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An AI visibility checker tells you whether AI answer engines — ChatGPT, Google AI Overviews, Gemini, Perplexity and Copilot — **name your brand** or **cite your site** when buyers ask about your category. Your Google ranking does not predict this, so you have to check it directly. SourceWatch's free, working check is the AI SEO audit: enter one URL and in about 15 seconds you'll see whether AI engines can read, recognize and recommend that page — and the top fixes if they can't. No login to see your score.

TL;DR

  • **An AI visibility checker** answers one question: when someone asks AI about your category, does it **mention your brand** or **cite your site** — or name a competitor instead?
  • **Two things to measure, and they're different.** A **mention** = the AI names you in its answer. A **citation** = it links to your domain as a source. Citations are the stronger signal and the only thing that sends a click.
  • **SourceWatch's free check is the AI SEO audit** — one URL, a 0–100 AI-readiness score, a Google-recognition verdict, an AI-crawler access check, and your top fixes. Point-in-time, one page, no card.
  • **Honest about scope.** This is not a live in-page widget and not real-time monitoring. Ongoing tracking across all four engines and your whole site is on the trial — see the AI visibility tracker.
  • **Two moats.** SourceWatch also captures the real AI crawlers and AI-referral clicks on your own site, verified against vendor IP ranges, and works inside Claude Code via MCP — both things a prompt-only checker structurally can't do.

What an AI visibility checker actually checks

"AI visibility" means whether AI answer engines surface your brand when a user asks a relevant question. It is not the same as a Google ranking — a #1 blue-link page can be completely absent from the AI answer above it, and a page on result two can be the one the model cites. So AI visibility has to be measured on its own terms. There are two distinct things worth measuring, and confusing them is the most common mistake:

  • **Mention** — the AI names your brand in the text of its answer. Good for awareness, but it doesn't necessarily send anyone to your site.
  • **Citation** — the AI links to your domain as a source. This is the stronger authority signal: it means the engine trusted your page enough to footnote it, and it's the only thing that drives an actual referral click.

A complete checker reads both, then adds the context that makes them useful: where you place in the answer, whether the mention is positive or critical, which topics you're absent in, and — crucially — which competitors get named instead of you. A one-time checker gives you that as a snapshot; tracking it over time is what turns the snapshot into a trend.

Checker vs tracker — pick the one you actually need

A **checker** is a point-in-time reading: where you stand today. A **tracker** runs the same checks on a schedule, because AI answers drift — ask the same question twice and the wording (and the brands named) can change, so a single reading is partly noise. Start with the free check below; move to tracking once you want the trend line.

Why checking AI visibility matters now

The shift isn't hypothetical — it's measured. ChatGPT alone reached roughly 900 million weekly active users in early 2026. And when an AI answer is present, the clicks that used to flow to websites are staying inside the answer.

8% vs 15%

Google traditional-link click rate when an AI summary appears vs when it doesn't — clicks inside the summary happen only ~1% of the time (Pew Research, 2025)

In Pew Research's 2025 study of 900 U.S. adults across nearly 69,000 searches, users clicked a traditional result in just 8% of visits when a Google AI summary was shown, versus 15% with no summary — roughly half. Clicks on links *inside* the summary happened in only about 1% of visits, and roughly 18% of searches produced an AI summary at all. The takeaway is simple: if AI is increasingly the surface buyers see first, the brand it names is the one that wins the moment — and the only way to know whether that's you is to check.

The good news: AI visibility is optimizable

This isn't a lottery. The peer-reviewed GEO paper (Aggarwal et al., KDD 2024) showed that the right content tactics — answer-first structure, citable facts, clear sourcing — can lift a page's visibility in generative-engine responses by up to 40%. A checker tells you where you stand; the fixes tell you how to climb.

How an AI visibility check works (and how SourceWatch does it)

Under the hood, an automated AI visibility checker is honest and unglamorous: it fires a bank of real customer questions at the LLMs and parses each answer for your brand's mentions, citations, position and sentiment — then compares you against the competitors named instead. That's the mechanism, whether a tool dresses it up or not.

On this page, SourceWatch's free, working check is the **AI SEO audit** — a point-in-time read of a single page, not an inline widget and not live monitoring. Here's exactly what it returns:

  1. 1

    Enter one URL

    Paste the page you want checked — your homepage or a key landing page. No login required to see your result.

  2. 2

    We read it the way AI engines do

    In about 15 seconds SourceWatch checks whether Google's Knowledge Graph recognizes your brand as a real entity, whether AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended) are allowed to read the page, and how answer-ready its structure is.

  3. 3

    Get your AI-readiness score + top fixes

    You get a 0–100 score, a letter grade, a clear Google-recognition verdict, and your highest-impact fixes written in plain English — not a 40-page PDF.

Run the free check now. Enter one URL and see your AI-readiness score, Google-recognition verdict and top fixes in about 15 seconds — no card, no login to see your result.

Run the free AI visibility check

Prefer to check it yourself, by hand? Here's the free DIY method.

Build a query bank of 30–50 real customer questions (discovery, comparison and use-case). Run about 10 a week across ChatGPT, Gemini and Perplexity. For each answer, log: were you mentioned, were you cited, roughly what position, and which competitors were named instead. After a few weeks you'll see your mention rate, your average position, and the topics you're absent in. It's real work, and it's exactly the loop SourceWatch automates across all four engines on a schedule.

The honest contrast: free checkers vs the free audit

Plenty of free "AI visibility checkers" exist — Ahrefs and Semrush both run one. They're useful: typically a one-shot snapshot of where your brand is mentioned across a few engines. SourceWatch's free offering is shaped differently, and we'd rather be clear about that than overclaim. The table below is the honest comparison — including what the free audit does *not* do.

Typical free "AI visibility checker"SourceWatch free AI SEO audit
What it returnsOne-shot mention snapshot across a few enginesAI-readiness score + Google-recognition + crawler-access verdict + top fixes for one page
Mentions across enginesYes (snapshot)Not in the free audit — that's the tracker on trial
Tells you how to fix itUsually notYes — prioritized, plain-English fixes
Google entity / Knowledge Graph checkRarelyYes
AI-crawler access checkRarelyYes (GPTBot, ClaudeBot, PerplexityBot, Google-Extended)
Inline live widget on this pageNo — the working check is at /ai-seo-audit
Real-time / ongoing monitoringNo (free tier)No — point-in-time; tracking is on the trial
ScopeBrand-level snapshotOne page free; full site on trial
First-party AI traffic (verified)NoOn trial — real AI crawlers + referral clicks, verified vs vendor IPs
Works inside Claude Code (MCP)NoYes (on a plan) — agent can read the data and act

In short: a typical free checker is a brand-level snapshot of mentions; the free AI SEO audit is a page-level readiness check that also tells you what to fix. Different jobs — and you can run both. For a wider field guide, see the best AI SEO tools.

Two things a snapshot checker structurally can't do

Almost every AI visibility tool works the same way: fire synthetic prompts at the LLMs and parse the answers. That's genuinely useful, and SourceWatch does it too on a plan. But it's an *inference* — a sample of what the model might say, not a record of what actually happened on your site. Two things SourceWatch adds require being on your own analytics, which a prompt-only checker can't reach.

Moat 1 — First-party AI traffic, verified, not inferred

When an AI engine reads or cites your site, its crawler hits your pages and its answers send real referral clicks. SourceWatch captures both from your own first-party data via a one-line snippet or a Cloudflare Worker — and verifies each hit against published vendor IP ranges, so a spoofed user-agent pretending to be GPTBot doesn't pollute your numbers. That's ground truth: the real bots that crawled you and the real visitors who arrived from AI, separated from the fakes. A prompt-scraping checker can't show this, because it doesn't live in the model — it lives in your traffic logs.

Why "verified vs inferred" is the whole game on accuracy

Synthetic sampling can be badly off. One review caught a prompt-sampling tool undercounting a brand's ChatGPT mentions by roughly 97%. First-party capture isn't a sample — it's the actual event, so it doesn't drift with which prompts you happened to pick.

Moat 2 — It works inside Claude Code (MCP-native)

SourceWatch ships an MCP server, so your AI visibility data is readable and actionable from inside Claude Code — your assistant can pull your citation gaps and the real queries the models ran, and help you act on them in the same loop, not just stare at a dashboard. Among self-serve tools this is effectively unique; the only comparable agent stack is enterprise-only and gated behind a separate subscription.

What SourceWatch does NOT do (so you can choose with eyes open)

It doesn't generate content for you — it tells you exactly what to write and where the gaps are, but you (or your team, or your assistant) write it. There's no public REST API yet; access today is via MCP, with a REST surface on the roadmap. The free audit covers one page; full-site checks are on the trial. And no honest tool can promise a Google Knowledge Panel or guaranteed ROI — anyone who does is selling you a coin flip.

Checked it and you're invisible? How to improve

A low score isn't a verdict — it's a to-do list. The fixes that move AI visibility most are concrete and mostly within your control:

  • **Let the crawlers in.** Confirm GPTBot, ClaudeBot, PerplexityBot and Google-Extended aren't blocked in robots.txt. If they can't read you, you can't be cited — full stop.
  • **Become a recognized entity.** Add Organization schema and consistent references (LinkedIn, Crunchbase, Wikipedia where earned) so Google's Knowledge Graph knows you're a real business. If Google doesn't recognize you, AI engines have nothing solid to cite.
  • **Write answer-first.** Lead each key page with a direct one-sentence answer, use headings that mirror real questions, and back claims with citable facts. This is the core of answer-engine optimization and the single tactic the GEO research found lifts generative-engine visibility most.
  • **Publish an llms.txt file.** The /llms.txt standard (proposed by Jeremy Howard, Sept 2024) gives LLMs a curated, inference-time map of your best content — a concrete, low-effort signal you can ship this week.

Get the exact fixes for your page. The free audit returns your top prioritized changes in plain English — start there, then track your progress across all four engines on a trial.

Get your fixes — run the free audit

Frequently asked questions

What is an AI visibility checker?

An AI visibility checker tells you whether AI answer engines — ChatGPT, Google AI Overviews, Gemini, Perplexity and Copilot — mention your brand or cite your site when people ask about your category. It measures two distinct things: mentions (the AI names you in its answer) and citations (the AI links to your domain as a source). Citations are the stronger signal and the only one that sends a referral click. Your Google ranking doesn't predict either, so AI visibility has to be checked directly.

Is there a free AI visibility checker on this page?

We won't pretend there's a magic widget here. SourceWatch's free, working check is the AI SEO audit at /ai-seo-audit: you enter one URL and in about 15 seconds get a 0–100 AI-readiness score, a Google-recognition verdict, an AI-crawler access check and your top fixes — no card, no login to see your result. It's a point-in-time check of one page. Ongoing tracking across all four engines and your whole site is on the trial.

What's the difference between a mention and a citation?

A mention is when the AI names your brand in the text of its answer — good for awareness, but it doesn't necessarily send anyone to your site. A citation is when the AI links to your domain as a source. A citation is the stronger authority signal because it means the engine trusted your page enough to footnote it, and it's the only one of the two that drives an actual referral click. A complete checker reads both.

How is checking AI visibility different from checking my Google ranking?

A rank tracker tells you where you sit in Google's blue links. An AI visibility checker tells you whether the AI answer above those links names or cites you at all — and which competitors it names instead. The two don't reliably correlate: a #1 Google ranking does not guarantee an AI mention, and pages that don't rank well can still get cited. That's why AI visibility needs to be measured on its own.

Source: Pew Research — Google users click less when an AI summary appears
Can I check my AI visibility for free, by hand?

Yes. Build a query bank of 30–50 real customer questions, run about 10 a week across ChatGPT, Gemini and Perplexity, and for each answer log whether you were mentioned, whether you were cited, roughly your position, and which competitors were named instead. After a few weeks you'll see your mention rate, average position and the topics you're absent in. It's real work — exactly the loop SourceWatch automates across all four engines on a schedule.

Can I actually improve my AI visibility, or is it random?

It's improvable, not random. The peer-reviewed GEO paper (Aggarwal et al., KDD 2024) found the right content tactics — answer-first structure, citable facts, clear sourcing — can lift a page's visibility in generative-engine responses by up to 40%. Concrete wins: make sure AI crawlers aren't blocked, become a recognized Google entity (Organization schema + consistent references), write answer-first, and publish an llms.txt file.

Source: GEO: Generative Engine Optimization — Aggarwal et al. (KDD 2024)
How is SourceWatch more accurate than tools that just prompt the LLMs?

Prompt-scraping tools infer your visibility from a sample of synthetic prompts — useful, but a guess that drifts with which prompts you pick. SourceWatch does that too on a plan, then cross-references it with first-party data: the real AI crawlers that hit your pages and the real referral clicks that arrived from AI, verified against vendor IP ranges so spoofed bots don't count. That's ground truth, not a sample. One review found a prompt-sampling tool undercounting ChatGPT mentions by roughly 97% — exactly the gap first-party capture closes.

Does the free check monitor my visibility over time?

No — and we're upfront about it. The free AI SEO audit is a point-in-time check of one page. Because AI answers are non-deterministic, the meaningful signal is the trend across scheduled runs, which is what the AI visibility tracker does on a 14-day free trial (card optional): it runs your prompts across ChatGPT, Perplexity, Gemini and Claude on a schedule and shows mentions, citations, sentiment and share of voice over time.

Source: TechCrunch — ChatGPT reaches 900M weekly active users (Feb 2026)

Further reading

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