Check whether AI can find, read, and quote your site
AI answers are built from pages that are indexed, snippet-eligible, and crawlable. This free checker grades your domain against those gates in under a minute, so you know whether your site is even eligible to appear when buyers ask ChatGPT, Perplexity, Gemini, Claude, or Google's AI Overviews about your category. No signup, no install.
The grade and every check are free. You do not need an account to run it.
What is an AI visibility check?
An AI visibility check tells you whether your website can show up in the answers AI assistants give. When someone asks a question, tools like Google's AI Overviews and AI Mode build a single answer by pulling from pages across the web, and ChatGPT, Perplexity, Claude, and Gemini do something similar. A brand that is not crawlable or not allowed to be quoted simply cannot be part of that answer.
There are two layers to it. The first is technical readiness: can the engines reach, read, and quote your pages at all? The second is answer-level presence: when the answer gets written, does it actually name you? This free checker measures the first layer, the eligibility gates. The full ClarAI analysis measures the second.
Why AI visibility matters now
More buyers now read an AI answer before they ever reach a list of links. The answer names a short set of brands, and that short list is doing the work a page of search results used to do. If you are not in it, the buyer may never learn you exist.
Google has published how this works. AI Overviews and AI Mode run on the same Search index, using a technique it calls query fan-out: the system issues several related queries at once and pulls a wider set of pages into one generated answer. Eligibility for those features is the familiar foundation, indexed, snippet-eligible, and crawlable content. Optimizing for AI search, in Google's own words, is still SEO. That is good news: it means the gates are knowable and checkable, which is exactly what this tool does.
Source: Google Search Central, "Optimizing your website for generative AI features on Google Search," 2026.
What ClarAI's free checker actually checks
The checker composes cheap public probes into a single A to F grade. It reads your robots.txt and your homepage HTML, then scores seven checks and shows three more rows for information only, with no weight in the grade. The checks make no AI calls and hide nothing: each one comes back marked Pass, Warn, Fail or Unknown, with a plain-language reason and, where relevant, how to fix it. One separate sample answer, labelled as a sample of one, runs alongside and never moves the grade.
The gates that decide eligibility
These carry the most weight in the score, because they are the binary gates on whether an AI answer can include you at all.
Snippet eligibility
Whether snippet controls (noindex, nosnippet, max-snippet, or data-nosnippet) are stopping your pages from being quoted. This is the single biggest gate: AI Overviews can only quote text a page is allowed to snippet, so one restrictive directive can silence an otherwise healthy site.
Googlebot access
Whether robots.txt lets Googlebot crawl the site. Google's AI Overviews and AI Mode source their pages through standard Googlebot, so blocking it removes the site from Google's AI answers, not just from classic Search.
AI crawler access
Whether robots.txt allows the AI search and retrieval crawlers (OAI-SearchBot, PerplexityBot, Claude-SearchBot, Claude-User). Blocking one keeps the site out of that engine's answers. Training crawlers (GPTBot, ClaudeBot) and the Google-Extended token are reported on their own unscored row: blocking them is a policy choice, not a visibility problem. Path-level rules are reported too.
The signals engines read on the page
These do not gate you outright, but they shape how easily an engine can understand and quote your homepage.
Title and meta description
Whether the homepage has both. Classic search hygiene: Google builds its title link from the title and may use the meta description for the snippet. Not a documented AI citation factor.
Heading structure
Whether the page has an H1 and clear section headings. General hygiene for readers and crawlers; Google says there is no need to break content into tiny pieces for AI.
Structured data
Whether the homepage publishes JSON-LD such as Organization and WebSite, which Google uses for site names and logos. Google says no special schema is needed for AI features.
Semantic landmarks
Whether the page uses HTML5 landmarks (main, nav, header, footer). It is a directional agent-readiness signal, not a ranking factor.
Markdown negotiation (not scored)
Whether the site serves a plain-text or Markdown version when a client asks for one, shown for information only with no weight in the grade. It is an optional agent-readiness nicety that most sites skip today, so it never lowers your grade.
llms.txt (not scored)
Whether an llms.txt file is published, shown for information only with no weight in the grade. Google says Google Search does not use it, and an Ahrefs study (May 2026) found 97 percent of about 38,000 valid llms.txt files received no requests.
What free AI visibility checkers actually measure
Six free checkers, ours included, on four questions a free check should answer before you trust its number: which engines it names, whether it shows you the AI answer text, whether it states how many prompts sit behind the result, and whether it needs a signup. Every cell was read on the checker's own page on 9 September 2026 (Peec, Profound and Semrush re-read on 7 October 2026; AIClicks, AthenaHQ, Rankability, Reach, Scrunch, Trakkr, Writesonic, ZipTie and the Ahrefs and Search Atlas free checkers re-read on 13 October 2026; Ahrefs Brand Radar prices re-read on 14 October 2026); we did not run the other five, so anything a page did not say is marked not stated rather than guessed. ClarAI makes one of these, and its row is labelled.
| Checker | Engines named on its page | Shows the answer text | Shows a sample size | Needs signup |
|---|---|---|---|---|
| Ahrefs AI Visibility Checkerchecked 2026-10-13 | ChatGPT, Google Gemini, Perplexity, Microsoft Copilot, Google AI Overviews, and Google AI Mode | Not stated. The page describes mentions, topics and cited pages, not answer text. | Not stated. The page states a corpus (475M+ monthly prompts) and does not state how many prompts are run for your brand. We did not run the checker. | No. 'No signup required. Results in seconds.' The free tool shows 'a limited preview (top 5 results per section)'. |
| ClarAI free graderOurschecked 2026-09-09 | Seven scored technical readiness checks that apply to every engine (plus three informational rows that carry no weight), plus one sample answer from one engine (ChatGPT's API, no live web search) | Yes. The one sample answer is shown as an excerpt with the brand present or absent. It is one prompt, one engine, one run, and the caption says it is not repeatable. | Yes. Sample size one, printed on the teaser. The readiness grade is deterministic and carries every check. | No. No account for the grade or the sample answer. Email is optional, for a copy of the report. |
| LLMClicks AI Visibility Checkerchecked 2026-09-09 | Named inconsistently on its own page: 'ChatGPT, Gemini, and Perplexity' in the header, 'ChatGPT, Perplexity, and Claude' in the body | Not stated. Promises 'AI summaries' and how AI describes your products; verbatim answers are not stated. | Yes. 'Test up to 5 custom queries' across awareness, comparison and purchase intents. | No. 'No login or signup required.' PDF report offered. |
| Omnia Free AI Visibility Checkerchecked 2026-09-09 | ChatGPT, Perplexity, Google AI Overviews, Google AI Mode | Yes. '10 prompts per engine mapped to how AI responds', delivered as a report. | Yes. 'We run 10 category-relevant prompts per engine', 40 in total. | Email for the report. 'Enter your domain and email, and we send you the full report' within three to five minutes. |
| Search Atlas AI Visibility reportchecked 2026-10-13 | ChatGPT and Gemini | Not stated. Promises 'prompt-level snippets for your brand mentions, cited sources, and competitor appearances'; whether those are the full answers is not stated. | Yes. The page offers 'a free 10-prompt snapshot across ChatGPT and Gemini'. | No. 'No Account Required' and 'No credit card or setup required'; you enter a brand to start. Whether an email is asked for is not stated. |
| Semrush AI Search Visibility Checkerchecked 2026-10-07 | ChatGPT, Gemini, Google AI Overviews, Google AI Mode | Not stated. Shows a 0 to 100 score, mention counts, citations and top cited pages; answer text not stated. | Not stated. The page states a database of 26M+ prompts and responses and does not state the prompts run for your brand. We did not run the checker. | No. 'Three times per day for free, without registering or creating an account.' |
A free checker is a one-time look, not a measurement. A score with no prompt count behind it cannot be compared with another score, which is why our own grade prints its readiness checks one by one and labels its single sample answer as a sample of one. For what AI visibility means and how it is measured, read what is AI visibility; for the paid tools behind these checkers, the dated tool comparison; to run ours now, grade your site free.
How the checker works
Paste a domain and the grade comes back in under a minute. The score is weighted so that a blocked crawler or a nosnippet directive cannot be outvoted by cosmetic details, because those are the checks that actually decide inclusion. A check we cannot complete is marked Unknown and left out of the score rather than counted as a failure.
Every result is shareable at its own link, so you can send the report card to a colleague or a client without either of you needing an account.
What you get back
- A letter grade from A to F, with the 0 to 100 score behind it.
- Each of the seven scored checks marked Pass, Warn, Fail or Unknown, plus three informational rows that carry no weight.
- A plain-language reason for every check, and a fix hint for the ones that need work.
- A shareable link to the report you can hand to your team.
Where the free checker stops, and what goes further
We want to be straight about this. The free checker measures technical readiness. It tells you whether AI engines can reach, read, and quote your site. It does not tell you whether they currently name your brand in their answers, because that is a different question that takes real queries against real engines to answer.
ClarAI is new and pre-launch, so you will not find customer counts or testimonials on this page. What you will find is a tool that does exactly what it says, and a full product that measures the layer the checker cannot see.
The full ClarAI analysis
The full analysis samples the real answers three AI engines, ChatGPT, Gemini and Claude, give to your buyers' questions. It shows whether your brand is named, who gets recommended instead, and which pages earned the citation, with the sample size behind every number so you can trust it. It starts free with one brand project.
AI visibility checker FAQ
Is the AI visibility checker really free?
Yes. You paste a domain and get a letter grade with every individual check, for free, with no signup and nothing to install. There is no gated report and no paywalled score. The only thing that asks for an account is the full answer-level analysis, which is a separate, deeper product.
What does the checker actually measure?
Technical readiness: whether AI engines can reach, read, and quote your site. It looks at crawler access, snippet controls, and the on-page signals engines rely on. It does not measure whether ChatGPT or Google's AI Overviews currently name your brand in their answers. That answer-level visibility is what the full ClarAI analysis measures.
Which AI engines does this cover?
The checks target the eligibility gates for the engines buyers actually use: Google AI Overviews and AI Mode (through standard Googlebot and snippet controls) plus the retrieval crawlers behind ChatGPT search, Perplexity, and Claude. Blocking one of those crawlers, or blocking snippets, is what keeps a site out of those answers. Training crawlers and the Google-Extended token are reported separately and not scored.
Does this check ChatGPT?
Partly, and we want to be exact about it. The grade itself is a technical readiness check: seven scored, deterministic checks of your robots.txt and homepage that decide whether any engine can crawl, read, and quote you, plus three informational rows that carry no weight. On top of that, each grade runs exactly one buyer-style prompt against one engine (ChatGPT's API, without live web search) and shows you the excerpt with your brand marked present or absent. That is a sample of one, it is not repeatable, and the caption on the result says so. It is not a measurement of how often ChatGPT names you. The full ClarAI analysis does that across several prompts, several runs, and three engines, with the sample size printed on every number.
Do I need to install anything or sign up?
No. Paste your domain and the grade comes back in under a minute. There is no tag to add, no plugin, and no account required for the grade.
How is this different from a full AI visibility analysis?
The free checker tells you whether your site is technically eligible to appear in AI answers. The full ClarAI analysis goes further: it samples the real answers three AI engines give to your buyers' questions, shows whether your brand is named, who gets recommended instead, and which pages earned the citation. Readiness is the gate; the full analysis is the scoreboard.
Is the grade accurate? Does it use internal Google data?
No third-party tool has access to Google's internal ranking or AI systems, and ours does not claim to. Google has said as much publicly. The checker reads only public signals that any crawler can see: your robots.txt, your homepage HTML, and the snippet directives on it. Everything it reports, you can verify yourself.
Why does AI visibility matter for my business?
When someone asks an AI assistant about your category, the answer names a short list of brands, and most buyers read that answer instead of clicking through ten links. If your site is not eligible to be crawled and quoted, you are not in the running for that list. The checker tells you whether the door is even open.
See where your site stands with AI
Run the free checker on your domain and get an honest readiness grade in under a minute. No signup, no install.