Ahrefs Brand Radar vs. Promptwatch (2026): Research Database or Working Tracker?
An independent test found Ahrefs Brand Radar undercounting ChatGPT mentions by ~97%. Here's what that means if you're choosing between it and a dedicated tracker.
Ahrefs Brand Radar has one of the best crawl indexes in SEO behind it, and for category-level research, is our AI presence growing, who dominates citations in our market, that scale is genuinely useful. The number every buyer should know before treating it as an operational tracker: an independent January 2026 test found it reporting 3 ChatGPT brand mentions for a site where manual checking verified 123. That's not a rounding error. It's worth understanding before it becomes the number in your Monday report.
Bing's AI Performance report covers Copilot citations. It is not a ChatGPT prompt log.
Snapshot comparison
| Ahrefs Brand Radar | Promptwatch | |
|---|---|---|
| Entry price | $199/mo per AI index (plus $129/mo+ Ahrefs base) | Free (Explore) or $95/mo (Essential), no base plan needed |
| Full engine bundle | $699/mo (all 6 indexes) | $95 to $245/mo (Essential/Professional, no per-engine indexes to buy) |
| Prompt source | Modeled from Google keyword data | Real prompts you define |
| Documented accuracy issue | ~97% undercount in independent Jan 2026 test | Real UI-based monitoring, not keyword-modeled |
| Data refresh | Roughly monthly snapshot cycles | Daily on paid plans |
| Claude / Grok / DeepSeek | Not in native indexes | Included on paid plans |
| Agency / white-label | Not offered; costly per-client scaling | Agency plans from $199/mo are self-serve; white-label is Enterprise/Custom only |
| Realistic full-coverage cost | $828 to $1,148+/mo | $95 to $245/mo |
The accuracy problem, in plain numbers
In a widely cited independent January 2026 test, Brand Radar reported 3 ChatGPT brand mentions for a site where manual checking verified 123, an undercount of roughly 97%. That gap traces to methodology: Brand Radar's prompts are modeled from Google keyword and People Also Ask data, not observed conversational queries, and its chatbot indexes refresh on roughly monthly snapshot cycles, so week-to-week movement is largely invisible. Treat any absolute number it reports as a floor, not a fact.
Promptwatch takes the opposite approach: you define the exact prompts, engines are monitored through real UI checks rather than keyword modeling, and paid plans refresh daily, so a number in the dashboard reflects an actual observed answer, with citation-level detail (page and domain) behind it, not a modeled estimate.
What Brand Radar is actually good for
If your question is category-level, how is our overall AI presence trending, who's dominating citations across our market, Brand Radar's 260 to 405M prompt corpus and pivot into Ahrefs' backlink and content data is a real advantage no prompt-based tracker offers. Any cited page beating you is one click from its full backlink profile in the same tool. For competitive research at that altitude, it earns its place in an Ahrefs-native team's toolkit.
What it's a poor fit for
Anything you'd call operational monitoring: knowing whether you were cited yesterday, catching a lost citation before a client asks about it, or reporting an exact mention count to leadership. The ~97% undercount, monthly refresh cycle, and keyword-modeled prompts make Brand Radar unsuitable as your only source of truth for AI visibility.
Pricing reality once you stack it
Brand Radar's free beta ended. You now need an Ahrefs base plan (from $129/mo), plus $199/mo per AI index or $699/mo for the all-six bundle, plus $50/mo per 2,500 custom prompt checks if you want your own prompts tracked. A realistic full configuration lands between $828 and $1,148+/mo, and there's no white-label or per-client structure, so a ten-client agency would be looking at $8,000+/mo. Promptwatch's paid plans, which start at $95/mo and cover the operational tracking job Brand Radar is weakest at, cost a fraction of that.
Who should pick which
Ahrefs loyalists doing quarterly competitive research, where directional category share matters more than exact counts, get real value from one Brand Radar index layered onto a plan they already pay for. Anyone who needs to know, with confidence, whether they were cited today, and prove it to a client or exec, needs a dedicated tracker. Running both isn't unreasonable: Brand Radar for market-level research, Promptwatch for the daily operational number you can actually trust.
FAQ
How bad is Ahrefs Brand Radar's accuracy, really?
Bad enough to change how you should use it. An independent January 2026 test found 3 reported ChatGPT mentions versus 123 manually verified, a roughly 97% undercount attributed to snapshot cycles and keyword-modeled prompts. Use it for trend direction, not precise counts.
Is Brand Radar included in a regular Ahrefs subscription?
No, the free beta ended. You need a base Ahrefs plan (from $129/mo) plus $199/mo per AI index or $699/mo for all six, plus $50/mo per 2,500 custom prompt checks.
Does Brand Radar track Claude or Grok?
No, its native indexes don't include Claude, Grok, or Meta AI. Promptwatch covers Claude, Grok, and DeepSeek alongside ChatGPT, Gemini, Perplexity, and Copilot on its paid plans, starting at $95/mo.
What's a more accurate alternative for daily tracking?
Promptwatch checks real, user-defined prompts daily across ChatGPT, Gemini, Claude, Perplexity, Copilot, and more, with page- and domain-level citation analytics behind every measurement, starting at $95/mo, well under even a single Brand Radar index.