Semrush AI Visibility Toolkit vs Ahrefs Brand Radar
This is really a question about which SEO suite you already pay for. Both Semrush and Ahrefs bolted AI visibility onto an established platform, and both are priced as extensions rather than standalone products. The difference that matters is how the money stacks: Semrush charges a flat per-domain fee with tight prompt limits, while Ahrefs charges per AI index on top of a base subscription.
Semrush AI Visibility Toolkit
AI prompt tracking, competitor research, and an AI search site audit bundled into the Semrush suite at $99/mo per domain.
Strengths:
- Cheapest big-suite entry point at $99/mo per domain
- Familiar Semrush UX and shared data with your SEO work
- Included in Semrush One bundles from $199/mo
Weaknesses:
- Base plan covers only 25 tracked prompts
- Extra prompts run roughly $60/mo per 50
- Each additional domain or seat is another $99/mo
Ahrefs Brand Radar
AI visibility indexes layered onto the Ahrefs platform, priced as add-ons on top of an Ahrefs subscription.
Strengths:
- Ties AI visibility to Ahrefs keyword and backlink data
- Broad index coverage across major AI surfaces
- Strong fit if Ahrefs is already your source of truth
Weaknesses:
- Costs stack: Ahrefs from $129/mo plus $199/mo per AI index, or $699/mo for the bundle
- Independent 2026 reviews put typical all-in cost at $828–1,148/mo
- No Claude coverage per those same reviews
Verdict
If you already pay for one of these suites, the answer is almost always the one you already have — the integration with your existing keyword and site data is the whole point, and paying for a second suite to get its AI module rarely pencils out. If you are genuinely choosing from scratch, Semrush is materially cheaper to start ($99/mo per domain versus a realistic $828+/mo all-in for Brand Radar per independent 2026 reviews), and Brand Radar only justifies its stacking when Ahrefs is already central to your backlink and keyword workflow. Worth saying plainly: neither is the cheapest route to AI visibility data — dedicated tools cost a fraction of either.
Both of these are AI visibility reporting inside an SEO suite, which is a reasonable thing to want. A different need — knowing exactly what AI says to a buyer comparing you against a named competitor — is what Perciva is built for: buyer-intent prompt monitoring, verbatim answer capture, claim extraction, and competitor displacement alerts, from €49/mo. It has none of the keyword or backlink data either suite gives you.
Frequently Asked Questions
Which is cheaper?
Semrush, substantially. The AI Visibility Toolkit is $99/mo per domain for 25 tracked prompts, or bundled in Semrush One from $199/mo. Ahrefs Brand Radar requires an Ahrefs plan from $129/mo plus $199/mo per AI index ($699/mo for the full bundle) — independent 2026 reviews put realistic all-in costs at $828–1,148/mo.
Do they track the same AI engines?
There is broad overlap on the major surfaces, but 2026 reviews flag Claude (and Grok) as gaps in Brand Radar's index coverage. Both suites update coverage often, so confirm the current list before you commit budget.
Is 25 prompts enough on the Semrush plan?
For a first look, possibly. For real buyer coverage — comparison, pricing, integration, and security questions across several engines — 25 is thin, and expanding is where Semrush's costs start stacking at roughly $60/mo per 50 additional prompts.