The GEO Audit Checklist: How We Measure AI Visibility Before We Quote a Single Fix
We don't quote a GEO engagement until we've run the audit. Not because it's a sales ritual — because you cannot fix AI visibility you haven't measured, and most of what gets sold as a “GEO audit” measures nothing.
This is the actual checklist my team works before we put a number on a generative engine optimization project. It's the same sequence whether the client is a law firm that's vanished from ChatGPT or an ecommerce brand watching Perplexity recommend three competitors and never them. Ten checks, run in order, each with a pass criterion and a red flag. If you run an in-house marketing team or you're an operator trying to sanity-check what an agency handed you, you can run a lighter version of this yourself — I'll tell you where the by-hand version breaks down.
First, the stakes. The Q1 2026 AI Visibility Index — 95,392 data points across 1,004 businesses — found 65.9% of them invisible in AI search. Not ranking poorly. Invisible: never named, never cited, when a buyer asks the AI a question their business exists to answer. A GEO audit is the instrument that tells you which side of that line you're on, and by how much. Our free AI visibility auditruns this exact checklist for you, but the value is in understanding what it's testing — so here it is.
Before you start: define what “visible” even means
The single most common reason a GEO audit produces a useless result is that it never defined the answer set. “Are we visible in AI?” is not a question an audit can answer. “When someone asks ChatGPT for the best commercial roofing contractor in Denver, are we in the list?” is. Before you run a single query, lock three things:
- The query set. 15–40 real buyer prompts, phrased the way a human actually asks an AI — “who's the best…”, “recommend a…”, “compare… vs…”, “is… any good” — not your head keywords from a rank tracker. AI questions are conversational and long-tailed.
- The competitor set. Your top three rivals, named. Visibility is relative; “we're mentioned 20% of the time” means nothing until you know the leader is at 70%.
- The engines. ChatGPT, Perplexity, Google AI Overviews, Gemini, and Claude at minimum. Each retrieves differently, so a one-engine audit is a distorted read.
Get this wrong and every number downstream is noise. Get it right and the rest of the checklist becomes mechanical.
The 10-part GEO audit checklist
The checks run in a deliberate order — measurement first (are you even in the answer?), then diagnosis (why not?), then the plan. Skipping to diagnosis before you've measured is how agencies end up “optimising” for a problem the client never had.
Baseline visibility — are you in the answer at all?
This is the whole ballgame, and it comes first. For every query in your set, ask each engine and record one thing: were you named in the answer, yes or no. Not “could you rank” — whether the model actually said your name when a buyer asked. This is the number the AI Visibility Indexis built on, and it's the number two-thirds of businesses fail.
Citation and link presence — named vs. actually cited
Being named is good. Being cited with a link is better — it's a click, a referral, and a signal the engine trusts your source enough to send a user there. These are different metrics and a real audit tracks both. Perplexity and Google AI Overviews link generously; ChatGPT cites more selectively. You want to know not just “did they say my name” but “did they link me as the source.”
AI crawler access — can the engines even reach you?
Half the “why are we invisible” mysteries end here. If your robots.txt or a firewall rule blocks the AI crawlers, you've locked yourself out of the training and retrieval that visibility depends on. This is a five-minute check that saves you from optimising content no engine can read.
GPTBot, OAI-SearchBot, PerplexityBot, ClaudeBot, Google-Extended. Then check server logs or your CDN/WAF for these agents getting 403s or blocks. A Cloudflare bot-fight rule or an aggressive security plugin will silently gate them even when robots.txt is clean.Entity and structured data — does the graph know who you are?
AI engines reason about entities, not strings. If the model isn't confident that “your business” is a distinct, well-defined thing — with a consistent name, category, location, and set of relationships — it won't risk naming you. Entity confusion (two businesses with your name, an inconsistent NAP, no canonical identity) is one of the quietest killers of AI visibility.
Content extractability — can a model lift a clean answer from your page?
Engines quote the pages they can extract from easily. If your best answer is buried in a 1,400-word preamble, trapped in an image, or written as marketing mush that never states a fact plainly, the model reaches for a competitor who wrote it as a clean, liftable claim. Extractability is a content-structure problem, not a word-count one.
Freshness and consistency — is your information current and un-contradicted?
Models discount sources that look stale or that contradict themselves across pages. If your pricing says one thing on the services page and another in an old blog post, or your “2024 guide” still leads your topic, you're handing the engine a reason to trust someone else. Consistency is a trust signal; contradiction is a demotion.
Third-party citation footprint — what does the web say about you?
This is the check most on-page “GEO audits” skip entirely, and it's the one that moves the needle most. Engines don't just read your site — they learn who's credible from what independent, authoritative sources say about you. If the third-party web is silent on your business while competitors are cited in roundups, press, and industry articles, no amount of on-page schema closes the gap.
Competitor share of model — who owns your category in AI?
Every check so far measured you. This one measures the field. Share of model is the percentage of AI answers in your category that name a given business — the AI-era equivalent of share of voice. It reframes the whole audit: you're not trying to “be visible,” you're trying to take share from whoever currently owns the answer.
Sampling depth — did you measure enough to trust the numbers?
This is a meta-check, and skipping it is how audits lie. AI answers are non-deterministic: ask the same question five times and you can get five different lists. A number built on one sample per query is a coin flip dressed as data. Before you present a single finding, confirm the audit sampled deeply enough that the numbers are stable.
The prioritised fix list — audit to plan
An audit that ends in a score is half an audit. The deliverable that matters is a ranked list of fixes, each tied to the check that surfaced it and ordered by visibility earned per hour of work. This is the bridge from “here's what's broken” to “here's what we do Monday.”
“A GEO audit that ends in a score is half an audit. The half that matters is the ranked list of what to fix first.”
Joel House · Founder, Xpand Digital
What a fake GEO audit looks like
The category is new enough that “GEO audit” gets slapped on things that measure nothing. If you're evaluating an agency's audit — or your own — these three tells mean you're looking at theatre, not diagnosis:
- The single ChatGPT screenshotOne prompt typed into ChatGPT, screenshotted, pasted into a slide. No other engines, no competitor benchmark, no repeat sampling. Because answers vary run to run, a single screenshot proves nothing except that someone opened ChatGPT once.
- The re-skinned SEO crawlA traditional site-audit export with an 'AI readiness score' bolted on top. It flags missing schema, which is genuinely useful, but it never queries an actual engine — so it can't tell you whether you're cited, or which competitor took your spot.
- The generic checklist with no measurementA PDF listing llms.txt, FAQ schema, and entity tips that apply to every business on earth. Reasonable advice, zero diagnosis. Without a baseline and a competitor benchmark, it can't tell you what's actually costing you visibility — only what's theoretically possible.
The common thread: none of them query real engines at real sampling depth against real competitors. That's the line between a GEO audit and a GEO-flavoured guess. The reason we can run the real version is that we built the instrument for it — MentionLayer is the same platform that generated our Q1 2026 AI Visibility Index, and Joel wrote AI for Revenueon the strategy behind it. Agencies selling AI visibility without their own measurement layer are reading someone else's dashboard and hoping.
How to run a lighter version yourself this week
You don't need a platform to get a directional read. If you want a gut check before you talk to anyone, here's the minimum viable version an operator can run in an afternoon:
- Pick 15 buyer prompts phrased conversationally, and name your top three competitors.
- Run each prompt three times in ChatGPT, Perplexity, Gemini, and Google AI Overviews. Log a simple tally: were you named, were you cited, who was named instead.
- Check crawler access — open your robots.txt and confirm you're not blocking GPTBot, PerplexityBot, ClaudeBot, or Google-Extended.
- Read your top five pages as a model would — is there a clean, quotable answer near the top, or is it buried?
- Tally the third-party mentions for you versus each competitor.
That gets you 80% of the diagnostic value for zero budget. Where the by-hand version breaks is sampling depth and consistency — three runs of 15 prompts is a signal, not a stable score, and it's hard to re-measure the exact same way next quarter to prove your work moved the number. That's the gap the instrumented version closes, and it's why our free AI visibility audit runs the full sampled checklist and hands you the share-of-model table and the ranked fix list, not a screenshot.
Frequently Asked Questions
Keep going
- Free AI visibility audit— we run this full checklist on MentionLayer and hand you the share-of-model table and ranked fix list.
- GEO agency— how we execute the fix list: entity work, schema graphs, extractable content, and an earned-citation campaign.
- Generative engine optimization— the full methodology behind the moves the audit prioritises.
- The complete link-building guide— the earned-citation mechanics behind check #7, aimed at AI citations.
Want to know where you
actually stand in AI search?
We'll run this exact checklist on your business — baseline visibility across five engines, a competitor share-of-model benchmark, and a prioritised fix list. Measured on MentionLayer, walked through by Joel.
