The Best LLM Visibility Checkers Without Paywall

Buyers now ask ChatGPT, Gemini, and Perplexity for a shortlist before they ever open Google. A free LLM visibility checker is how you find out whether your brand makes that shortlist, without signing up for monitoring software first.

What these tools actually are

An LLM visibility checker is a small, single-purpose tool that answers one question: does a chatbot mention your brand when someone asks it a buyer-style question. You type in a domain or company name, the tool runs a prompt (or checks a pre-built index of prompts) against one or more AI engines, and it shows you whether you showed up, where you ranked, and who showed up instead.

That is very different from a full AEO or GEO platform. Platforms like Ahrefs Brand Radar, Semrush's AI Visibility Toolkit, or Serplock track this stuff continuously: hundreds of prompts, run on a schedule, across every major engine, with historical trend lines, competitor share of voice, and alerts when something changes. They are built for ongoing monitoring, and they charge for it.

A checker is the opposite. It is a single snapshot, run once, for free, with no login. You lose the history, the prompt volume, and the alerting, but you get an honest read of where things stand right now, in under a minute, without talking to sales. Think of it as the difference between a blood pressure cuff at the pharmacy and a cardiologist. One tells you if something is worth investigating. The other actually treats you.

This is a ranked list of checkers and graders you can finish at no cost, with the result shown right on the page. Each entry covers what the tool measures, who it is built for, and where it falls short. SerpRankings is powered by Serplock's GEO engine, which is why it sits at number one for a no-email ChatGPT category check, not because it covers every engine that exists.

Every tool below shows its result on the page. No credit card, no paid unlock, and no email gate. Paid trackers, priced reports, and checkers that email you the result later belong to a different category and are not included here.

The top free LLM visibility checkers at a glance

1. SerpRankings

If the question you care about is 'does ChatGPT already recommend us in our category', start here. The SerpRankings AI Visibility Checker takes a domain, looks it up against a weekly index of over 200 software categories, and tells you whether ChatGPT ranks that brand, in which categories, and at what position.

That mirrors how software buyers actually ask ('best CRM for agencies') far more closely than a generic 'tell me about this company' prompt would. There is no account and no email required. Results come back in seconds because the heavy lifting happens in the weekly index, not in a live scrape of whatever prompt you type.

Where it earns the top spot is specificity. Most of the checkers further down this list treat 'visibility' as one broad, generic question asked once. SerpRankings treats it as a category problem, the same way you'd think about SEO rankings. You don't just learn that ChatGPT knows your brand exists. You learn whether it puts you in the room when a buyer asks for the 'best' option in your space, and exactly where you land against the names it picks instead. For a software company, that's the number that actually matters, since almost nobody asks a chatbot to 'tell me about Acme Inc.' They ask it to solve a problem and expect a shortlist back.

A few reasons it's worth running first, before any of the multi-engine tools:

• It's built around real buyer intent. The index is modeled on how people phrase software-shopping prompts, not on brand-name lookups, so a good result here is closer to a real sales signal.
• You get a position, not just a mention. Knowing you're mentioned is step one. Knowing you rank third behind two specific competitors is what you can actually act on.
• The index refreshes weekly. Rankings in ChatGPT move as content, reviews, and citations shift. A weekly rebuild means the result you see is closer to current than a one-off crawl run whenever you happen to visit.
• It takes one field and a few seconds. Domain in, result out. No account creation, no waiting in a queue, no email to check later.
• It's a clean starting point for a bigger workflow. If SerpRankings shows a gap, you already know exactly which category to go fix, before you spend anything on a monitoring platform.

The trade-off is scope: it does not cover Gemini, Perplexity, Claude, or Google AI Overviews, and it won't run a custom prompt you write yourself. If you need those, keep reading. SerpRankings runs on Serplock's GEO engine, so factor that into how you read the recommendation, but if you sell software and want the fastest, most honest read on where you stand in ChatGPT's shortlists, this is the one to run first.

Best for Software brands that want a ChatGPT category rank with no signup.

Engine: ChatGPT, via a weekly software-category index.

Email: Not required. The result is on the page.

Limit: Not a live custom-prompt checker, and not multi-engine.

2. Ahrefs AI Visibility Checker

Ahrefs' free AI Visibility Checker is the fastest way to see whether a brand name shows up across several answer engines at once. You type the brand the way a buyer would say it, not the legal entity name, and Ahrefs queries ChatGPT, Gemini, Perplexity, Copilot, Google AI Overviews, and Google AI Mode with search-backed prompts.

The report is a preview: mention count, a per-engine split, and the top five topics, cited domains, and cited pages. That truncation is the trade-off for keeping the checker free and unlimited, with no signup. It is still enough to spot a gap, like showing up in Perplexity but missing from ChatGPT entirely.

Ahrefs Brand Radar is the paid monitoring product, and it is a separate thing from this checker. Use the free URL for a one-pass, no-email read. Move on to Brand Radar if you need history, share of voice, or custom prompts run every week.

Best for A no-account snapshot across ChatGPT, Gemini, Perplexity, Copilot, and Google AI.

Engines: ChatGPT, Gemini, Perplexity, Copilot, AI Overviews, AI Mode.

Email: None.

Limit: Top five items per section. Full history sits behind paid Brand Radar.

3. Semrush AI Search Visibility Checker

Semrush's AI Search Visibility Checker draws on the same data family as its paid AI Visibility Toolkit, but the free URL does not require an account. Enter a domain, run the check, and get an AI visibility score out of 100, mention and citation counts, a per-platform split, estimated audience reach, top cited pages, and a competitor comparison.

That combination is useful when you need a number to put on a slide, not just a yes or no. Semrush allows three free checks per day without registering. After that, you either wait or move into paid territory, which this list does not cover.

Coverage spans ChatGPT, Gemini, Google AI Mode, and AI Overviews. It is built from an index snapshot, so your own live ChatGPT conversation might not match it line for line. Treat the score as a pattern worth noticing, then confirm with a live checker if it looks off for your niche.

Best for A scored report plus competitor comparison without creating an account.

Engines: ChatGPT, Gemini, AI Mode, AI Overviews.

Email: None. Capped at three checks per day.

Limit: Prompt tracking and the full toolkit are paid and not covered here.

4. HubSpot AEO Grader

HubSpot's AEO Grader (also called the AI Search Grader) does not rank you in a category. It asks ChatGPT, Perplexity, and Gemini how they characterize your brand, then scores sentiment, presence quality, brand recognition, share of voice, and market position into a total out of 100, along with a written summary of the result.

You enter company name, location, industry, and product. There is no account field on the public grader. That makes it the right tool when the question is 'do these models even know who we are, and do they speak well of us', which is a different job from 'what position do we hold in ChatGPT for project management tools'.

The ChatGPT and Gemini answers here lean on training-data style characterization, while Perplexity is more live-search flavored. HubSpot AEO, the paid monitoring product, is a separate tool from this grader. Do not mix the two when you're briefing a client.

Best for A perception score before a pitch or a content reset.

Engines: ChatGPT, Perplexity, Gemini.

Email: None on the public form.

Limit: One-pass diagnostic, not a weekly rank tracker.

5. Geoptie AI Visibility Checker

Geoptie's AI Visibility Checker runs live prompts across ChatGPT, Claude, Perplexity, and Gemini and reports whether your brand is mentioned and who shows up instead. You enter a domain. No account, no credit card, and results come back almost instantly.

Live queries matter when an index snapshot feels stale or too generic for your niche. The trade-off is a smaller prompt pack than a paid tracker would run, so treat the score as directional rather than final. Re-run it later if a single answer looks unusually lucky or unlucky. Geoptie also sells a dashboard product, but this list only covers the free checker URL.

Best for A live mention check that includes Claude, not only OpenAI and Google.

Engines: ChatGPT, Claude, Perplexity, Gemini.

Email: None.

Limit: A snapshot, not history. Paid Geoptie tracking is a separate product.

6. ClearRank

ClearRank's free AI visibility checker is built for B2B teams who want to read the actual answers, not just see a score. You enter a domain, confirm or edit buyer-style questions, wait about three minutes, and see whether ChatGPT, Perplexity, Gemini, Claude, and Google AI Overview mention you, along with competitors and citations where the engine provides them.

ClearRank states there is no email and no password required. It's worth confirming the live form still matches that before you send it to a client, since lead-gen checkers do change over time. If the form stays open, this is one of the fuller free live scans on the list.

Best for Reading full engine answers side by side, including Claude and AI Overviews.

Engines: ChatGPT, Perplexity, Gemini, Claude, Google AI Overview.

Email: None, per the vendor.

Limit: Takes a few minutes to run. Recheck the form if an email field ever appears.

Setting up Bing Webmaster for AI Performance

Bing Webmaster Tools AI Performance is free once your property is verified. It shows how often your URLs get cited in Microsoft Copilot, Bing AI summaries, and some partner experiences: citation counts, cited pages, grounding queries, and trend over time. It is not a competitor brand lookup, and it doesn't touch Perplexity or Google AI Overviews. You'll need a Bing account, not a credit card.

Separately, isvisible.ai and similar crawler checks tell you whether GPTBot, ClaudeBot, and friends can actually fetch your site. A blocked crawler and a missing ChatGPT mention are two different problems. Run the access check if you control the domain, then come back to the mention checkers above.

When to switch from a checker to a tool

Used well, a free checker answers three questions in a few minutes each: are we mentioned at all, roughly where do we rank against known competitors, and does the model even describe us correctly. That's genuinely useful before a pitch, before a content sprint, or as a gut check when a client asks 'are we in ChatGPT yet'. Run two or three of the tools above on the same domain and you'll get a decent triangulated read, since no single free tool covers every engine.

Where they stop being enough:

• You need history, not a snapshot. A single result tells you nothing about whether you're trending up or down. Every checker here is a point-in-time read.
• You need more than a handful of prompts. Real buyers ask dozens of variations of the same question. Free tools sample a handful; paid platforms run hundreds on a schedule.
• You need alerts. If the job is to know the moment a competitor overtakes you in an AI answer, nothing on this list will tell you. That requires continuous monitoring.
• You need to act on citations, not just count them. Platforms like Serplock, Brand Radar, or the Semrush toolkit tie visibility back to specific pages and content gaps you can fix. Checkers mostly stop at 'you were mentioned' or 'you weren't'.
• You're reporting to a client or exec on a recurring basis. A one-off score doesn't hold up in a monthly report. You'll want a dashboard that updates itself.

If a free snapshot comes back empty across two or three checkers, you don't have a tracking problem yet. You have a presence problem: unclear positioning, thin third-party mentions, or crawlers that can't read your site in the first place. Fix that before you pay for a platform to monitor it.