How to choose an AI visibility tool (2026)
AI-visibility (or GEO) tools all promise to tell you whether AI engines mention and recommend your brand — but they differ a lot in which engines they actually cover on the plan you buy, their scoring philosophy, how much they act for you, and how you buy them. This is a neutral, dated guide to the criteria that actually decide the choice, plus an honest landscape of the main tools.
AI search changes fast — what these engines cite can shift within days to weeks, not months. This page reflects research current as of October 2026 and is reviewed quarterly. Every statistic below is dated to its source so you can judge how current it is.
Key takeaways
- Match the tool to the engines you care about: each engine cites a different mix of sources, and base plans commonly cover a subset, selling the rest as per-model add-ons.
- Watch the scoring model — a single blended 'visibility score' hides per-engine reality and mixes a measurement with a diagnosis.
- Decide how much action you want: monitoring-only, autonomous content generation, or human-in-the-loop fixes with before/after attribution.
- How you buy differs as much as what you get: most vendors publish self-serve tiers with a trial, while their top tiers are sales-led with no public price — check which side of that line your requirements land on.
- Vendor features and prices move fast — all but one of the prices this page carried in June 2026 had changed within two months, which is why it now links to each vendor's live pricing page instead of restating figures.
Five criteria that actually matter
Engine & surface coverage
Each AI engine uses a different search backend and cites a different mix of sources (YouTube is the most-cited site in Google AI Overviews but only #8 in ChatGPT), so coverage is the first filter. Check which engines a plan actually includes rather than which the vendor tracks: base tiers commonly cover a handful of surfaces and sell the rest as per-model add-ons, so the engine you specifically came for may be a line item. Buy the engines your buyers actually use, not the longest list.
Scoring philosophy
Most tools roll everything into one blended 'visibility score'. That's convenient but it hides per-engine reality and quietly mixes a measurement (are you mentioned?) with a diagnosis (why?). Prefer tools that keep what engines actually say separate from the readiness factors behind it — so you know which number to act on.
Action model
Decide how much you want the tool to do. Some are monitoring-only. Some generate and publish content autonomously. Others recommend fixes but keep a human in the loop to approve them. There's no single right answer — but pick deliberately, and favour tools that attribute the before/after impact of each change rather than just claiming credit.
Accessibility & how you buy
Most tools publish self-serve tiers you can start on a card, and keep a sales-led tier above them with no public price. That line matters more than the headline number: below it you can validate value on a trial before committing, above it you are in a demo cycle before you see anything. Work out which side your requirements land on, then read the current price on the vendor's own page — and check what the base tier actually includes, because engines are commonly sold as per-model add-ons on top of it.
Evidence & transparency
AI search moves fast and is full of folklore (schema-for-citations, llms.txt). Favour vendors that show the evidence behind their recommendations, date their claims, and re-verify them — so you're acting on what the data supports, not what's fashionable.
The landscape at a glance
| Tool | Best for | Engines tracked | Action model | How you buy |
|---|---|---|---|---|
| Profound | Enterprise breadth & budget | Up to nine on Enterprise: ChatGPT, Perplexity, Gemini, Google AI Overviews, Google AI Mode, Microsoft Copilot, Claude, DeepSeek and Exa Search. The free trial tracks ChatGPT, Gemini and Google AI Overviews | AI Marketer agents that run recurring marketing work, plus AI-traffic analytics from CDN and hosting integrations | A free 7-day trial, then a sales-led Enterprise tier; agencies get a separate self-serve planSee Profound pricing |
| Semrush | Teams already on Semrush for SEO who want AI visibility in the same suite | Depends on the feature. Daily tracking of the prompts you choose covers ChatGPT, Google AI Mode and Gemini; Brand Performance reports add Perplexity and Google AI Overviews. Semrush says its Enterprise AIO tier adds Claude, DeepSeek and Grok. Copilot is not named | Monitoring, prompt and competitor research, an AI-readiness site audit and AI-generated recommendations; Enterprise adds content audits and optimization | A standalone AI Visibility plan per domain, or bundled into the SEO + AI Search plans; Enterprise is sales-led. Owned by Adobe since April 2026See Semrush pricing |
| Peec AI | Marketing teams & SEO agencies | Every self-serve tier tracks three models you choose (ChatGPT, Perplexity, Gemini, Google AI Overviews and AI Mode, Microsoft Copilot and others); further models are per-model paid add-ons, and Enterprise can choose from all | Prompt- and model-level analytics & reporting, with gap analysis and recommended actions | Self-serve tiers (Starter / Pro / Advanced) + a sales-led Enterprise tier, with a free trialSee Peec AI pricing |
| Otterly.ai | SMBs wanting an easy, low-cost start | Base plans track ChatGPT, Google AI Overviews, Perplexity and MS Copilot; Gemini, Google AI Mode and Claude are paid add-ons | Monitoring + GEO audit + prompt research | Self-serve tiers starting with a low-cost Lite plan, plus Enterprise, with a free trialSee Otterly.ai pricing |
| S6S | Teams wanting trustworthy measurement + a governed fix loop | ChatGPT and Gemini as people see them in the apps; ChatGPT search and Perplexity search; Google AI Mode for local businesses, and Google AI Overviews for any brand that turns it on. Claude, Grok and Copilot are not measured today. Each is reported separately rather than blended into one number | Human-in-the-loop fixes; per-fix before/after attribution | Invite-only private beta; free readiness check, no signupStart the free readiness check |
Verified 7 October 2026 against each vendor's own product and pricing pages (sources below). We deliberately do not restate anyone's prices here: when we re-checked the June 2026 figures this page used to carry, all but one had moved within two months, so the links above go to the live page instead. Check what a base tier includes as well as what it costs — engines are commonly sold as per-model add-ons. (S6S is our own product; we've described it on the same terms as the others.)
Which should you pick?
- Enterprise needing broad coverage — and with the budget for it — will likely be best served by Profound: a nine-engine roster, AI Marketer agents, and AI-traffic analytics. Plan for a sales conversation, though — after the free trial, the full roster is an Enterprise package.
- Teams already running their SEO on Semrush should look at Semrush's AI Visibility first: it sits in the same suite, can be bought on its own or bundled into the SEO + AI Search plans, and tracks the prompts you choose daily in ChatGPT, Google AI Mode and Gemini. Perplexity appears in its Brand Performance reports but not in daily prompt tracking — if Perplexity matters most to you, check that the feature you need covers it.
- Marketing teams and agencies who want solid analytics and reporting across the major engines should look at Peec AI, which is built around prompt- and model-level analytics and lets you choose your model set at onboarding.
- Small teams wanting the easiest, cheapest start will find Otterly.ai approachable — a low-cost Lite plan and a built-in GEO audit. Price its add-ons before you commit if you need Gemini, Google AI Mode or Claude, which are not in the base plan.
- Teams that want measurement they can trust and a governed fix loop are who we built S6S for: two separate scores (what engines actually say, kept apart from the readiness diagnostic), per-surface results rather than one blended number, human-in-the-loop drafts with matched before/after evidence, and a free readiness check to start. Note the coverage limit honestly: we measure ChatGPT, Gemini, Perplexity and Google's AI answers. Claude, Grok and Copilot are not part of a check today. We are narrower than the others on coverage today, and in invite-only private beta — if breadth is your first criterion, one of the tools above is the better buy.
Whichever you lean toward, ask for a sample report and verify which exact product surface, model, timestamp, failures, and raw evidence each vendor measures.
Sources & dates
- [1] Ahrefs: the 50 most-cited websites per AI engine — Brand Radar, US queries, September 2026 snapshot: YouTube is the #1 cited site in Google AI Overviews (22.9% of top-50 citations) but #8 in ChatGPT (2.5%); Reddit leads ChatGPT, Perplexity, Gemini and AI Mode. Shares are of the top 50 only; refreshed monthly · Sep 2026 · link
- [2] SiliconANGLE — Profound $96M Series C at $1B; Agents GA — Enterprise AEO platform; autonomous content Agents went GA same day · Feb 2026 · link
- [3] Profound pricing page — Re-verified on the vendor page and REWRITTEN: brands now get a free 7-day trial (ChatGPT, Gemini, Google AI Overviews) and a sales-led Enterprise tier with capability for up to nine engines — ChatGPT, Perplexity, Google AI Mode, Gemini, Microsoft Copilot, DeepSeek, Claude, Google AI Overviews and Exa Search. The self-serve Starter and Growth tiers this page described in August are gone; agencies have a separate self-serve Agency Growth plan. Grok is no longer listed · Oct 2026 · link
- [4] Semrush AI Visibility pricing and SEO + AI Search pricing pages — Added in the October 2026 review. Standalone AI Visibility plan per domain, or bundled into the SEO + AI Search plans; Enterprise is sales-led · Oct 2026 · link
- [5] Semrush help centre — AI visibility features, Getting started with the AI Visibility Toolkit, What is Semrush One — Engine coverage differs by feature: daily prompt tracking — 'select ChatGPT, Google AI Mode, or Gemini' (the Semrush One page lists AI Overviews in place of Gemini); Brand Performance — Google AI Overviews, AI Mode, ChatGPT, Perplexity and Gemini; Visibility Overview — ChatGPT, Gemini, Google AI Mode and AI Overviews. Perplexity is not offered for daily prompt tracking · Oct 2026 · link
- [6] Semrush blog — The 8 best AI visibility tools — Semrush's own statement that its Enterprise AIO tier adds Claude, DeepSeek, Grok and others; the Enterprise AIO page itself names no engines · Jul 2026 · link
- [7] Adobe — Adobe completes Semrush acquisition — Semrush has been part of Adobe since the deal closed · Apr 2026 · link
- [8] Peec AI pricing page — Re-verified on the vendor page: Starter / Pro / Advanced each track three models you choose, Enterprise chooses from all; additional models are paid add-ons; free trial. Monthly figures deliberately not restated — the vendor page does not render its prices to our fetcher, so we link out rather than quote a third party · Oct 2026 · link
- [9] Otterly.ai pricing page — Re-verified on the vendor page: base plans track ChatGPT, Google AI Overviews, Perplexity and MS Copilot — Gemini, Google AI Mode and Claude are paid add-ons (the June 2026 version of this page wrongly listed them as included). Lite / Standard / Premium plus Enterprise; free trial; GEO audit + prompt research on all tiers · Oct 2026 · link
Correlational figures (e.g. Ahrefs r-values) describe association, not causation, and come from single-vendor datasets — treat them as directional. We refresh this page quarterly as the engines and the evidence base evolve.
Check your public site — free
Run a deterministic technical snapshot of the public site S6S can fetch. It does not query ChatGPT, Perplexity, or Gemini and is not a visibility score.