ahrefs brand radar vs centium
Ahrefs meters AI prompt tracking as checks: one prompt, one platform, one location. $50 buys 2,500 a month and $100 buys 7,000, after which you pay overage. Centium is $99 for a fixed reading: 120 prompts across six AI models, 720 responses, nothing metered.
Updated August 10, 2026 · Custom prompt packages, monthly rates
| Centium All plans | Ahrefs Basic package | Ahrefs Growth package | |
|---|---|---|---|
| Cadence and price | Monthly $99Bi-Weekly $149Weekly $199 | Daily $50 | Daily $100 |
| AI models |       6 models | Choose 1 | Choose 2 |
| Prompts per refresh | 120 | 80 | 100 |
| AI responses per refresh | 720 | 80 | 200 |
| Seats | Unlimited | 1 | 1 |
| Competitors | All mentioned, automatically | Share of voice | Share of voice |
| Brand sentiment | Yes | No | No |
| Position in response | Yes | No | No |
| Citation and source tracking | Yes | Yes | Yes |
| Query fan-out | Yes | Yes | Yes |
| Actions and recommendations | 10 strategies per report | AI Content Helper | AI Content Helper |
| Prompt research database | No | Separate purchase | Separate purchase |
| Export | CSV and XLSX | Yes | Yes |
Prompts and responses per refresh follow Ahrefs’ own sizing of each package: Basic as “80 prompts daily on 1 platform” and Growth as “100 prompts daily on 2 platforms.” The five trackable surfaces are Google AI Overviews and AI Mode counted as one, ChatGPT, Perplexity, Gemini, and Microsoft Copilot. Claude is not available at any price, and Grok appears in Ahrefs’ research index rather than as a platform you can track.
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 Ahrefs Brand Radar. Figures are drawn from Ahrefs Brand Radar’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.
brand radar pricing
Ahrefs sells two separate things. Its research database of 475M+ prompts is priced by platform, at $199 each or $699 a month for all five. Tracking prompts you write yourself is a custom prompt package: Basic at $50 for 2,500 checks a month, Growth at $100 for 7,000, Scale at $250 for 25,000, with overage at $0.020, $0.015, and $0.010 a check.
The packages are what this page compares, because a prompt you wrote about your own category is the thing every other platform measures. Ahrefs’ main SEO plans also bundle tracked prompts, but only 5, 10, or 20 of them at $129, $249, and $449 a month.
Centium is $99 a month billed annually for 120 prompts across six models, 720 responses per refresh, unlimited seats, and export. The ranked comparison of eight AI visibility platforms puts that beside the rest of the field, and Centium’s pricing page has the three cadences.
one platform is one opinion
Ahrefs sizes Basic at 80 prompts on a single platform. That is 80 AI responses from one model, against 720 from six. AI models are non-deterministic and they disagree with each other, so a single engine is not a smaller version of the market. It is one opinion.
Growth doubles the platforms and gets you to 200. Better, and still a quarter of what a Centium reading collects, with the two models most likely to differ from ChatGPT missing from the menu entirely.
What a Centium plan carries does not change with the price: query fan-out for the sub-questions behind an answer, AI crawler access for whether the models can reach you at all, and the sources each one cited. Cadence is the only variable. See how Centium measures visibility.
- You want measurement depth: 720 AI responses in every reading, against 80 on Basic and 200 on Growth.
- You are fine slowing down your cadence, so you have time between data refreshes to act on your strategy.
- Your buyers use Claude or Grok. Neither is a trackable platform on Brand Radar at any price.
- You want a fixed monthly cost with no chance of overages.
- More than one person needs the dashboard, and you want export and archived history included.
- You optimize daily and want the most raw checks per dollar. At $100 for 7,000, Ahrefs sells more capacity than Centium does.
- You want prompt demand data. Ahrefs’ 475M-prompt database is real research that Centium does not sell.
- You already run your SEO in Ahrefs and want AI data beside your backlinks and keywords.
- One or two platforms genuinely cover your category, and neither is Claude nor Grok.
centium or brand radar.
Ahrefs meters AI prompt tracking as checks. One check is one prompt on one platform in one location, and the $100 Growth package covers 7,000 a month, which Ahrefs sizes as 100 prompts daily on 2 platforms. Centium is $99 a month for a fixed reading: 120 prompts across six AI models, 720 AI responses, with no meter and no overage.
There are two things to buy. Ahrefs’ research database of 475M+ prompts is $199 per platform, or $699 a month for all five. Tracking prompts you write yourself is a custom prompt package: Basic is $50 a month for 2,500 checks, Growth is $100 for 7,000, and Scale is $250 for 25,000. Overage runs $0.020, $0.015, and $0.010 per check. Ahrefs’ main SEO plans also bundle 5, 10, or 20 tracked prompts at $129, $249, and $449.
Ahrefs defines it as tracking one prompt on one platform in one location. Running 100 prompts against two platforms once uses 200 checks, so the 7,000 in the Growth package covers roughly 35 such readings, or about 100 prompts daily on 2 platforms across a month. Going wider spends the budget faster and bills overage at the end of the month.
Five surfaces: Google AI Overviews and AI Mode, ChatGPT, Perplexity, Gemini, and Microsoft Copilot. Claude is not available at any price. Grok appears in Ahrefs’ research index but is not a platform you can track your own prompts against. Centium runs ChatGPT, Claude, Gemini, Google AI Mode, Perplexity, and Grok on every plan.
The Basic package is, at $50 a month against $99. What it covers is narrower: Ahrefs sizes it as 80 prompts on a single platform, which is 80 AI responses per reading against Centium’s 720 across six models. Growth at $100 is roughly the same price as Centium and covers 100 prompts on two platforms, or 200 responses.
Centium, if you want a complete reading rather than a budget to spend. Every plan includes six AI models on 120 prompts, 720 AI responses, unlimited seats, and export, with no per-check billing and no engine sold separately. If you want prompt demand data, Ahrefs has a 475M-prompt database that Centium does not sell.
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