AI-visibility measurement is a brand-new vendor category: most tools in this roundup launched between 2023 and 2025. The space is already crowded with vendor-published "best of" lists that rank their own product first, the gap this roundup closes. ChatGPT has surpassed 900 million weekly active users as of late February 2026, more than double the roughly 400 million reported a year earlier. Google's AI Overviews now appear on more than 43 percent of U.S. searches as of May 2026. A team with no visibility into that channel cannot tell whether an AI answer names them, names a competitor, or names nobody. That surface reaches more people weekly than most brands' entire paid-media footprint does. This roundup checked ten AI visibility tools directly against their own current sites in August 2026, ranked them on coverage, pricing transparency, and differentiation, and marked pricing "not published" everywhere a vendor genuinely keeps it private rather than guessing.
Who This Guide Is For (and Not For)
This guide is for:
- Marketing directors, SEO leads, and content teams who already track organic rankings and want the same visibility into ChatGPT, Perplexity, and Google AI Overviews
- Agencies managing AI-search visibility reporting across multiple client brands
- Teams evaluating a first AI-visibility platform and needing a shortlist mapped to budget and AI-surface priorities
- Teams already using Ahrefs or Semrush who want to know whether the built-in AI-visibility add-on covers enough ground
This guide is not for:
- Anyone looking for a way to manipulate what a specific AI model says about a brand; every tool here measures visibility, none guarantees a specific answer
- Buyers expecting one free tool to replace daily monitoring; free tiers exist but cap volume sharply
- Teams that only need traditional keyword-rank tracking, a different, older tool category not covered here
- Buyers wanting a done-for-you GEO content or PR service instead of software; every tool profiled here is a measurement platform, not an agency
Quick Summary: Best AI Visibility Tools in 2026
How We Evaluated
Every tool here asks ChatGPT or Google's Gemini a question on a schedule and counts how often a brand comes back in the answer. That part is table stakes. What separates the ten below is everything wrapped around the counting, so that is what we scored them on.
Coverage that matches where buyers actually ask. Eight engines beats four, but only when the extra four are engines a brand's customers use. A tool that tracks Grok and DeepSeek while skipping Claude is not broader, just pointed somewhere else. Read the surface list against a real audience, not as a scoreboard.
Pricing you can see without booking a call. A vendor who will not print a number before a demo is telling you something about the demo. Anything that publishes exact tier pricing ranks above an otherwise equal competitor that hides it, and the one tool here that keeps its rates private says so in its profile instead of carrying a guessed figure.
How much of the product is reachable at the published price. Several vendors lead with their most interesting capability, then park it in a custom-quote Enterprise tier. A feature nobody can buy without a procurement cycle counts for less than a smaller feature sitting on a $37 plan.
What happens after the dashboard shows a gap. Some tools stop at the chart. Others hand over the brief, the draft, or the publisher contact. Neither approach is wrong, but a two-person marketing team and a forty-person content org need opposite answers, so each profile says which one it is.
A differentiator that is genuinely different. Ten dashboards reporting share of voice is not a category, it is a commodity. Every tool ranked below does one thing the other nine do not, and anything whose difference we could not state in a sentence stayed off the list.
Every dollar figure below comes from the vendor's own pricing page rather than a comparison site.
A few tools came close without making the ten, but none gave us a reason to displace anything above them. No tool paid for their placement in this list.
The 10 Best AI Visibility Tools in 2026
1. Wellows
What it is: Wellows is an AI-visibility platform that measures how often ChatGPT, Gemini, and three other surfaces pull a brand into an answer, then supplies the content and outreach workflow needed to act on what it finds.
Best for: Closing citation gaps with content and outreach
AI surfaces tracked: ChatGPT, Google AI Overviews, Google AI Mode, Gemini, Perplexity (5; engine access is tiered, with the Lite plan limited to ChatGPT and the Essential plan to ChatGPT plus AI Overviews)
Core capabilities: An AI Visibility Score built from explicit citations (a direct link or named source) and implicit citations (a brand named without a link), unlimited citation checks on every plan, prompt-level monitoring that flags which queries name competitors, content scanning for citation blockers, AI-optimized content generation with readability and originality scoring, verified outreach contacts with templates, brand sentiment analysis, competitor tracking on ten rivals, daily monitoring, and a Google Search Console integration.
Pricing: Lite $37/domain/month (1 engine, 40 prompts), Essential $97/domain/month (2 engines, 100 prompts), Starter $297/domain/month (all 5 engines, 400 prompts), Pro $497/domain/month (all 5 engines, 1,000 prompts). Every plan includes a 7-day free trial with no charge during the trial; there is no permanently free tier.
Wellows counts two kinds of citation, and the second one is why it is worth a look. When a model cites a third-party page, Wellows scrapes that page and checks whether the brand appears inside it, catching visibility a plain mention count misses: a review or listicle the model quotes without ever naming the brand in its answer. From there the tool keeps going into execution, generating the article and surfacing the publisher contact needed to earn a citation rather than stopping at a dashboard. Pricing is per domain and tiered by engine, though, so an agency running five client domains multiplies the monthly figure five times, and full five-engine coverage does not arrive until the $297 Starter tier.
Verdict: Wellows is the best AI visibility tool for a team that wants the fix, not just the finding. It scores implicit citations alongside explicit ones, catching the pages an AI model quotes without naming the brand, then supplies the draft and the outreach contact to act on the gap.
2. Profound
What it is: Profound is an enterprise AI-visibility platform that pairs prompt-level demand research with brand-mention tracking across eight major AI answer engines.
Best for: Enterprise prompt-demand research and tracking
AI surfaces tracked: ChatGPT, Perplexity, Claude, Gemini, Grok, Microsoft Copilot, DeepSeek, Google AI Overviews (8)
Core capabilities: Prompt Volumes (AI-era demand research from a real consumer prompt panel), Answer Engine Insights (brand representation monitoring), Agent Analytics (bot-crawl tracking), autonomous content and FAQ Agents, and Aim, a weekly task-prioritization feature.
Pricing: Starter $99/month, Growth $399/month (billed yearly, two months free), Enterprise custom.
Profound's Prompt Volumes feature is the differentiator: instead of only measuring how a brand shows up in prompts someone already wrote, it estimates prompt-level demand the way a keyword tool estimates search volume, built from a panel of real consumer prompts rather than a synthetic list. That reframes the category from tracking mentions to finding what to target before competitors do, a different job than most of the other nine tools here attempt. Its Agent Analytics layer adds a second, less-discussed capability: tracking how AI crawlers and agents hit a site, not just how the resulting answer describes it. The trade-off is price and audience: Profound fits a team with a dedicated AI-search budget line, not a solo operator testing the category.
Verdict: Profound is the best AI visibility tool for enterprise teams that want prompt-level demand research alongside mention tracking. Its Prompt Volumes feature estimates what people are actually asking AI models before a brand shows up in the answer, a research layer none of the other nine tools in this roundup replicate.
3. Ahrefs Brand Radar
What it is: Ahrefs Brand Radar is an AI-visibility module built into Ahrefs' SEO suite, tracking brand mentions across six AI platforms using a prompt index built from real search data.
Best for: SEO teams already inside Ahrefs
AI surfaces tracked: Google AI Overviews and AI Mode, ChatGPT, Microsoft Copilot, Gemini, Perplexity, Grok (6; no native Claude coverage)
Core capabilities: Prompt tracking against a real-search-derived index, competitive benchmarking, citation analysis, a free beta tracker for YouTube, TikTok, and Reddit mentions, and custom prompt monitoring.
Pricing: Select platforms $398/month, All platforms $699/month (includes 2,500 custom prompt checks per month).
The index is the real differentiator here. Where several competitors in this roundup build or license a fixed prompt list, Ahrefs draws its prompt set from actual search queries its crawler already indexes at scale. That matters most for a team that already lives inside Ahrefs, since Brand Radar sits in the same login rather than requiring a second tool. Ahrefs is one of three tools here with no native Claude coverage, the one surface it misses.
Verdict: Ahrefs Brand Radar is the best AI visibility tool for teams already running Ahrefs who want AI-search tracking layered onto a prompt index built from real search volume. The absence of native Claude tracking is the one gap worth knowing before switching in from a smaller, Claude-inclusive competitor.
4. AthenaHQ
What it is: AthenaHQ is an AI-visibility platform that tracks brand mentions, share of voice, and answer accuracy across eight AI surfaces, including a genuine free tier.
Best for: Startups wanting a genuine free tier
AI surfaces tracked: ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Claude, Copilot, Grok (8)
Core capabilities: Prompt-level tracking, share of voice and competitive benchmarking, citation and source analysis, content-gap identification with optimization recommendations, sentiment monitoring, and an Enterprise-tier hallucination detector AthenaHQ calls "Oracle discrepancy" checking.
Pricing: Essential free tier ($25 credit, roughly 300 credits), Starter $295/month (roughly 3,600 credits), Enterprise custom, with a 17 percent discount for annual billing.
AthenaHQ's free Essential tier answers a real question: whether an ongoing free AI-visibility tool exists at all, not just a one-off checker. It runs indefinitely, capped by a monthly credit allotment rather than a time limit. Its Oracle discrepancy detection, reserved for Enterprise, addresses a problem most tools do not name: a model can describe a brand's product or pricing incorrectly, and a tool that only counts mentions has no way to flag that the mention itself is wrong. A startup on the free plan gets real tracking, though the accuracy layer that differentiates AthenaHQ most stays locked to the Enterprise tier.
Verdict: AthenaHQ is the best AI visibility tool for startups that want ongoing tracking on a genuine free tier before committing budget. Its Enterprise-tier hallucination detection catches a problem plain mention-counting cannot: a model describing a brand's own product or pricing incorrectly.
5. Semrush AI Visibility Toolkit
What it is: Semrush AI Visibility Toolkit is an AI-visibility module inside Semrush's core SEO platform, tracking daily prompts across five AI surfaces.
Best for: Teams already running Semrush for SEO
AI surfaces tracked: Google AI Mode, ChatGPT, Google AI Overviews, Perplexity, Gemini (pulled from Semrush's knowledge-base documentation, not its marketing page)
Core capabilities: Daily prompt tracking, an AI Visibility Score paired with share of voice, sentiment analysis, Brand Performance reporting, prompt research for volume and difficulty, and an AI Search Site Audit that checks crawlability for AI bots specifically.
Pricing: $99/month base tier (25 prompts tracked, 300 daily AI-analysis queries, 10 CSV exports per day); add-ons run $60/month per 50 additional prompts and $99/month per additional domain.
Semrush adds one thing a pure monitoring dashboard does not: an AI Search Site Audit that checks whether a site's structure and crawlability let an AI bot read it. Most competitors here only measure the downstream half of that visibility problem; Semrush's audit covers the upstream half too. The entry tier reads thin next to Otterly.AI's broader starting allotment, and the add-on pricing per prompt block and per domain adds up quickly for a team tracking more than one brand.
Verdict: Semrush AI Visibility Toolkit is the best AI visibility tool for a team that wants AI-search tracking to sit inside the same login as its existing SEO audits and keyword research. Its AI Search Site Audit checks whether AI crawlers can even read a site, a step most competitors skip.
6. Otterly.AI
What it is: Otterly.AI is an AI-visibility platform built for smaller teams, tracking brand mentions across seven AI surfaces at one of the lowest published entry prices in this roundup.
Best for: Budget-conscious teams needing broad AI coverage
AI surfaces tracked: ChatGPT, Google AI Overviews, Google AI Mode, Perplexity, Microsoft Copilot, Gemini, Claude (7)
Core capabilities: Prompt research, brand and citation monitoring, competitive benchmarking, share of voice, a content and crawlability audit, sentiment analysis, and GEO optimization recommendations.
Pricing: From $29/month, with a 7-day free trial and no card required to start.
Otterly.AI tracks seven AI surfaces, including native Claude tracking that Ahrefs Brand Radar lacks, and starts under $30 a month. Only Waikay opens lower in this roundup, at $24.95 a month for four models, so nothing else here covers seven surfaces at Otterly.AI's entry price. At that price, a buyer gives up the research and automation layer that competitors like Profound and Semrush build around their tracking: prompt-demand estimation and crawlability audits at Site-Audit depth are not part of Otterly.AI's pitch. It tracks and reports cleanly rather than trying to be a full AI-search operating system.
Verdict: Otterly.AI is the best AI visibility tool for a solo marketer or small team that needs broad AI-surface coverage without an enterprise budget. Its sub-$30 entry price and no-card trial make it the lowest-friction way into this category, not the most feature-dense.
7. Scrunch
What it is: Scrunch is an enterprise AI-visibility platform whose Agent Experience Platform serves AI crawlers a machine-readable version of a site, on top of standard prompt and entity tracking.
Best for: Enterprises wanting a technical fix layer
AI surfaces tracked: ChatGPT, Perplexity, Claude, Gemini, Copilot confirmed on Scrunch's homepage; Google AI Mode, Google AI Overviews, and Meta confirmed on Scrunch's own pricing page, though no single Scrunch page lists all eight together.
Core capabilities: Prompt, topic, and entity performance tracking; real-time AI-bot crawl activity monitoring; benchmarking by competitor, persona, topic, and geography; citation analysis; crawl-error detection; and the Agent Experience Platform (AXP), which serves AI agents a lightweight, structured version of a site rather than the standard page.
Pricing: Starter $250/month billed annually or $300/month month-to-month, Growth $417/month billed annually or $500/month month-to-month, Enterprise custom.
Most tools in this roundup only measure how a model already describes a brand. Scrunch's Agent Experience Platform goes further: it changes what an AI crawler receives when it visits the site, closer to a technical-SEO fix than a monitoring layer. That is also why it fits enterprises; Scrunch pairs AXP with SOC2 Type II certification and role-based access control. Starter and Growth pricing is published with exact figures and can be started month-to-month; only Enterprise requires a custom quote, so the technical, enterprise-grade positioning does not come with fully sales-gated pricing the way some competitors' enterprise tiers do.
Verdict: Scrunch is the best AI visibility tool for an enterprise that wants to fix how AI agents read its site, not only track how models describe it. Its Agent Experience Platform changes what an AI crawler receives from a site, a capability none of the other nine tools here build.
8. Peec AI
What it is: Peec AI is an AI-visibility platform built around custom prompt tagging and multi-country tracking, positioned for agencies managing several client brands.
Best for: Agencies tracking many client brands
AI surfaces tracked: ChatGPT, Perplexity, Gemini, and Google AI Mode confirmed directly; a third-party review reports Claude as Enterprise-only, unconfirmed on Peec AI's own site.
Core capabilities: Prompt tracking with custom tagging, visibility trend monitoring, competitive benchmarking, sentiment and brand-mention tracking, multi-country tracking, AI-suggested prompts, citation source identification, CSV export, a Looker Studio connector, and API access.
Pricing: Peec AI's own pricing page lists tier names (Starter, Pro, Advanced, Enterprise) without exact dollar figures at check time; treat any price quoted elsewhere as unconfirmed until Peec AI's site shows a number.
Peec AI earns its agency positioning by pulling AI-visibility data into a Looker Studio dashboard or a custom report through the API, instead of forcing a second proprietary UI into a reporting stack that already includes paid-media and SEO data. Custom prompt tagging and multi-country tracking round out the case: one account structure across several brands and markets, instead of one login per client. Peec AI does not publish pricing, so a buyer cannot compare its actual cost against Otterly.AI's published $29 a month or Scrunch's published $250-a-month Starter tier without contacting sales directly.
Verdict: Peec AI is the best AI visibility tool for an agency reporting on AI visibility across multiple client brands and markets. Its Looker Studio connector and API access fit an agency's existing reporting stack instead of forcing a second standalone dashboard.
9. Knowatoa
What it is: Knowatoa is an AI-visibility platform, founded by Ryan Castillo and Michael Buckbee, built to read like a Search Console dashboard for AI search.
Best for: Teams wanting a Search-Console-style AI dashboard
AI surfaces tracked: ChatGPT, Claude, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Meta AI (7)
Core capabilities: Visibility and cited-URL tracking, gap analysis against competitors, AI research and drafting agents named Sam and Connie, weekly appearance monitoring, citation and sentiment tracking, competitive benchmarking that separates shared from unique question coverage, and multi-language support.
Pricing: Starter $59/month (3 AI services), Growth $199/month (all 7 AI services, API access, a dedicated account representative).
Knowatoa's cited-URL tracking goes past a simple mention count: it records which of a brand's own pages a model pulled a citation from, closer to the question a Google Search Console user already knows how to read. Its named research and drafting agents, Sam and Connie, add a content-production layer on top of tracking, letting a team close the loop from gap analysis to a drafted fix without switching software. Named founders and a dedicated account rep at the Growth tier signal a smaller, more hands-on vendor than Profound or Semrush.
Verdict: Knowatoa is the best AI visibility tool for a team that wants an AI-search dashboard that reads like Google Search Console, down to tracking which specific page an AI model cited. Its named Sam and Connie agents turn a gap-analysis finding directly into a drafted content fix.
10. Waikay
What it is: Waikay is an entity-based AI-visibility platform from InLinks Optimization Ltd that reports what four AI models already believe about a brand, separating each model's stored knowledge from what it retrieves live.
Best for: Auditing what AI models already believe
AI surfaces tracked: ChatGPT, Gemini, Claude, and Perplexity's Sonar (4), with each model reported twice: once as a Training Data answer and once as a Grounded Report drawn from live retrieval. Coverage runs across 40-plus countries and 13 languages.
Core capabilities: A brand visibility tracker scoring share of voice and topical presence across hundreds of prompts, Topic Reports that grade how well a model understands each topic area, a Fact Tracker that lists every claim a model makes about a brand as a verify-or-flag checklist, source tracking that separates knowledge sources from commercial ones, entity maps, and GEO action plans that turn topic-level findings into a prioritized task list.
Pricing: A free account with 3 non-renewable credits, then published monthly tiers at $24.95, $69.95 (120 prompts, 30 action plans, 2 seats), $199.95 (360 prompts, 90 action plans, unlimited seats), and $449.95 (880 prompts, 220 action plans), with Enterprise quoted custom.
The training-data versus grounded split is what separates Waikay from the rest of this roundup. Every other tool reports one answer per model, which leaves a team unable to tell whether a wrong claim lives in the model's stored knowledge, where a single new blog post will not dislodge it, or came from a page the model just fetched, where a content fix works within days. The Fact Tracker follows from the same design: it surfaces claims as a checklist to verify or flag rather than a sentiment percentage. Reports default to a monthly refresh and can be set to daily or weekly, a cadence choice that mirrors what makes a recurring client report worth reading, since enough has to move between pulls to justify the review. Four models ties Peec AI for the narrowest coverage in this roundup, with no Copilot, Grok, or AI Overviews tracking.
Verdict: Waikay is the best AI visibility tool for auditing what AI models already believe about a brand. It reports each model's training-data answer separately from its live grounded answer, so a team can tell whether a wrong claim sits in stored knowledge or in a page the model just read.
How AI Visibility Tracking Works
None of the major AI chat platforms publish an API that returns every time a brand gets mentioned. ChatGPT, Perplexity, Gemini, and Copilot all sit behind a conversational interface built for one user's question at a time. Every tool in this roundup works around that gap the same way: it runs a fixed or rotating list of prompts against each model on a schedule, captures the generated answer, and parses that text for a brand name, a link, and a sentiment read.
That workaround is why prompt volume is one of the first numbers worth comparing across vendors. Tracking twenty-five prompts a week, Semrush's base tier, is structurally different from tracking Ahrefs Brand Radar's 2,500 custom checks a month; a thinner prompt set can miss a real shift in how a model answers a category question because that exact phrasing was not in the rotation that week.
The second variable is whether the model searched the web before answering. A model answering from training data alone repeats what it absorbed months ago, while the same model in grounded mode retrieves live pages first, and the two answers about a brand often disagree. Most vendors collapse that into a single reported answer. Waikay reports the two separately for each of the four models it covers, which is the difference between a fix that takes days and one that takes a retraining cycle.
The workaround itself is not unique to AI-visibility tracking. The same Model Context Protocol shift reshaping how ad platforms answer a live data query for Claude or ChatGPT is starting to show up inside this category, as a handful of vendors begin exposing their own tracking data the same way instead of only through a proprietary dashboard.
How to Choose an AI Visibility Tool
The right AI visibility tool depends more on which situation matches a team's current setup than on which vendor lists the longest surface count.
Teams already inside Ahrefs or Semrush for keyword and backlink work should test Ahrefs Brand Radar or the Semrush AI Visibility Toolkit first: both sit inside a login that already exists, not a second subscription to maintain. Teams with no existing SEO-suite subscription get more coverage per dollar from Otterly.AI's sub-$30 entry tier or AthenaHQ's free Essential plan before committing to a bigger platform.
A second question decides more than surface count does: what happens after the dashboard shows a gap. A team with writers and an outreach process already in place needs measurement only. A team without one gets more from Wellows, which generates the article and supplies the publisher contact on the same platform that found the gap, at $37 a month for a single domain on ChatGPT alone. Brands that suspect a model is saying something wrong about them, rather than saying nothing, should start with Waikay's Fact Tracker, which lists each claim to verify or flag instead of scoring it as sentiment.
Agencies running visibility reporting across many client brands should weigh Peec AI's multi-country tracking and Looker Studio connector against Ahrefs Brand Radar's per-platform pricing, since the per-client math changes fast once a roster passes a handful of accounts, a reconciliation problem teams already fight across paid channels, where one client's numbers rarely arrive in a single, consistent format.
Enterprises with a dedicated AI-search budget line and a technical team fit Profound's prompt-demand research or Scrunch's Agent Experience Platform. Whichever tier a team picks, treat a vendor's published prompt count or coverage claim as a starting point to verify, not a final answer: a thin prompt sample can look conclusive and still miss how a model answers the exact phrasing a real customer would type.
What AI Visibility Metrics Matter
Four numbers show up across almost every tool in this roundup, and none of them work exactly like a traditional SEO metric.
Mention rate is the most basic: the percentage of tracked prompts where a brand's name appears anywhere in the generated answer, whether or not the AI links to the brand's site. Share of voice goes a step further, comparing how often a brand appears against its named competitors across the same prompt set, the closest AI-search equivalent to a market-share number. Citation rate is narrower but more useful for anyone chasing referral traffic: it measures how often a model links out to a brand's own URL as a source, something Perplexity does on most answers and ChatGPT does far less consistently. Sentiment tracking flags whether a mention reads positive, neutral, or negative, since a model can name a brand accurately and still frame it unfavorably next to a competitor. It is the newest and least standardized of the four.
Citation rate is the metric worth the most scrutiny before trusting it, since a page can earn a citation for reasons unrelated to its ranking elsewhere. Confirming why a specific page got pulled as a source, not just that it did, draws on the same discipline used to validate ad-creative performance: a specific, checked mechanism, not a number taken on faith.
Final Verdict
The right AI visibility tool depends more on what a team already has in place than on any single feature list.
Profound fits an enterprise team with a dedicated AI-search budget that needs to research prompt-level demand, not just track mentions after the fact. Teams already running Ahrefs or Semrush should test Brand Radar or the AI Visibility Toolkit first: no new login required.
Budget-conscious buyers have two options: AthenaHQ's free Essential tier for ongoing tracking with no card required, or Otterly.AI's sub-$30 entry price for seven-surface coverage. Agencies juggling several client brands should start with Peec AI's multi-country tracking and reporting-stack connector.
Two tools answer a different question than the rest. Wellows suits a small team with nobody to hand a gap report to, since the content generation and verified outreach contacts sit on the same platform that found the gap. Waikay suits a brand worried less about being invisible than about being described wrong, and its split between training-data and grounded answers shows which of the two problems it actually has.
Enterprises with a technical team wanting a deeper fix than measurement alone should look at Scrunch, whose Agent Experience Platform changes what an AI crawler receives rather than only reporting how a model describes it. Knowatoa suits a team that wants a Search-Console-style AI dashboard down to the specific page a citation came from.
None of this replaces the budget conversation underneath it. Most marketing teams still route a disproportionate share of paid budget through one platform, and AI search is a new line item competing for a slice of it, not a replacement for it. Pick the tool that matches the AI surfaces a brand's customers already use to research a purchase, and track it for a full month before switching.
Frequently Asked Questions About AI Visibility Tools
What is an AI visibility tool?
An AI visibility tool runs a set of prompts against ChatGPT, Perplexity, Google AI Overviews, and similar AI answer engines on a schedule, then records whether, how, and in what context a brand gets mentioned or cited as a source. It is the AI-search equivalent of a rank tracker, except there is no fixed position one through ten, only a mention rate, a sentiment read, and a list of which competitors showed up instead.
How do AI visibility tools track ChatGPT if there's no public API for brand mentions?
None of the major AI chat platforms publish an API that returns every time a brand was mentioned. Every tool in this roundup works around that the same way: it runs a fixed or rotating list of real-user-style prompts against each model on a schedule, captures the generated answer, and parses it for mentions, citations, and sentiment. That is why prompt volume matters when comparing tools, and why "mention" and "citation" are two distinct metrics that not every vendor separates clearly.
Is there a free AI visibility tool?
Yes, with real limits. Ahrefs and Semrush both publish free one-off checkers with no card required; AthenaHQ's Essential tier is free on an ongoing basis with a capped monthly credit allotment; Waikay's free account gives 3 non-renewable credits, enough for a first look rather than ongoing tracking; Otterly.AI and Wellows each offer a 7-day free trial rather than a permanently free tier. None of the free options match a paid tier's daily monitoring frequency or prompt volume.
What's the difference between AI visibility tracking and traditional SEO rank tracking?
Traditional rank tracking measures a fixed position for a fixed keyword on a results page that looks the same for everyone. AI visibility tracking measures something less stable: whether a brand gets mentioned inside a generated answer that can vary between the same prompt asked twice, with no fixed position the way page-one rankings work. That is why every tool in this category reports a mention rate or share-of-voice percentage instead of a rank number.
Which AI platform should a brand track first, ChatGPT, Perplexity, or Google AI Overviews?
It depends what is being measured. ChatGPT has the largest reach, more than 900 million weekly active users as of February 2026, but links out to a source far less consistently than Perplexity does. Google AI Overviews now appear on more than 43 percent of U.S. searches as of May 2026, the highest-volume surface for brands that already rank organically. Most tools in this roundup track all three by default. That is the practical answer: weight the read by whichever surface matches a brand's actual traffic mix.