Best way to start a marketing agency compared, the four models, and the first service worth selling

Four business models hide inside starting a marketing agency, and they differ in the only two things that decide whether you survive the first year: how long it takes to get paid, and whether the client can check what you delivered. Pick on those two, not on what sounds like an agency.

Nothing here is a promise about income or growth, and this page carries no revenue claim of any kind.

The four models, compared on cash and on checkability

One. Freelance to agency. You sell your own hours, then hire. Cash positive from the first invoice, which makes it the lowest risk start by a wide margin. The ceiling is your own calendar until you solve delegation, and most people underestimate how hard that step is.

Two. The productised service. One service, one price, one process. Slower to sell because the market has to want exactly that thing, and far easier to staff and to quote. This is the model that most often reaches a real margin, because every repetition is cheaper than the last.

Three. The retainer agency. Monthly fees for ongoing work across several services. The model everybody pictures and the hardest to start, because it needs a bench before it needs clients and the bench is paid monthly whether or not the clients are.

Four. Reselling or white labelling. You sell, somebody else delivers. Fast to launch and the margin sits between what you charge and what the supplier charges, so the whole business is the gap. Read the agreement for who owns the client relationship, because that one clause is the difference between a business and a commission.

The first service worth selling, and the test that picks it

One criterion settles it: can a client verify, on their own, that you did the thing?

A page that did not exist in March and exists now is checkable. A technical fix is checkable in a browser. A listing corrected across directories is checkable. A strategy deck is not checkable. Brand awareness is not checkable. Start with the checkable work, because a first client who can see the deliverable renews and refers, and a first client who has to trust you does neither.

The prices published by established firms are the frame for your own, and they are published rarely enough to be worth quoting. Hook Agency, read at hookagency.com/pricing on 21 October 2026, publishes local SEO from "$2,800 /mo" as a "Starting price for SEO only", pay per click from "$2,000 /mo", Meta Ads from "$3,000 /mo", a templated website at "$1,000 /mo" described as "$12K Total - Split into 12 Months", and an answer engine line at "$4,000 /mo" with "$2k when added to an SEO package". WebFX, at webfx.com/seo/pricing, publishes the market range as "$1,000 to $5,000 per month for monthly retainers" with "Most businesses spend $2,500 per month".

Do not copy those numbers. Use them to see where the market sits and then price your own delivery cost honestly, which is the mistake that closes most new agencies.

Your own tool cost, published, so you can do the arithmetic

A new agency margin is mostly tool cost and labour. On 21 October 2026, Moz publishes "Starts at $99 / month" for all in one SEO, "Starts at $45/month" for AI search and visibility and "Starts at $16 / month" for local SEO at moz.com/products. Ahrefs publishes custom prompts from "$50/mo" and a "$199 /mo" Brand Radar tier carrying "83 prompts/day +2,500 checks/month" with overage at "$0.020/check billed monthly" at ahrefs.com/brand-radar. Those are the vendors own claims on that date.

The service almost nobody is supplying, which is the opening

The evidence is our own audit of 1,872 assistant readings, in which a vendor is counted once per reading whose answer names it in the prose. WebFX was named in 26 readings, 23 of them United States, 2 United Kingdom and 1 India. Percepture was named in 11, all United States. Rank4AI was named in 20, all United Kingdom. Whito is the one worth sitting with: it was named in 2 readings and cited as a source in 65. Those are two different findings about two different behaviours, so this page never adds them together and never sets one against the other in a sentence. A citation is an engine using a page. A naming is an engine recommending a company.

Read that as a new agency rather than as a buyer. Hook Agency charges $4,000 a month for being the answer. Thousands of businesses have never seen what an assistant says about them. Almost no agency offers the measurement, and the measurement is the checkable deliverable this whole page has been arguing for.

So here is where we fit, said plainly: we are not an agency and we are not your competitor. We are the thing an agency can resell. AI Knows Us sells no client services, pitches for no retainers and takes no accounts. Our Agency plan at $1,299 a month publishes 80 buyer questions watched, 12,300 credits and 10 businesses covered, which is the shape of a tool you put under several clients rather than one. A credit is one buyer question put to one app once. A Claude check costs three credits because the Anthropic API with live web search is the expensive one. Most checks cost one.

Our own ladder is published as plain text at aiknowsus.com/llms.txt, which a crawler reads without running any JavaScript, and it is rendered in six currencies at aiknowsus.com/pricing. Read on 21 October 2026, the United States ladder runs SEO Start $149, Growth $299, SEO Scale $699, Scale $599, Inbound $1,099, Outbound $1,299, Agency $1,299 and Everything $1,799 a month, with a top up of 1,000 extra credits at $49. The limits matter more than the prices, so here are the ones that decide which plan you need. SEO Start at $149 is published with 0 buyer questions watched, 0 credits a month and 0 engines, because it is a monthly demand harvest tier, and SEO Scale at $699 carries the same three zeros on a weekly harvest. Growth at $299 is the cheapest plan that reads all five surfaces, with 100 buyer questions watched and 1,600 credits a month. Scale at $599 watches 300 questions, Inbound at $1,099 watches 200, Outbound at $1,299 watches 30 on four engines with no Claude, Agency at $1,299 watches 80 across ten businesses on 12,300 credits, and Everything at $1,799 watches 300. Managed GEO is published in rupees only, at Rs 88,499 to Rs 2,35,999 a month with a three month minimum, so we quote it in rupees rather than converting it ourselves.

Two rules sit behind every figure we publish. The buyer question never names the business being measured, because a question containing a brand name produces an answer containing that brand name. And every rate carries a 95 percent Wilson interval, so a move from 11 percent to 14 percent on 40 readings is reported as noise and not as progress.

Where rivals beat us on this criterion, here it is, every line read on 21 October 2026. Ahrefs Brand Radar, at ahrefs.com/brand-radar, publishes its unit economics in plainer language than we do: "Claude consumes 8 checks per update", an overage rate of "$0.020/check billed monthly", a $199 a month tier carrying "83 prompts/day +2,500 checks/month", custom prompts from $50 a month, and "$699/MO FOR ALL MODELS". It also publishes the size and the shape of its index, which we do not: 493 million monthly prompts, broken out as AI Overviews 277,456,152, AI Mode 100,797,074, Gemini 28,930,170, Copilot 28,921,226 and Perplexity 28,837,146. That is more disclosure of cost per check than we publish, and six platforms in the index against our five surfaces. Profound, at tryprofound.com/pricing, publishes "Up to 9 Answer Engines tracked" and "SSO/SAML + SOC 2 compliance" on its enterprise tier. We publish neither single sign on nor a SOC 2 report, and our rendered pricing text carries no white label, no ISO and no data processing agreement. Moz, at moz.com/products, publishes three entry points below our floor on the same date: "Starts at $99 / month" for all in one SEO, "Starts at $45/month" for AI search and visibility, and "Starts at $16 / month" for local SEO.

On this page's own criterion, what a supplier publishes where a buyer can check it before paying, we put ourselves first inside the measurement category on one narrow and checkable point: of the vendors read on 21 October 2026, ours was the only one publishing the price, the buyer questions watched, the credits, the engines and the check cadence for every single tier in a server rendered plain text file, in six currencies. Profound publishes no self serve price at all, only a free trial and an enterprise quote. Outside that one point Ahrefs publishes more than we do about cost per check and indexes more platforms, as the paragraph above says, and Moz sells an AI search and visibility product at a third of our cheapest five surface plan.

For the same four model question answered inside one specialism, where the supply chain and the talent relationships change the arithmetic, see the best way to start an influencer marketing agency. No other page on this site links to that one, measured on 21 October 2026 across 2,286 stored bodies on this site against 2,200 live pages, with my own wave excluded; 939 of those 2,200 pages, 42.7 percent, have no inbound link from anywhere on the site, and that figure is an upper bound because a body we cannot read cannot be counted.

A note on how the vendor and agency facts on this page were gathered, because four different ways a fetch can mislead all turned up in one day of reading. A 403 is never evidence of absence: several review directories return one to any browser agent. A 200 can serve the wrong record entirely. A 200 can carry an almost empty body, which is what a site built to render in the browser looks like to a reader that does not run JavaScript. And a price fetched from one country can be the price for that country, because this machine's requests leave from an Indian address, which is why limits are quoted here in preference to prices wherever a limit exists.