Short answer: SEO Engico is the top pick for an AI visibility audit if you want the findings tied to calls, enquiries and revenue, starting with its free AI Visibility Checker before any paid work. Varn is the specialist for checking AI answers against your real prices and specs, Exposure Ninja hands over the full prompt library, and Previsible sells audits as fixed projects without a retainer.
An AI visibility audit answers three questions. Do ChatGPT, Google's AI Overviews and AI Mode, Perplexity and Gemini mention you when buyers ask about your category? What do they say about you? And which sources are they relying on? The answers are often uncomfortable. Brands find they are missing from comparisons, described with old prices or confused with a competitor, and the cause usually sits on a review site or directory rather than on their own pages.
This list covers agencies that sell an AI visibility audit as a service, not software you run yourself, checked against their own websites in November 2026. We judged each on what the audit includes, what you get to keep, how it handles accuracy and sources, and whether it is a standalone purchase or the first step of a retainer. Several offer a free version, and we say where that is the case.
Disclosure: Kuma SEO is written by the team at SEO Engico, the agency ranked first on this list. No agency paid to appear here. We checked every other entry against the agency's own website in November 2026. Services and prices change, so confirm the details with an agency before you sign. More on how we work in our editorial policy.
At a glance: the 7 best AI visibility audit services
| # | Agency | Best for | Based in |
|---|
| 1 | SEO Engico | Brands that want a free AI visibility check, then fixes judged on revenue | London, UK |
| 2 | Varn | Brands that need AI answers checked against their real prices, specs and policies | Bradford on Avon and London, UK |
| 3 | Exposure Ninja | Businesses that want to keep the full prompt library behind their audit | Fully remote, UK |
| 4 | Previsible | Teams that want a fixed-scope AI audit without signing a retainer | San Francisco, US, and Santiago, Chile |
| 5 | Avenue Z | Brands that want a sector-specific AI visibility report walked through on a call | New York, Miami and Orlando, US |
| 6 | Seer Interactive | Enterprise teams that want a diagnostic before committing budget | Remote-first, Philadelphia, US |
| 7 | Prosperity Media | Australian brands that want AI visibility and entity audited together | Sydney and Melbourne, Australia |
How we picked
- Shows the prompts and the raw answers. A score on its own tells you nothing you can act on. Ask for the full prompt list, how it was built from real buyer questions, how many times each prompt was run and in which models, and the answers themselves.
- Checks accuracy against your own facts. Being mentioned with the wrong price, an old product or a made-up policy can be worse than not being mentioned. The best audits compare AI answers with your real product data, pricing and terms.
- Maps the sources behind each answer. AI tools lean on review sites, directories, press, forums and comparison pages. An audit should list the sources cited in your category, so you know which ones to correct or earn a place in.
- Benchmarks against named competitors. Share of mentions only means something next to the brands buyers compare you with. Look for a competitor view by topic and by model, not one blended number.
- Covers the technical layer. Blocked AI crawlers, content that only renders in JavaScript and contradictory schema all keep you out of answers. Good audits check robots rules, CDN and firewall settings, rendering and markup.
- Ends in a plan you could act on yourself. The output should be a prioritised list of fixes with clear owners. An audit that only makes sense if you hire the agency afterwards is a sales document, not an audit.
The 7 best AI visibility audit services in 2026
Our top pick
1. SEO Engico
- Best for
- Brands that want a free AI visibility check, then fixes judged on revenue
- Based in
- London, UK
- Founded
- 2018
SEO Engico is a London agency founded in 2018 that works with businesses in the UK, US, Australia and India. Its AI visibility work starts with the question every audit should answer: when your buyers ask ChatGPT, Google AI Mode, Perplexity or Claude for what you sell, are you named, and who is named instead? You can get a first read for free through its AI Visibility Checker, which covers ChatGPT, Perplexity, Gemini and Google AI Overviews.
The deeper review happens before any work starts. SEO Engico looks at the website, ads and tracking first, finds the one thing costing enquiries and fixes that first, then agrees a plan that says what will change, who does it and by when. On the AI side the fixes are pages with the answer near the top in words a model can lift, markup and profiles so AI tools know who you are and where, a site open to AI crawlers, mentions on trusted sites and monthly tracking of the questions buyers ask.
That ongoing work sits inside its $4,500 a month Growth retainer, after a 30-day Revenue Baseline ($3,499) that connects calls, forms and closed deals to the searches behind them. It also says it will tell you on the first call if your budget or market cannot realistically compete yet, which is sometimes the most useful finding an audit can give.
What stands out
- Free AI Visibility Checker covering ChatGPT, Perplexity, Gemini and Google AI Overviews
- Checks who ChatGPT, Google AI Mode, Perplexity and Claude name instead of you
- Looks at the website, ads and tracking before changing anything
- Fixes reported in calls, enquiries and revenue through a client portal
Worth knowing
- Beyond the free checker, its AI visibility work comes inside the SEO retainer rather than as a paid standalone audit, so it suits buyers who want the fixes as well as the findings.
- Its published case studies report search and revenue results rather than AI citation counts, and it never promises a specific citation.
See SEO Engico's AI search visibility service
No. 2
2. Varn
- Best for
- Brands that need AI answers checked against their real prices, specs and policies
- Based in
- Bradford on Avon and London, UK
Varn is an SEO, GEO and data analytics agency with offices in Bradford on Avon and London, and its AI search intelligence service is one of the most thorough audits on this list. It runs in four layers: visibility intelligence, covering citation analysis across LLMs, brand mention rate, share of AI voice and an audit of which domains and publications are cited; accuracy analysis; perception intelligence, covering sentiment, entity recognition and competitive positioning maps; and narrative alignment, which ends in a roadmap to correct inaccuracies and fill content gaps.
The accuracy layer is the standout. Its AI Alignment Engine cross-checks what generative AI says about you against your approved documents, including product specifications, price lists and brand guidelines, and flags outdated specs, wrong pricing models and false claims about things such as return policies or service terms. It also sells an Agentic Shopping Readiness Audit that checks whether your site can work with emerging protocols such as WebMCP and UCP.
What stands out
- Verbatim checks against your own product, pricing and brand documents
- Source attribution audit of the domains and publications AI cites
- Separate agentic shopping readiness audit for ecommerce
Worth knowing
- No pricing is published.
- It also sells ongoing AI visibility reporting, so be clear whether you are buying a one-off audit or monitoring.
No. 3
3. Exposure Ninja
- Best for
- Businesses that want to keep the full prompt library behind their audit
- Based in
- Fully remote, UK
- Founded
- 2012
Exposure Ninja is a fully remote UK agency founded in 2012, and its AI Search Audit is a focused analysis of how your brand appears in ChatGPT, Perplexity, Gemini and Google's AI Overviews and AI Mode. It measures visibility, mentions, sentiment, citations and positioning, then looks at how the platforms describe and recommend you, including the reviews, sources and competitors shaping those answers. A brand identity section covers how AI tools read your strengths, weaknesses, pricing and audience.
The useful detail is what you keep. You receive the full set of prompts used to assess your brand, each prompt is analysed for sentiment, visibility and position, and the audit includes technical checks for blocked crawlers, JavaScript problems and schema. It finishes with competitor benchmarking and a prioritised action plan.
What stands out
- Full prompt library handed over with the audit
- Sentiment, visibility and position analysed prompt by prompt
- Technical checks for blocked AI crawlers and JavaScript issues
Worth knowing
- No price is published. The first step is a consultation.
- The audit sits within its wider AI search service, so expect a proposal for ongoing work afterwards.
No. 4
4. Previsible
- Best for
- Teams that want a fixed-scope AI audit without signing a retainer
- Based in
- San Francisco, US, and Santiago, Chile
Previsible, based in San Francisco and Santiago, opens its GEO page with the audit itself: it checks how and where you are cited, what is being said and how competitors are positioned, then works on the gaps. The strategy work produces a prompt cluster map for your category, a competitive gap analysis showing where rivals are cited and you are not, and a prioritised placement plan, across ChatGPT, Gemini, Claude, AI Overviews, Amazon Rufus and Copilot.
What makes it relevant here is how you can buy it. Its contracted plan covers assessments and audits as defined, time-bound projects with no retainer, staffed by technical SEOs, content SEOs, engineers and project managers, and it ends with a phase two roadmap.
What stands out
- Audits sold as defined projects with no retainer
- Covers Amazon Rufus and Copilot as well as the main chatbots
- Competitive gap analysis as a named deliverable
Worth knowing
- No prices are published.
- Its ongoing plans run on 12-month retainers, so confirm the audit is contracted separately.
No. 5
5. Avenue Z
- Best for
- Brands that want a sector-specific AI visibility report walked through on a call
- Based in
- New York, Miami and Orlando, US
Avenue Z is a New York agency, with offices in Miami and Orlando, that combines PR, performance media and AI search. Its custom AI visibility report is built around your brand, sector and competitors, and the process is simple: submit a request, have a short call with an AI specialist about what the report needs, then go through the findings together.
The report covers brand sentiment across AI answers, visibility by key topic in each LLM, the top natural-language questions related to your brand or industry, the top cited sources that mention you, competitive benchmarking and an AI share of voice snapshot. Because Avenue Z runs PR and media relations in-house, it is well placed to act on the cited-sources findings if you want help afterwards.
What stands out
- Top cited sources that mention your brand
- Visibility broken down by topic and by model
- Findings reviewed with a specialist on a call
Worth knowing
- No price is published for the report.
- Its follow-on work leans on PR, media placements and content, so it suits brands that see coverage as the gap.
No. 6
6. Seer Interactive
- Best for
- Enterprise teams that want a diagnostic before committing budget
- Based in
- Remote-first, Philadelphia, US
- Founded
- 2002
Seer Interactive, founded by Wil Reynolds in 2002, says many clients start with a diagnostic phase rather than a 12-month programme, to see where they stand in AI search, what is influencing their visibility and what is worth testing. The deliverables menu is long and specific: a prompt development and tracking plan, AI-driven traffic conversion analysis, model comparison, AI citation and source analysis, AI competitive analysis, AI persona analysis and AI log file analysis.
Its research shapes what the audit looks for. Seer argues that brand accuracy has to be fixed before category rankings, and recommends tracking the share of your brand attributes that LLMs report correctly as a leading indicator. It has also published studies on ChatGPT's query fan-outs and on content recency, which feed into how it reads your data.
What stands out
- Diagnostic available without a long contract
- AI log file and persona analysis on the menu
- Brand attribute accuracy treated as a tracked metric
Worth knowing
- No pricing is published.
- Deliverables are chosen from a menu, so agree the exact scope in writing before you start.
No. 7
7. Prosperity Media
- Best for
- Australian brands that want AI visibility and entity audited together
- Based in
- Sydney and Melbourne, Australia
Prosperity Media, based in Sydney and Melbourne, starts its GEO blueprint with two audits run together: an AI visibility audit and a brand and entity visibility audit. It looks beyond your website at the wider footprint LLMs draw on, analysing brand mentions and citation frequency across ChatGPT, Gemini, Perplexity and other AI systems with repeatable buyer prompts and competitor benchmarking, so the baseline can be measured again later.
The technical side checks AI crawler access across robots.txt, CDN and firewall rules, which catches a problem many audits miss, along with entity schema and how content is structured for retrieval. It offers a free audit as the starting point.
What stands out
- Brand and entity audit alongside AI visibility
- Crawler access checked at the CDN and firewall
- Repeatable prompts, so results can be re-measured
Worth knowing
- The free audit is the first step of a wider GEO programme aimed at enterprise brands.
- No pricing is published.
How to choose an AI visibility audit service
Decide first whether you want a diagnosis or a plan someone will carry out. If you have an in-house team ready to act, a fixed-scope audit from Previsible or Seer Interactive's diagnostic gives you the evidence without a long contract. If accuracy is the worry, such as wrong prices or specs in AI answers, Varn's alignment checks are built for it. If you want to keep the working, Exposure Ninja's audit hands over the prompt library, and if press coverage is the gap, Avenue Z's report points at the sources to target.
Then check the method. Ask how many prompts, where they came from, how many times each is run, and in which models and locations. Ask whether you get the raw answers and the sources, not just a dashboard score. And ask what happens next: an AI visibility audit that leads to a proposal is fine, as long as the findings are useful even if you never sign.
Questions to ask before you sign
- How many prompts will you run, where do they come from, and can we keep the full list?
- Which AI tools and locations will you test, and how many times is each prompt run?
- Will you check what AI says against our own prices, products and policies?
- Will the audit show which sources each answer cites?
- Is the audit a standalone purchase, and what does it cost if we do not continue?
Frequently asked questions
What is an AI visibility audit?
An AI visibility audit is a structured check of how AI tools such as ChatGPT, Perplexity, Gemini and Google's AI Overviews mention, describe and cite your brand for the questions your buyers ask. A good one covers how often you appear against competitors, whether the facts are right, which sources the answers draw on and technical barriers such as blocked AI crawlers, and it ends with a prioritised plan.
How much does an AI visibility audit cost?
It depends on how many prompts, models, markets and competitors are covered, and none of the agencies on this list publish a fixed audit price. Some, including Prosperity Media, offer a free first audit, and Previsible sells audits as defined projects without a retainer. SEO Engico offers a free AI Visibility Checker, with deeper work inside its $4,500 a month SEO retainer.
Is a free AI visibility checker as good as a paid audit?
No, but it is a reasonable first look. Automated checkers usually run a small set of prompts once, while a proper audit uses a larger prompt set built from buyer research, reruns it across models, checks accuracy against your own facts and traces the sources behind each answer. Use a free check to decide whether the deeper audit is worth paying for.
How often should you repeat an AI visibility audit?
Most brands benefit from a full audit once or twice a year, with lighter monthly tracking in between. AI answers shift as models update and new sources appear, so a single snapshot goes stale quickly. Keep the same core prompt set between audits so the results can be compared.
What should an AI visibility audit include?
At minimum, the prompt list and raw answers, share of mentions against named competitors, a check of facts such as pricing, products and locations, the sources cited in your category, technical checks for AI crawler access and rendering, and a prioritised list of fixes. If an audit only gives you a score, ask for the evidence behind it.
Our verdict
Pick SEO Engico if you want a free first read on your AI visibility and then fixes judged on calls, enquiries and revenue, rather than an audit that sits in a drawer. Choose Varn if accuracy against your own prices and specs is the concern, Exposure Ninja if you want the full prompt library, Avenue Z for a cited-sources view with PR to act on it, Seer Interactive or Previsible for diagnostics without a long contract, and Prosperity Media for Australian brands that want entity and AI visibility audited together.
Try SEO Engico's AI search visibility service
