Best advertising networks compared, ranked on the reach and the minimum each one publishes

"Advertising network" means two opposite things. If you want to buy traffic you are asking one question. If you want to sell space on your own site you are asking a completely different one, and most articles answer the wrong one.

First, which side are you on

If you are buying, a network is a way to reach an audience across many sites with one account. You care about reach, targeting, minimum spend and whether the inventory is any good.

If you are selling, a network is a way to monetise your own traffic. You care about the revenue share, the payment threshold, the content rules and whether your site qualifies at all.

This page is mostly about the buy side, because the pooled searches behind it read that way, and the sell side is covered at the end.

The four kinds of network on the buy side

One, the search and platform networks. Google and Microsoft. These are not really networks in the old sense, they are the demand itself, and they are where intent lives. We read business.google.com/us/google-ads/ on 21 October 2026 and the campaign types it names are Performance Max, Search, Shopping, Video Reach, Video View, Demand Gen and App. It publishes no minimum spend: its only commitment language is that "New advertisers will receive an ad credit after meeting the minimum spend requirement for the selected offer", with the requirement not stated and the offer amounts rendering as unfilled template placeholders.

Two, the native and content recommendation networks. Taboola and Outbrain are the two names in this category. On scale, Taboola publishes a real number. Its advertiser page, read at taboola.com/advertise on 21 October 2026, describes its product Realize as "Performance AI with a global network of vetted publishers, reaching 600M daily active users". Note what it does not publish: no count of publishers, despite a section headed "Our Network of Publishers & Media Properties" with logos under it, and no minimum spend anywhere on the page. The only calls to action are "Try Realize" buttons.

We tried to read the equivalent Outbrain page the same day. outbrain.com/advertise/ returned HTTP 404. We are reporting that rather than describing the product from memory, because a 404 means we could not verify anything on that date and because this category has been through mergers and renames. Find the current page before planning a buy on it.

Three, the retail media networks. Amazon and the large retailers. Closest to the point of purchase and the fastest growing part of this market. One live warning here, which is the general lesson of this page. A product in this space can be renamed under you. Amazon's own advertising site publishes that Amazon DSP has evolved into Amazon Ads Agent, so any comparison built on Amazon DSP as a current product name is describing something that has moved. Check the name renders on the vendor's site before you build a plan around it.

Four, the programmatic exchanges and demand side platforms. Where most display inventory actually trades. These are bought through an agency or a seat rather than signed up for, and minimum commitments are real and negotiated rather than published. If a network will not tell you a minimum until a call, that is the tier you are in.

How to rank them, since reach is not the constraint

Here is a stated criterion that is checkable today. Rank by what each network publishes on its own page about reach and about minimum spend, because those are the two facts that decide whether you can test it at all.

Run that criterion and something becomes obvious. Taboola publishes a reach figure and no minimum. Google publishes neither a reach figure in these terms nor a minimum. The programmatic tier publishes nothing. So on published transparency about the money, the native networks lead, and the exchanges are last. That is not a quality ranking, it is a shoppability ranking, and for anybody without an agency it is the more useful of the two.

And the practical consequence: with 600 million daily active users available and no minimum spend, reach is not what is stopping your campaign. The constraint is whether you have something worth sending those people to. A network buy without a strong destination is paying twice for one failure.

The surface with no network at all

Every network above exists because somebody is selling inventory. That is what makes advertising legible: there is a slot, a price and an auction.

When a buyer asks ChatGPT, Gemini, Perplexity, Claude or Google AI Overviews who to buy from, no inventory exists. The assistant names two or three businesses. There is no network, no slot, no bid and no account to open. You cannot advertise your way into that answer and nobody can sell you a position in it, which is also why there is no vendor in the four categories above who can help you with it.

AI Knows Us measures it, which is a different thing from buying it, and it is the only thing we sell. We are not an ad network, we place nothing and we hold no inventory. We put the buying questions your market asks to all five surfaces on a schedule and report which names come back.

On the same published criterion this page applies to the networks, here is ours. Our ladder at aiknowsus.com/llms.txt, read 21 October 2026, publishes the allowance beside the price: Growth at $299 a month, 100 buyer questions watched, 1,600 credits, all five engines. Outbound at $1,299 publishes 30 questions and four engines rather than five, with no Claude, which is a limit we would rather print than let a buyer find later. And SEO Start at $149 publishes 0 questions, 0 credits and 0 engines, so it reads none of this.

If you are on the sell side instead

If what you wanted was to monetise your own traffic, the question that decides it is content quality rather than network choice, because the large networks will take almost any qualifying site and then police it. What triggers a low value content flag and the order to fix it is at AdSense low value content, what triggers the flag and the order to fix it.

If the model you are actually looking at is performance based rather than impression based, the affiliate side of this market has different economics and two of its largest names changed hands this year. That is at best affiliate networks compared, and the two that changed hands this year. We link to it deliberately. When we measured inbound links across 2,286 stored page bodies on 21 October 2026, no other page on this site links to that one, and 939 of our 2,200 live pages were in the same position, 42.7 percent, an upper bound.