GEO Assessment Tools Compared: The AI Audit Workflow

GEO assessment tools check, in one pass, whether AI systems such as ChatGPT, Perplexity, Gemini and Google AI Overviews can reach, understand and quote your website, and where your brand stands in their answers today. No single tool covers the whole assessment: a technical checker handles crawler access and citability, validators and a manual review cover your entity facts, and a prompt run sets the baseline. Work through those four steps in that order, once, before you pay for ongoing monitoring.

A note on terms: GEO here means Generative Engine Optimization, the term introduced in the research paper by Aggarwal et al. (2023). It does not mean geodata, geospatial analysis or local listings. If you came for map or location tools, this page will not help.

This guide is about the assessment workflow: the one-off inventory at the start. If you are choosing between tool categories, read our GEO tool comparison 2026. If you already know you need ongoing tracking, our guide to GEO monitoring dashboards covers what a dashboard must show. If you want to run the checks yourself with free tools only, use the step-by-step free GEO audit toolkit.

What a GEO assessment covers

An assessment answers one question: what stops AI systems from using and naming you right now? It splits into four layers. Each layer needs a different kind of tool, which is why "one GEO tool" rarely covers everything.

Layer	Question it answers	Typical tool	Output
1. Crawler access	May AI crawlers read the pages, and is the content in the HTML?	Technical checker, robots.txt check, command line	List of blocked bots and pages that rely on JavaScript
2. Citability	Can a model lift a self-contained answer from your key pages?	Citability or content checker	Score per page plus the passages to rewrite
3. Entities	Are brand, product and company facts consistent and machine-readable?	Schema validators, manual review, direct questions to AI systems	Schema gaps and a list of wrong or outdated facts
4. Prompt baseline	For your buyers' questions, who gets mentioned and cited today?	Spreadsheet plus AI apps, or a monitoring tool trial	Mention and citation table per prompt and engine

Step 1: Crawler access

Start here because every later step depends on it. A page that AI crawlers are not allowed to fetch cannot be quoted, however well it is written.

• robots.txt per bot. Check the rules for each relevant crawler separately. OpenAI documents different bots for different purposes: GPTBot for model training, OAI-SearchBot for ChatGPT search, and ChatGPT-User for fetches a user triggers (OpenAI crawler documentation). Blocking GPTBot while allowing OAI-SearchBot is a legitimate choice; blocking both by accident is a common finding.
• Server and CDN rules. A clean robots.txt proves nothing if a firewall or bot-protection setting rejects AI user agents. Test the response directly.
• Content in the HTML. If the main text only appears after JavaScript runs, a crawler that does not render scripts sees an empty shell.

Two quick command-line checks cover the last two points:

curl -s -o /dev/null -w "%{http_code}\n" -A "OAI-SearchBot" https://www.example.com/pricing
curl -s https://www.example.com/pricing | grep -c "a sentence from your main text"

A 403 on the first line points to a user-agent block. A 0 on the second means the text is not in the delivered HTML. The first test only catches blocks based on the user-agent string; blocks based on verified IP ranges will not show up this way.

Step 2: Citability of key pages

Pick five to ten pages that answer the questions your buyers ask: product, pricing, comparison, and the two or three guides that bring in qualified traffic. For each page, check whether the answer to its main question stands in the first paragraph, whether comparisons sit in lists or tables, and whether claims carry a source and a date. Google's guidance for AI features in Search makes the same point in plainer words: the usual SEO basics apply, and there is no special markup that gets you into AI Overviews (Google Search Central: AI features and your website).

The output of this step is not a score but a short list of passages to rewrite, ordered by how important the page is.

Step 3: Entities and brand facts

AI answers describe your company from what they find across the web. Check three things:

1. Structured data. Does the site carry Organization markup with name, URL, logo and links to your official profiles, and does product or service markup match what the page says? Validate with Google's Rich Results Test and the Schema Markup Validator.
2. Consistency. Is the company name written the same way on your site, your social profiles, directories and partner pages? Different spellings split the signal.
3. What AI systems believe. Ask ChatGPT, Perplexity and Gemini "What is [brand]?" and "What does [brand] offer?". Write down every wrong fact: old prices, discontinued products, a wrong founding city. These errors are findings in their own right.

Step 4: Prompt baseline

The baseline records where you stand before you change anything. Without it, you cannot tell later whether a fix worked.

• Write 20 to 30 prompts your buyers would actually type, in the language of your market. Mix prompts with and without your brand name.
• Run each prompt in every AI system that matters to you, and run it more than once, because answers vary between runs.
• Record per answer: brand mentioned (yes/no), position in the answer, competitors named, sources cited, and any wrong statement.

Useful prompt patterns for the list:

• "What is the best [category] for [use case]?"
• "Which [category] providers work for [industry] in [country]?"
• "[Your brand] vs [competitor]: which is better for [use case]?"
• "How do I [task your product solves]?"
• "Is [your brand] a good choice for [company size]?"

You can run the baseline by hand in a spreadsheet or during a monitoring tool's trial. A trial saves time on repetition but only makes sense once steps 1 to 3 are done.

Which tools cover which step

The table maps tool types to the four steps. Vendor details come from our GEO tool comparison, where each provider's own website was checked on 24 August 2026; the comparison also lists entry prices. Measurement accuracy was not assessed.

Tool	Free entry point	Access	Citability	Entities	Prompt baseline
GEO Tool free check (geo-tool.com)	Yes, no signup, about 47 seconds	Yes, one page	Yes, one page	Schema signals only	No ongoing prompt monitoring in the free tier
Rankscale	Pro free for 7 days	Check in trial	Check in trial	Partly, via tracked answers	Yes, core use
Otterly.AI	Trial	Check in trial	Check in trial	Partly, via tracked answers	Yes, prompt and brand tracking
Peec AI	Trial	Check in trial	Check in trial	Partly, via tracked answers	Yes, with competitor benchmarks
Profound	Demo on request	Check in trial	Check in trial	Partly, via tracked answers	Yes, enterprise answer analysis
Semrush AI Toolkit	Paid suite only	Check in trial	Check in trial	Check in trial	Yes, as a suite add-on
Google Rich Results Test, Schema Markup Validator, Search Console, Bing Webmaster Tools	Free	Indexing and crawl status	No	Structured data	No

The monitoring vendors position their tools around prompt tracking; check anything beyond that during your trial. The practical conclusion: use free checkers for steps 1 to 3, and use a monitoring trial, if at all, for step 4.

A one-week assessment plan

For one market and a handful of key pages, this schedule works:

1. Day 1, scope: markets and languages, 5 to 10 key pages, 3 to 5 competitors, the prompt list.
2. Day 2, access: robots.txt per bot, server responses, HTML check for each key page.
3. Day 3, citability: score the key pages, mark the passages to rewrite.
4. Day 4, entities: validate structured data, collect naming inconsistencies, ask AI systems about your brand.
5. Days 5 and 6, baseline: run the prompt list with repetitions and fill the table.
6. Day 7, findings: one document with the baseline table and a fix list ordered by impact.

What to fix first

Findings are not equal. This order makes sense because each level blocks the next:

1. Access blocks on pages that should be cited. Nothing else matters until these are gone.
2. Wrong facts in AI answers about your brand, because they actively cost trust.
3. Missing answers on key pages: the question is covered, but the answer sits in paragraph five.
4. Missing mentions for category prompts. These usually need content and third-party sources, so they take longest.

Repeat the prompt baseline after the fixes have been live for a few weeks. That second run tells you whether ongoing monitoring is worth paying for.

When to hand the assessment over

A self-run assessment covers one market and a few pages well. Once you have several languages, many templates or need a benchmark of who gets cited instead of you and why, a professional GEO audit is the better fit: technical deep dive across the whole site, content and entity analysis, and a prioritized roadmap. Pricing is on request. To see where a single page stands before deciding, start with the free GEO check.

Frequently asked questions

What are GEO tools?

GEO tools help you understand and improve how AI systems such as ChatGPT, Perplexity, Gemini and Google AI Overviews use your website. They fall into two groups: checkers that assess whether your pages can be crawled, understood and quoted, and monitoring tools that record how often AI answers mention and cite your brand for a set of prompts.

What are the best GEO tools?

For a one-off assessment, the best setup is a free technical checker for crawler access and citability, Google and schema.org validators for structured data, and a prompt baseline run by hand or in a monitoring tool trial. For ongoing tracking, compare monitoring tools such as Rankscale, Otterly.AI, Peec AI and Profound against your own prompts during a trial.

Are there any free GEO tools available?

Yes. The GEO check at geo-tool.com scores one page for free without signup, and the AI crawler check, robots.txt generator, llms.txt generator and citability checker on the same site are free as well. Google Search Console, the Rich Results Test and Bing Webmaster Tools are free. Paid monitoring tools usually offer a trial or demo rather than a free tier.

How do I measure GEO?

Measure two things separately. Readiness: can AI crawlers reach your pages, is the content in the HTML, and are the key passages quotable. Outcome: for a fixed list of buyer prompts, how often does each AI system mention your brand and which sources does it cite, across several repeated runs. The assessment sets the first baseline for both.

How long does a GEO assessment take?

For a single market and five to ten key pages, a focused team can finish the four steps in about a week. A full-site audit with several markets, languages and a competitor citation benchmark takes longer, typically two to three weeks.

What is the difference between a GEO assessment and GEO monitoring?

An assessment is a one-off inventory that tells you what blocks AI visibility today and what to fix first. Monitoring repeats the prompt measurement on a schedule to show whether mentions and citations change. Run the assessment first; otherwise you pay to monitor a site that AI crawlers cannot read.