semrush ai visibility vs centium
Both cost $99 a month. Semrush spends it on a toolkit inside an SEO suite: 25 prompts across four AI models, beside your rank tracking and site audits. Centium spends it on the measurement itself: 120 prompts across six AI models, 720 AI responses in one complete reading, with unlimited seats.
Updated August 10, 2026 · Standalone AI plans, annual rates
| Centium All plans | Semrush AI Visibility Toolkit | |
|---|---|---|
| Cadence and price | Monthly $99Bi-Weekly $149Weekly $199 | Daily $99 |
| AI models |       6 models | 4 models |
| Prompts per refresh | 120 | 25 |
| AI responses per refresh | 720 | 100 |
| Seats | Unlimited | Extra users from $45 |
| Competitors | All mentioned | Share of voice |
| Citation and source tracking | Yes | Yes |
| Brand sentiment | Yes | Yes |
| Position in response | Yes | Citations only |
| AI crawler access and training data | Common Crawl indexing | Site audit |
| Query fan-out | Yes | No |
| Prompt volume data | No | Yes |
| Archive and history | Yes | Yes |
| Export | CSV and XLSX | PDF and CSV |
Annual rates shown. Semrush is priced per domain, and additional users start at $45 per month. Centium month to month is $119.
All product names, logos and brands are the property of their respective owners and are used here only to identify the products being compared. Centium is not affiliated with, endorsed by, or sponsored by Semrush AI Visibility. Figures are drawn from Semrush AI Visibility’s publicly published pricing and documentation as of August 10, 2026, and plans change often, so check the provider’s own page before relying on a number.
semrush pricing
The Semrush AI Visibility Toolkit is $99 per month per domain, billed annually. That covers 25 custom prompts with daily AI rankings, one domain for brand performance, and mentions from ChatGPT, Google AI, Gemini, and Perplexity. Additional users start at $45 per month, and Base and Pro reports are $10 and $20 per month on top. Enterprise is custom.
Semrush also bundles AI prompt tracking into its larger SEO plans, at 50 prompts on Starter and up to 200 on Advanced, but those carry the full suite price. The standalone toolkit is the plan priced against Centium, so it is the one compared here.
Centium is $99 a month billed annually for 120 prompts across six models, 720 responses per refresh, unlimited seats, and export. See eight leading AI visibility platforms ranked or Centium’s own pricing.
a module or the whole product
Semrush is one of the best SEO suites there is, and the AI Visibility Toolkit is a capable addition to it. But it is an addition. It sits alongside rank tracking, backlink audits, and keyword research, and it is sized like a feature rather than a product: 25 prompts, four models, 100 AI responses per refresh.
Centium spends the same $99 on nothing but the measurement. 120 prompts, six models, 720 responses. AI models are non-deterministic, so the same question asked twice can come back differently, and a wider sample is the only thing that separates a real position from noise. At 25 prompts a single unlucky answer moves the number.
Where Semrush is genuinely stronger is prompt research. It treats prompts the way it treats keywords, reporting AI volume, topic difficulty, and intent, which is demand data Centium does not sell. Centium answers the other question: given the category you compete in, where do you actually stand across every model, and what should you build next.
Every Centium plan includes the full platform, including query fan-out, which shows the sub-questions a model asks itself before it answers. Seats are unlimited, so the whole team and the agency can read the same dashboard without another line on the invoice.
what 25 prompts miss
AI models are non-deterministic, so the same question can come back differently each time you ask it. At 25 prompts, one answer is four percent of your whole reading. At 120, it is under one percent.
Daily rankings do not fix that. Running the same 25 prompts every day sharpens those 25 questions and leaves the rest unasked. Sell three product lines to two kinds of buyer and 25 prompts is four per segment.
Centium runs 120 prompts across six models, 720 AI responses per reading against 100. That covers a category and its segments in one pass. See how Centium measures visibility.
- You want measurement depth. Centium queries six models with 120 prompts each, and reports on a larger dataset from 720 AI responses.
- Your buyers use Claude or Grok, neither of which the Semrush toolkit covers.
- More than one person needs the dashboard, without paying $45 for each of them.
- You want a platform built for AI visibility rather than a toolkit added to an SEO suite.
- You have several product lines or buyer segments to cover, and 25 prompts spreads too thin across them.
- You want the sources behind the answer and a plan for what to publish next, not a score to watch.
- You already run your SEO in Semrush and want AI data in the same place as your rank tracking.
- You want prompt research: AI volume, topic difficulty, and intent, the way keyword research works.
- Daily rankings matter more to you than how many prompts and models produced them.
- Your category is well covered by ChatGPT, Google AI, Gemini, and Perplexity alone.
- Site audits and technical SEO fixes need to live beside your AI reporting.
centium or semrush ai visibility.
Semrush sells AI visibility as one toolkit inside an SEO suite. Centium is an AI visibility platform and nothing else. At the same $99 a month, Semrush tracks 25 prompts across four AI models and Centium tracks 120 across six, which is 100 AI responses per refresh against 720.
The Base plan is $99 per month per domain, billed annually, and includes 25 tracked prompts with daily AI rankings on one domain. Additional users start at $45 per month. Semrush also sells Base and Pro reports as $10 and $20 per month add-ons, and an Enterprise tier at custom pricing.
Semrush covers four: ChatGPT, Google AI, Gemini, and Perplexity. Centium covers six on every plan: ChatGPT, Claude, Gemini, Google AI Mode, Perplexity, and Grok. Neither Claude nor Grok appears in the Semrush toolkit, so a category that gets recommended in those models is invisible there.
It is a reasonable fit if you already run your SEO in Semrush and want AI visibility beside it, and its prompt research is genuinely useful: it reports AI volume, topic difficulty, and intent the way keyword research does. What it buys you is breadth of workflow rather than depth of measurement, at 25 prompts and four models.
Not for most businesses. AI models are non-deterministic, so one answer at 25 prompts is four percent of your whole reading, and daily rankings sharpen those 25 questions without adding any. Coverage is the harder limit: three product lines sold to two kinds of buyer is six segments, which leaves four prompts each. Centium runs 120 prompts across six AI models, 720 AI responses per reading against the Semrush toolkit’s 100.
Centium, if the constraint is measurement depth. For the same $99 a month it runs 120 prompts across six AI models, 720 AI responses per refresh, with unlimited seats rather than $45 per extra user. If the constraint is having AI data inside the same suite as your rank tracking and site audits, Semrush remains the more convenient option.
Semrush prices the AI Visibility Toolkit separately at $99 per month per domain, and its larger Starter, Pro+, and Advanced SEO plans bundle AI prompt tracking at higher volumes. Centium has no base plan or suite to buy into: every plan includes the whole platform.
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