The best free AI visibility checker tools (Top 10)

Free AI visibility tools are getting better, but they’re still very uneven.

Some are built to check whether your site is technically ready for AI search. Others are built to show whether your brand appears in AI-generated answers. Some are genuinely useful. Some give you a score and leave you to work out the rest.

That’s why this list is focused on lightweight tools and checkers, not audits or managed services.

We’ve put Tilio first, but we’ve tried to keep the ranking fair. In our view, Tilio is the best free starting point because it’s fast, clear and genuinely actionable. It gives most teams a better answer to “where should we start?” than tools that try to do too much in free form.

How we judged these tools

We’ve weighted four things most heavily.

First, is it actually a lightweight checker rather than a lead-gen page for an audit?

Second, is the free version genuinely usable?

Third, does it tell you something clear and useful?

And fourth, does it help you decide what to do next?

We’ve also paid close attention to engine coverage. This guide is built around Google AI Overviews, ChatGPT, Claude and Perplexity, so we’ve favoured tools that cover all four or get close.

The 10 best free AI visibility checker tools

1. Tilio AI Visibility Tool

Tilio is the strongest free starting point for most teams.

It’s built to answer a very practical question: is your site actually set up properly for AI search? The checker looks at the technical and structural signals that affect discoverability, including crawler access, robots.txt, metadata, structured data and page-level readiness. It then turns that into a clear score with practical next steps.

That’s what makes it useful. The output is easy to understand, the workflow is simple, and the recommendations are things a team can actually act on. If your question is “what should we fix first?”, Tilio is the best tool on this list.

If you want a free first step, use the <a href="/ai-checker">AI Checker</a>. If you want a more detailed written review after that, the next step is usually an <a href="/ai-visibility-audit">AI Visibility Audit</a>.

2. Ahrefs Free AI Visibility Checker

Ahrefs is one of the strongest free live visibility tools if you want a polished brand snapshot.

Its checker is built around how your brand appears in AI answers rather than technical site readiness. It shows mentions, top cited domains, top cited pages and topic visibility, and it feels very clean and easy to use. If you want a quick, credible view of how your brand is showing up across major AI environments, Ahrefs is one of the best options.

3. PromptAlpha AI Visibility Checker

PromptAlpha is one of the better free tools for live multi-engine brand visibility.

It’s built around how your brand appears across ChatGPT, Claude, Perplexity, Gemini and Grok, and it goes beyond a simple yes or no. It shows where your brand is mentioned, which competitors appear instead, which sources are being cited and how your visibility compares across engines. If your main question is “how are AI tools talking about us?”, PromptAlpha is a strong option.

4. Am I Visible on AI?

This is one of the cleanest no-signup tools in the category.

It checks whether ChatGPT, Claude, Perplexity and Gemini can find your website, then gives you a free score in around 30 seconds. It’s simple, lightweight and quick to run, which makes it a good fit if you want a fast first pass without much setup.

5. ConvertMate Free AI Visibility Checker

ConvertMate is a good choice if broad engine coverage matters most to you.

Its checker is positioned around ChatGPT, Perplexity, Gemini and Claude, and it feels more like a wide visibility sweep than a technical site scan. If you want a quick cross-engine read on how your brand or site looks across several major AI environments, it’s worth trying.

6. AI Brand Checker

AI Brand Checker is a useful tool if your main focus is brand presence rather than technical setup.

It checks visibility across ChatGPT, Claude, Perplexity, Gemini and Google AI, and returns a GEO-style score plus actionable insights. It’s a good fit for marketers who want a quick view of whether their brand is present in the answer layer, rather than a deeper technical diagnosis.

7. Search-visibility.ai

Search-visibility.ai is another lightweight checker built around brand mentions and AI search presence.

Its public positioning focuses on ChatGPT, Gemini, Claude and DeepSeek. It is less polished than some of the bigger names higher up this list, but it’s still useful if you want another quick brand-visibility view rather than a technical readiness scan.

8. Nest Content

Nest Content is a solid option if you want a simple domain-level visibility checker with some extra context.

It’s built around whether your domain appears in AI search results, with public coverage around ChatGPT, Perplexity and Gemini. It also includes citation tracking and competitor comparison, which makes it more useful than a basic score tool. It ranks slightly lower here because its public coverage looks less aligned with all four target engines, but it’s still worth trying.

9. llmclicks.ai

llmclicks.ai is one of the more commercially focused checkers on the list.

Its angle is less “general AI visibility” and more “are we showing up when people search for tools, services or providers in our category?” That makes it especially useful for teams that care about buyer-intent prompts, shortlist-style searches and competitor inclusion rather than broad visibility alone.

10. LLM GEO Kit AI Visibility Checker

LLM GEO Kit is one of the more technical tools in the group.

It focuses on AI search readiness across areas like robots.txt, structured data, metadata, content structure, citation readiness and extractability. It publicly says it checks visibility for ChatGPT, Gemini and Claude. It doesn’t cover the full four-engine brief as closely as some of the tools above, but it’s still useful if your priority is technical AI search readiness rather than live mention tracking.

Which free AI visibility checker should you actually use?

If you want the best free starting point overall, use Tilio.

That’s especially true if your real question is: are we set up properly for AI search, and what should we fix first? Tilio is the clearest and most actionable free checker in the group.

If you want more of a live brand-visibility snapshot, Ahrefs and PromptAlpha are strong options.

If broad engine coverage matters most, ConvertMate, AI Brand Checker and Am I Visible on AI are all worth trying.

And if your priority is commercial-category prompts rather than broad visibility, llmclicks.ai is more useful than its name might suggest.

The bigger point is that “AI visibility checker” can mean very different things. Some tools are checking whether AI systems can access and understand your site. Others are checking whether your brand appears in AI answers. Both are useful, but they aren’t solving the same problem.

If you’re newer to that distinction, our guide on how to get found in AI search explains the wider picture.

FAQs about free AI visibility checker tools

What is an AI visibility checker?

An AI visibility checker is a lightweight tool that helps you understand whether your site or brand is discoverable in AI search. Depending on the tool, that might mean technical readiness, live brand visibility or a mix of both.

Which free checker is best for Google AI Overviews, ChatGPT, Claude and Perplexity?

If you want the best overall free starting point, Tilio is the strongest option. If you want broader live-engine checking, tools like PromptAlpha, ConvertMate, AI Brand Checker and Am I Visible on AI are all worth trying as well.

Are free AI visibility checkers enough on their own?

They’re enough for a baseline, but usually not enough for ongoing management. A free checker can help you spot technical gaps or get a quick visibility snapshot. If you need competitor benchmarking, deeper prompt testing and a more structured action plan, you’ll usually need something beyond the free layer.