fixed cost on Lumina Sales. The client work is separate and only shows up when someone signs: for a full Top Tier buildout, we publish a wholesale guide of $1,150 to $1,400 setup and $315 to $460 a month, plus $0.35 a minute on the voice line. You set the retail price and keep the difference.
That answer is accurate and also incomplete, because "cost to start" means three different things depending on who asks. This post separates them, shows the month-one cash math for a first client, and says plainly who should not start this way.
What does it cost to start an AI agency?
Three buckets, and people mash them together.
Fixed cost to exist. On our side this is the $49 a month platform. It gets you the demo site on your subdomain, the client portal, access to the fulfillment platform, onboarding help for closed deals, and 100 live voice minutes, 500 chat messages and 50 website audits a month for demos. It does not scale with client count. One client or twelve, it is still $49.
Cost to find a client. This is the one nobody can quote you, because it is your time or your ad spend. One voice-agency guide from Trillet puts a realistic starting budget at $299 a month, made of a $99 platform, $200 of ads and a landing page. That is one vendor's number for its own product, so treat it as a data point, not a rule. If you prospect by phone and message, your acquisition cost is hours, and the hours are the real price.
Cost to deliver a client. This only exists after a yes. It is the setup fee, the wholesale monthly and the voice minutes, agreed on a 30-minute pricing call for each build. Nothing is owed for clients you do not have.
So the honest figure for "what do I need in the bank before the first deal" is $49, plus whatever you choose to spend finding people, plus enough float to cover the first client's setup if you pay it before they pay you.
What does the first client cost in cash?
Use the top of every range, because planning against the best case is how you end up short.
Top Tier guide, upper end: $1,400 setup, $460 a month, and 300 voice minutes at $0.35, which is $105. Retail $1,500 a month with nothing charged upfront.
| You pay out | Client pays | Running total | |
|---|---|---|---|
| Month 1 | $1,400 + $460 + $105 + $49 = $2,014 | $1,500 | -$514 |
| Month 2 | $460 + $105 + $49 = $614 | $1,500 | +$372 |
| Month 3 | $614 | $1,500 | +$1,258 |
You are $514 down after month one and positive in month two. At the cheap end the same deal is far gentler. Tier One is a guide of $650 to $775 setup and $170 to $215 a month. Sell a Tier One build at $700 a month and you pay out about $1,039 in month one against $700 in, then clear about $436 a month after that.
If you want the longer version of this math with the sixty-day exposure laid out, it is in our post on the client payback period.
One caveat I will not paper over. When you pay the setup fee relative to when your client pays you is something to settle on the pricing call for your first build. Do not assume the order. Ask.
What are the small costs people forget?
Payment processing is the main one. Stripe lists 2.9% plus 30 cents per successful domestic card transaction, and 0.8% for ACH Direct Debit with a $5 cap. On a $1,500 invoice that is $43.80 by card or $5 by ACH. Over a year of one client, steering them to ACH saves you roughly $465. That is a real line item on a service you sell at a 60 percent margin.
The rest is small. A domain if you want a custom one. A business entity, which Trillet's guide says you can skip early at $100 to $500. I would not skip it once money is moving, but that is a tax and liability call for your own accountant, not me.
How does this compare to building the stack yourself?
Cheaper at the start, because you are not paying for infrastructure you have not sold. If you go direct, Vapi charges $0.05 a minute for hosting and passes transcription, model and voice costs through on top, with transport billed separately. The usage cost is small. What costs money is the time to wire up, test and maintain it for every client. The longer comparison is in is an agency in a box worth it.
How many clients make the $49 irrelevant?
One. At the top-of-range Top Tier numbers above, a client at $1,500 a month leaves you $886 after delivery and the platform fee. The $49 stops being a cost you think about the day the first invoice clears.
The more useful question is what a second and third client do to your cash. The platform fee stays flat, so each extra client adds the same $886, while each new setup fee lands as its own month-one dip. Sign two clients in the same month and you front $2,800 of setup at the high end before either has paid. That is the moment cash, not demand, limits how fast you grow. Space the closes, or price so the first invoice covers the setup, and the dip shrinks.
I would rather you plan for that than discover it. Float is the constraint that is easy to forget while you are busy chasing leads.
What should you charge so the trough stays small?
Retail has to cover three things before it is profit: the wholesale monthly, voice minutes at $0.35 a minute, and your share of the $49. At 300 minutes that is $105 of voice. A $700 retail on a $460 monthly leaves almost nothing. A $1,500 retail leaves a real margin. If a local owner will not pay close to the number that works, pick a cheaper tier instead of discounting the expensive one. Our post on how much to charge for an AI buildout walks through the three ways people set the number.
Who should not start this way?
Three kinds of people.
If you have no way to find prospects, the platform will not fix that. You still need conversations with owners. Start with our first ten clients post before you pay for anything.
If you want to own the technology, this is the wrong move. You are selling and running a fulfilled product under your brand, and you do not control what is under it.
If you cannot absorb a $500 to $2,000 dip in month one, wait until you can. The model is cheap to enter and still has a cash trough. Pretending otherwise is how people churn out of their first client.
FAQ
Is there a build fee on Lumina Sales? Not on your side of the client relationship in the sense of a retail build invoice you must charge. You pay a wholesale setup per client order, and you choose whether to pass it on or fold it into a monthly. Our post on setup fee versus monthly pricing covers when each makes sense.
Do I pay anything for demos? The demos run inside the $49 plan: 100 live voice minutes, 500 chat messages and 50 website audits a month, with calls capped at five minutes each. That is about forty demo calls. Hit the cap and the live parts pause until the cycle resets, and there is no usage invoice.
What if I cancel? Cancel from the billing portal. Published demos unpublish and everything you built stays as a draft until you resubscribe.
Can I start with one client and no demos? Yes, but I would not. The live demo is how the sale closes, so skipping it saves you nothing and costs you the close.
Next step
Try the live demo as if you were the prospect, then work out what you would charge your first local client using the ranges above. If the month-one dip fits your cash, start here and book the pricing call for your first build.