Best GEO (Generative Engine Optimization) Tools for 2027

The best GEO tools (generative engine optimization tools) change your site. Trackers only report on it. Most "best GEO tools" lists are really lists of AI visibility trackers, which tell you whether ChatGPT mentions you but don't fix anything. To actually get cited, you need a small stack that covers six jobs: letting AI crawlers in, publishing an llms.txt file, adding schema, writing pages that can be quoted, covering the topics AI expects, and finding the sources AI already trusts. Almost all of that can be done for free.

We make one of the paid tools on this list, and several of the free ones are ours. Read those sections with that in mind. Where we fall short is spelled out near the end.

How did we pick and price these?

We started by reading what already ranks for "generative engine optimization tools" and "best GEO tools" on 9 November 2026. Nearly every result was a list of trackers: Profound, Peec AI, Otterly and their cousins, each priced by how many AI prompts it watches. One of the better lists sorted tools into tracking, creating and refreshing content. None of them sorted tools by the technical work that decides whether an AI engine can read a site in the first place.

So this list is built around that work. We only included a tool if it changes something an AI engine reads: your robots.txt, your llms.txt, your structured data, your page copy, or the sources that mention you. Trackers get one short section at the end, because we cover them properly in a separate post. If a tracker is what you came for, here are the entry prices from our AI visibility tools comparison:

Every price below comes from the vendor's own pricing page or docs, checked on 9 November 2026, in US dollars as published. Where a vendor only shows a yearly-billed monthly price, that's the figure we quote, and we say so. Prices in this category change often, so check before you buy.

Why sort GEO tools by stage instead of by brand?

Because most sites fail at the early stages, and no tracker will tell you that. When we audited 226 small-business websites this summer, half of the sites we checked had no llms.txt file, 22% had no structured data at all, and 38% of the homepages we could check had no headings written as questions. Those numbers are from our AI search readiness study, and the pattern was clear: sites were losing long before anyone asked an AI about them.

A tracker would have shown those sites a score of zero. It wouldn't have said why. Sorting the tools by stage lets you fix the cheapest, most common problems first and only pay for the expensive tools once the basics are done.

Five of these free tools are ours; the alternatives in each stage work just as well.

Stage 1: Can AI crawlers actually reach your site?

This is the first thing to check, because a blocked crawler makes everything after it pointless. AI engines send their own bots, separate from Googlebot, and a site can rank well on Google while quietly refusing every one of them. It often happens by accident, through an old robots.txt rule or a security setting someone switched on years ago.

Cloudflare AI Crawl Control (included on all plans)

If your site runs through Cloudflare, AI Crawl Control is where you set the rules. Cloudflare's docs say it's available on all plans, and it shows which AI services visit your site and lets you allow or block each crawler. On the free plan it identifies crawlers by user agent only and keeps 24 hours of metrics, which is enough to answer "are they getting in?" but not much more. If you're not on Cloudflare, or you want a check from outside your own setup, use the checker below.

RankAgent AI Crawler Checker (free)

Our AI crawler checker reads your robots.txt against 14 AI bots, including OpenAI's GPTBot and OAI-SearchBot, PerplexityBot, Anthropic's ClaudeBot, Google-Extended, Applebot-Extended and Common Crawl's CCBot. It separates bots that fetch pages for live answers from bots that collect training data, since you might reasonably want one and not the other.

It also does something a robots.txt reader can't. It requests your page as GPTBot, ClaudeBot and PerplexityBot, then compares that with a normal browser visit. If the browser gets through and GPTBot gets a 403, your server or firewall is blocking AI even though your robots.txt says it's welcome. That's the case people miss most, because the file looks fine.

Stage 2: Does your site explain itself to AI?

An llms.txt file is a short, plain-text summary of your site that points AI tools at your most important pages. It's a proposal published by Jeremy Howard in September 2024, not an official standard, so treat it as cheap insurance rather than a ranking lever. We wrote up what llms.txt is and whether you need one if you want the honest case for and against. Half the sites in our study didn't have one, and it takes minutes to add.

Yoast SEO and Rank Math (free)

If the site runs on WordPress, you probably already have an llms.txt generator. Yoast's own feature page says llms.txt is "built into Yoast, free for everyone", and it's been in the plugin since version 25.3, with manual page selection added in 25.6. Rank Math's free plugin has an llms.txt module too. The trade-off is control. Plugin files can be thin, so open yours and check it lists the pages you'd actually want an AI to read.

RankAgent llms.txt Generator (free)

Our llms.txt generator scans your homepage, menu and sitemap, pulls up to 24 real pages, and drafts the file from them, skipping login, cart and legal pages that don't belong there. It also validates a file you already have. Use it on any site that isn't WordPress, or when you want to see what a good file looks like before trusting a plugin's version.

Stage 3: Do machines know what your business is?

Structured data, or schema, is a set of labels in your page code that tells machines "this is a local business, here's its address, here's its phone number." AI engines and Google both read it. It's one of the clearest signals you can send, and 22% of the sites we audited sent none.

Google Rich Results Test and Schema Markup Validator (free)

Google's Rich Results Test checks a live page and shows which rich results its structured data could produce. The Schema Markup Validator checks the markup against schema.org itself, including types Google doesn't show as rich results. Run both on every page with schema: the first tells you what Google will use, the second tells you whether the markup is valid at all. Neither one writes the schema for you.

RankAgent Schema Generator (free)

If you'd rather not write the code by hand, our schema generator writes JSON-LD (the format Google recommends) for Organization, LocalBusiness, Product, Article, FAQ and Breadcrumb pages, checked against the fields Google requires. It also helps you add the sameAs links that connect your site to your social profiles and listings, which is how a machine works out that all of them are the same business.

Stage 4: Are your pages written to be quoted?

AI engines answer questions by lifting a sentence or two out of a page. Pages that answer a question directly, under a heading phrased the way a customer asks it, get lifted. Pages that open with three paragraphs of warm-up don't. This is the stage where paid tools start to earn their keep, because doing it by hand across a whole site is slow.

Frase (from $39 a month, billed yearly)

Frase has moved furthest toward GEO of the content tools. Its Starter plan is $39 a month on yearly billing ($468 a year) and includes SEO and GEO scores, plus AI visibility tracking on ChatGPT and Google's AI for 20 prompts. Professional, at $103 a month billed yearly, adds Perplexity and monitoring of AI crawler visits. There's a 7-day free trial with no card required.

What you get is a writing tool with a GEO score built in. That's useful if you or your team write a lot of content. It's overkill if you publish twice a month.

Surfer (from $49 a month, billed yearly)

Surfer's Discovery plan is $49 a month billed yearly and includes 120 content documents with what Surfer calls "AI SEO optimization guidelines". Standard, at $99 a month billed yearly, lists one-click content optimization and tracks 25 AI prompts weekly, on ChatGPT only. Surfer is built for content teams that already work inside a content editor all day. If that's not you, Frase's GEO score is the more direct fit for this job.

You can do a lot of this stage without either tool. Rewrite each important page so its first sentence answers the question in its heading. That single habit does a lot of what a content tool would prompt you to do.

Stage 5: Are you covering the topics AI expects?

An entity is a specific thing a machine can recognise: a brand, a place, a product type, a procedure. When an AI decides which page best answers "how much does a root canal cost in Pune?", it looks for pages that mention the things a full answer would include. A page that skips half of them looks thinner than its competitors, even if it's well written.

InLinks (free plan; paid from $49 a month)

InLinks builds a map of the entities on your site and uses it to add internal links and schema automatically. Its homepage lists a free plan, a Freelancer plan from $49 a month and an Agency plan from $196 a month, all billed monthly. Every account includes the internal-link and schema automation. It's the most hands-off option at this stage, and the one to look at if you manage several content-heavy sites.

Google Cloud Natural Language API (first 5,000 units a month free)

This is the tool for checking which entities Google itself finds in a piece of text. Paste a paragraph and it returns the entities it recognised and how central each one is. Google's pricing gives the first 5,000 units of entity analysis free each month (a unit is up to 1,000 characters), then $1.00 per 1,000 units. It needs a Google Cloud account, so it's for the technically curious, but it's the closest thing to seeing a page the way a machine does.

RankAgent Entity Gap Analyzer (free)

Our entity gap analyzer compares your page with a competitor's page, not just the two homepages, and lists the topics they cover that you don't. Every gap is then checked against the real text on both pages. If the competitor never actually uses the term, we drop it, and you see the counts ("they mention it 7 times, you 0"), so you're working from a measurement rather than a guess.

Stage 6: Which sources does AI already trust for your topic?

AI answers lean heavily on a small set of third-party pages: review sites, directories, comparison posts, forum threads. If you're not on those pages, you're usually not in the answer. This stage is about finding them so you can get listed, reviewed or mentioned there.

Perplexity, asked by hand (free)

The simplest way to find these pages is to ask Perplexity the question your customer would ask. It lists the sources it used under every answer. Do that for five or six buyer questions, note which sites keep coming up, and you have the start of an outreach list. It's slow across many questions, and it only shows you one engine.

RankAgent Citation Finder (free)

Our citation finder does the same job faster. It asks Perplexity a buyer's question live and shows exactly which pages its answer cited, how often it leaned on each one, and what type of page each is. That's a ready-made outreach list. It has the same limit as doing it by hand: it asks one engine, Perplexity, and if the live search is unavailable it says so instead of guessing.

What about the AI visibility trackers?

Trackers answer a different question: after all this work, does AI actually mention you, and is it getting better? That matters, and it's where Profound, Peec AI, Otterly and the rest compete. We've compared nine of them, with prices, in our post on the best AI visibility tools.

Our advice is to fix stages one to three before paying for one. A tracker on a site that blocks GPTBot will just show you a flat line every week. If you want a one-off reading first, our free AI visibility checker asks Perplexity three buyer questions and ChatGPT one, live, and shows whether they recommend your business.

RankAgent: where we fit, and where we don't

RankAgent runs most of the checks above on every client site and turns what it finds into fixes. The site audit flags blocked AI crawlers, a missing llms.txt and missing or broken schema. It also checks whether content pages have question-style headings, an author, direct answer blocks, original data and comparison content, which are the things Stage 4 tools score. "Fix This" writes the fix for the technical issues (robots.txt, llms.txt, schema, titles and descriptions), and every paid plan includes an AI visibility check on Perplexity and ChatGPT.

Starter is $29 a month for one site, Growth is $59 a month for three client sites with white-label reports, and Agency is $119 a month for ten. Paying yearly gets two months free. (In India it's ₹2,499, ₹4,999 and ₹9,999 a month.)

We're not the right tool for everything here. We don't write long-form content for you the way Frase and Surfer help you draft it, and we don't insert internal links site-wide the way InLinks does. We don't manage crawler rules at the network level like Cloudflare. And if all you need is daily AI tracking across many engines, a dedicated tracker will go deeper than our check.

Where we're different is that the whole workflow lives in one client project, and it ends in a report under your agency's logo that you can send every month. You can open the live sample report without signing up to see what a client would receive, or read how we approach GEO for agencies.

Which GEO tools should you actually start with?

If you have no budget, you can cover every stage for free: our crawler checker, Cloudflare if you're already on it, an llms.txt from our generator or your WordPress plugin, schema from our generator tested in Google's Rich Results Test, and our entity gap analyzer and citation finder for the content and outreach work. That's a real GEO stack, and it costs nothing but time.

If you write a lot of content, add Frase. Its GEO score is the most direct paid help for Stage 4, and $39 a month is a small bill against the time it saves. If you look after several content-heavy sites and want internal links handled for you, InLinks is worth a trial.

If you're a freelancer or small agency doing this for clients, the work is running all six stages on every client, every month, and showing the client what changed. That's what we built RankAgent for. Every new account gets a 14-day free trial of Growth with one client site, no card needed.

Frequently asked questions

What are generative engine optimization tools?

Generative engine optimization tools help your site get cited in AI answers from ChatGPT, Perplexity and Google's AI. Some change your site, by fixing crawler access, adding llms.txt and schema, or reshaping content. Others only track whether AI mentions you. You need the first kind before the second is worth paying for.

What are the best GEO tools for a small budget?

Free ones cover most of the work. Check crawler access with a free AI crawler checker, generate llms.txt and schema with free generators or your WordPress plugin, and test the schema in Google's Rich Results Test. Pay for a content tool like Frase only once those are done.

Do I need a GEO tool if I already use an SEO tool?

Often not for the basics. Good SEO tools already check schema and page structure. What they usually miss is AI crawler access, llms.txt and whether AI engines mention you. Check those three specifically before buying anything new.

Is llms.txt worth adding?

It's worth the few minutes it takes, but don't expect it to move results on its own. It's a 2024 proposal, not an official standard. A site with blocked crawlers or no schema will gain far more from fixing those first.

How do I know if GEO work is paying off?

Re-check the same buyer questions in AI engines after each round of changes, and watch for AI referral traffic in your analytics. A free one-off check works at first. A tracker earns its cost once you're reporting results to clients every month.