Serpstat LLM Brand Monitor Review 2026: The Same Product Publishes Three Different Model Counts

Serpstat’s LLM Brand Monitor page says “100+ AI models monitored across platforms” at the top. Scroll to its own FAQ and it says “we cover 140+ models”. Go to the Serpstat pricing page and the same product tracks “ChatGPT, Claude, Gemini and over 140 other AI models”, which is a third number again.

Four AI systems are ever named. The rest of the claim is a number that changes depending on which paragraph you are reading.

Disclosure: EchoWi sells AI visibility measurement, so Serpstat is a competitor in the part of its business this review covers. Every figure below was read from serpstat.com/page/llm-brand-monitor/ and serpstat.com/page/pricing-plans/ on 7 August 2026 and is recorded in our verified catalogue with that date.

The short version

1. Three different coverage counts, two of them on the same page as each other.
2. Four engines are named anywhere: ChatGPT, Claude, Gemini and Perplexity.
3. There is a real free tier, 10 checks a month, which almost nobody in this market offers.
4. Pro is $39 a month, marked down from $99 with a “limited-time” label.
5. The page sells checks on one plan and credits on another and never says whether they are the same thing, which decides whether Pro is cheaper or twice the price of buying credits.

What it costs, verified

Read from serpstat.com/page/llm-brand-monitor/ on 7 August 2026.

The discount claim is one of the few numbers here that checks out exactly. $39 against $99 is 60.6% off, so “save 60%” is honest rounding rather than marketing arithmetic.

The Serpstat SEO suite is a separate product on a separate page, at $50, $100, $169 and $410 a month. Its plan comparison does not list the LLM Brand Monitor as an included feature at any tier. Team and Team x2 do include a “ChatGPT and Claude Integration (MCP)”, which is a different thing: that is Serpstat data going into an assistant, not an assistant being measured.

The two units that are never converted

Here is the whole problem in two rows of the same pricing block.

Pro: 200 checks per month. Pay As You Go: starts from $25 for 100 credits.

Nowhere does the page say that a check is a credit, or how many credits a check consumes, or the reverse. They are simply two different words for the thing you are buying, sold on two adjacent plans.

That is not pedantry, because the two readings give opposite advice:

$39 ÷ 200 = $0.195 $99 ÷ 200 = $0.495 $25 ÷ 100 = $0.250

At $39, Pro is 22% cheaper per unit than buying credits. At the list price of $99, it is 98% more expensive. So the answer to the only question a buyer has, subscribe or buy credits, depends on both an unstated equivalence and a promotion that is labelled as temporary.

We have seen the undefined unit before in this market. Rankability sells four tiers that differ only by credits and never says what a credit buys. Serpstat’s version is one step further along: it does not define either of its two units, and it does not relate them to each other.

To be fair to Serpstat, the free tier softens this considerably. You can spend 10 checks and find out empirically what a check is, at no cost, which is more than most of this category allows.

One hundred, one hundred and forty, or four

This is the finding that made the review worth writing, and it is worth laying out precisely, because each statement is defensible on its own and they cannot all describe the same product.

In the hero: “100+ AI models monitored across platforms”.

In the FAQ, on the same page: “we cover 140+ models including ChatGPT, Claude, Gemini, and Perplexity, and expand coverage as new models appear”.

On the Serpstat pricing page: the monitor tracks how “ChatGPT, Claude, Gemini and over 140 other AI models talk about your brand”.

Read them carefully and the third is not even a restatement of the second. “140+ models including ChatGPT, Claude, Gemini and Perplexity” puts the four inside the total. “ChatGPT, Claude, Gemini and over 140 other models” puts them outside it, which makes the total 143 or more. And the hero, which is the number most readers will take away, is 40 short of both.

The feature description names four: “Monitor brand mentions across ChatGPT, Claude, Gemini, Perplexity & more”. No list of the remaining 96, or 136, or 139 is published anywhere we could find.

Now put that against the market. Across the tools in our catalogue that publish a coverage number at all, the widest you can actually buy is ten, on Rankscale at $20 a month and Qwairy at €79. A claim of 140 is fourteen times the best verified figure in the category.

There is an innocent reading and it is worth stating. “Model” and “engine” are not synonyms: ChatGPT alone runs several models, and a vendor counting model versions rather than consumer assistants could reach a three-figure number honestly. If that is what Serpstat means, then its number is not comparable with anybody else’s and the page never says so. Either way, the buyer cannot use it.

What we are objecting to is not the size of the number. It is that the same product publishes three of them.

What the same $39 buys elsewhere

Thirty-nine dollars is a real price point in this market, which makes it a fair test.

Rank Prompt is the sharpest comparison because the price is identical. It publishes that one credit covers a prompt across its four standard engines and that two of its engines cost one extra credit each, so a buyer can compute the monthly bill before paying. Serpstat, at the same money, publishes a unit with no definition and a coverage figure with three values.

What Serpstat has that none of those three have is a free tier that does real work, and a credit pack that does not expire. Both are genuinely unusual, and both are the right answer for a certain buyer.

Where Serpstat is the right choice

You already pay for Serpstat. If the suite is already in your stack, adding brand monitoring inside a tool your team knows beats a second login and a second invoice. This is the same argument that makes Semrush’s toolkit and Ahrefs Brand Radar sensible purchases for their existing customers, and it is a good argument.

You want to find out whether any of this matters, for nothing. Ten checks a month at $0 is one of 3 free tiers in our verified catalogue. For a brand that has never once looked at how an assistant describes it, that is a better first step than a $99 subscription, and we would rather send you there than sell you a plan you are not ready for.

Your usage is lumpy. Credits that do not expire suit an agency that runs a burst of checks during a pitch and nothing for two months. Most of this market bills monthly and resets your allowance whether you used it or not.

You are watching four assistants and you know it. ChatGPT, Claude, Gemini and Perplexity are the four that are actually named, and for a large number of brands that is a perfectly reasonable set to watch. The complaint in this review is about what the page claims, not about whether four is enough.

Where Serpstat is the wrong choice

You need to know what you are measured on. Three coverage numbers and four named systems is not a specification. If your reporting has to state which surfaces were checked, you cannot source that from this page.

You need to forecast the bill. Checks and credits are sold side by side and never converted. Any procurement process that requires unit economics stops here.

You are buying on the promotional price. $39 is explicitly labelled limited-time. Budget against $99 and treat the discount as a bonus, because the page tells you it is temporary and does not say when it ends.

You need a deep engine list on a small budget. Ten named engines cost $20 at Rankscale. Four named cost $39 here, or $99 when the offer closes.

What we could not verify

• What a check is, and what a credit is. Neither is defined, and the relationship between them is not stated. This is the central finding rather than a gap in our research, but it is still something we could not check.
• Which models make up 100+, or 140+, or 143+. No list is published on either page we read.
• Whether the free and Pro plans require a Serpstat suite subscription. The monitor page prices itself standalone and the suite plan table does not mention the monitor. We could not find a statement either way, so we have recorded it as a standalone product and flagged the uncertainty here.
• When the limited-time offer ends. Not stated.
• The refresh cadence on Free and Pay As You Go. Only Pro mentions a schedule, “weekly automated scans”.
• How mentions are attributed to a brand. Every tool in this category faces the entity disambiguation problem and almost none publish how they resolve it. Serpstat does not either.

Common Questions About Serpstat LLM Brand Monitor

How much does Serpstat LLM Brand Monitor cost?

There is a free plan at $0 for 10 checks a month on 2 projects. Pro is published as “$99 $39/mo” with a “Limited-time offer, save 60%” label, for 200 checks a month, unlimited projects and weekly automated scans. Pay As You Go “starts from $25 for 100 credits” and the credits do not expire. Read from serpstat.com on 7 August 2026.

How many AI models does Serpstat track?

The product states three different figures. Its hero says “100+ AI models monitored across platforms”, its own FAQ further down the same page says “we cover 140+ models”, and the Serpstat pricing page says it tracks “ChatGPT, Claude, Gemini and over 140 other AI models”, which reads as 143 or more. Four are ever named: ChatGPT, Claude, Gemini and Perplexity.

Is a Serpstat check the same as a credit?

The page does not say. Pro is sold in checks and Pay As You Go is sold in credits, with no conversion published. If they are equivalent, Pro at $39 works out at $0.195 a unit against $0.250 for credits, so the subscription is 22% cheaper. At the list price of $99 the same maths makes it 98% more expensive than credits.

Does Serpstat have a free AI visibility tool?

Yes, 10 checks a month on 2 projects at no cost. It is one of only 3 free tiers among the eighty tools you can buy, which makes it a genuinely cheap way to see what this class of product does before spending anything.

Is LLM Brand Monitor included in a Serpstat subscription?

We could not establish that from the published pages. The monitor has its own pricing block with its own free, subscription and credit options, and the main Serpstat plan comparison does not list it as a feature at any tier. Team and Team x2 include a ChatGPT and Claude MCP integration, which is Serpstat data inside an assistant rather than an assistant being measured.

How does Serpstat compare with other AI visibility tools?

It is priced at the low end and its named coverage is mid-table at four engines, against ten for the widest plan anyone in our catalogue sells. Its distinguishing features are the free tier and the non-expiring credits. Its weakness is that neither the unit nor the coverage figure is stated once and stated clearly. Our verified catalogue carries every tool’s price and engine count read from its own page on a stated date, including the ones that decline to give a number.