Best Free AI Visibility Checkers (2026)

Last updated: November 2026

The best free AI visibility checkers in 2026 are TrendlyAI's free check, Ahrefs' AI Visibility Checker, Semrush's AI Search Visibility Checker and HubSpot's AI Search Grader. None need a signup. Each one measures something different, from live answers to a prompt database to model training data, so the results will not match.

Key takeaways🔗

• Free checkers fall into three groups: live prompt runs, lookups in a pre-built prompt database, and tests of what a model "knows" from training data.

• No-signup options in October 2026: TrendlyAI, Ahrefs, Semrush (3 checks a day) and HubSpot. LLM Pulse's checker is free but asks for an email.

• A free check is a snapshot. AI answers change between runs, so treat one result as a starting point, not a verdict.

• For ongoing tracking without paying, free trials from TrendlyAI, Otterly, Profound, LLMrefs, Frase and AgencyAnalytics run 7 to 14 days.

• We build TrendlyAI, so weigh that. Every competitor detail below was checked on the vendor's own site in October 2026.

What does a free AI visibility checker actually check?🔗

A free AI visibility checker tells you whether AI engines mention your brand, but the method behind it varies a lot. This matters more than the brand of the tool, because it decides what the result means:

• Live prompt runs. The tool sends a handful of real questions to ChatGPT, Perplexity or another engine right now and reads the answers. This is closest to what a buyer sees today, but a small sample.

• Database lookups. The tool searches a large set of prompts it has already run and stored. You get more coverage, but the prompts are the vendor's, not yours, and the data can be days or weeks old.

• Training-data tests. The tool asks models what they know about your brand without web search. This shows brand recognition, not whether you get recommended when a buyer asks a live question.

If you want the background on what "visibility" means here, our explainer on what AI search visibility is covers it.

Which free AI visibility checkers are worth using?🔗

These are the free checkers we verified on each vendor's own page in October 2026. TrendlyAI is listed first because we build it, so weigh that.

1. TrendlyAI free check🔗

TrendlyAI's free check runs 5 prompts on ChatGPT and Perplexity and shows whether your brand is named, with no signup, in about 30 seconds. It is a live prompt run, so you see real answers to category questions, plus the competitors that were named instead of you.

Limits: 5 prompts and 2 engines. It does not check Claude or Google AI Overviews in the free version (the paid plans add both), and it does not cover Gemini, Grok, Copilot or Google AI Mode at all. One run is one sample, so a second run can differ. The paid product scans weekly with 1 sample per prompt per engine, starts at $19/mo, and has a 7-day free trial with no credit card.

2. Ahrefs AI Visibility Checker🔗

Ahrefs' free AI Visibility Checker shows how your brand appears across ChatGPT, Gemini, Perplexity, Copilot, Google AI Overviews and AI Mode, with no signup. It is a database lookup: results come from Ahrefs' Brand Radar data, which Ahrefs says is built from search-backed prompts rather than questions you write.

Limits: the free report shows the top 5 results per section (top 5 topics, top 5 cited domains, top 5 cited pages). You cannot enter your own prompts. Ongoing tracking needs the paid Brand Radar product. It is strongest for brands big enough to appear in a large prompt set; small or local brands may see little data.

3. Semrush AI Search Visibility Checker🔗

Semrush's AI Search Visibility Checker reports an AI Visibility Score from 0 to 100, total mentions, a per-platform breakdown, top cited pages and a competitor comparison. It covers ChatGPT, Gemini, Google AI Mode and Google AI Overviews.

Limits: Semrush says you can use it three times per day without an account. It does not list Perplexity or Claude. Like Ahrefs, it reports on Semrush's own prompt data rather than prompts you choose. Daily prompt tracking on paid Semrush plans starts with the Starter plan ($199/mo billed monthly, as of October 2026).

4. HubSpot AI Search Grader🔗

HubSpot's AI Search Grader scores what ChatGPT (via GPT-5.4 mini), Perplexity and Gemini say about your brand, across sentiment, presence quality, brand recognition, share of voice and market competition. HubSpot says it is a free, one-time check with no account required, and results are ready in under two minutes.

Limits: HubSpot describes the analysis as based on the models' training data, so it measures how well models know you, not whether a live, web-connected answer recommends you. It is a one-time snapshot. For ongoing tracking, HubSpot sells HubSpot AEO at $50/mo, or $45/mo billed yearly, for 25 prompts on ChatGPT, Perplexity and Gemini, per its product page as of November 2026. Our TrendlyAI vs HubSpot AEO Grader comparison covers both.

5. LLM Pulse Brand Mention Checker🔗

LLM Pulse's Brand Mention Checker runs a sample of category prompts across ChatGPT, Perplexity, Google AI Mode, AI Overviews and Gemini and shows where you are mentioned, cited or missing. It includes sample responses.

Limits: it asks for your email, and submitting subscribes you to the LLM Pulse newsletter (you can unsubscribe). You get one free report per email, in around two minutes. The exact number of prompts is not stated.

How do the free checkers compare?🔗

Which free trials let you track AI visibility for longer?🔗

A free trial is the next step when a one-time check is not enough and you want to watch results over a week. These trials were listed on each vendor's site in October 2026:

Note that a 7-day trial on a weekly-scan tool gives you one full scan, while a daily-scan tool gives you seven. That is a real difference if you want to see how much answers move day to day. Our post on tracking ChatGPT performance over time explains why repeated samples matter.

How do you get the most out of a free check?🔗

Run the check, then repeat a few prompts by hand. Open ChatGPT, Perplexity and Google, ask the same buying questions your customers ask ("best payroll software for a 20-person company in Texas"), and note who gets named. This costs nothing and tells you whether the checker's result matches what a buyer would see.

Write down the competitors that show up instead of you. That list is more useful than any single score, because it tells you whose pages, reviews and Reddit threads the engines are drawing from. Our guide to competitor AI visibility analysis shows how to turn that list into a plan.

Do not over-read one result. AI answers vary between runs, and different checkers use different prompts, engines and methods, so a low score from one tool and a higher one from another can both be fair. When I set up TrendlyAI's own tracking, our domain scored low, and we publish that score. A low first number is normal. What matters is whether it moves after you publish fixes. The GEO audit checklist lists what to fix first.

For the bigger picture on getting recommended, start at our GEO hub. When you are ready, run the free TrendlyAI check: no signup, about 30 seconds, 5 prompts on ChatGPT and Perplexity.

Frequently asked questions🔗

Is there a free AI visibility checker with no signup?🔗

Yes. As of October 2026, TrendlyAI's free check, Ahrefs' AI Visibility Checker, Semrush's AI Search Visibility Checker (3 checks per day) and HubSpot's AI Search Grader all run without an account. LLM Pulse's checker is free but asks for an email.

Why do free AI visibility checkers give different results?🔗

They measure different things. Some run live prompts, some look up a stored prompt database, and some test what a model knows from training data. They also check different engines and different questions, so their scores are not comparable with each other.

Can a free checker track my AI visibility over time?🔗

Not really. Free checkers give a one-time snapshot. To track changes week to week, you need a paid tool or a free trial. Several vendors, including TrendlyAI, Otterly and LLMrefs, offer 7-day trials with no credit card.

Which free checker covers Google AI Overviews?🔗

Ahrefs, Semrush and LLM Pulse include Google AI Overviews in their free checkers. TrendlyAI's free check covers ChatGPT and Perplexity only; its paid plans add Google AI Overviews and Claude.

How accurate is a free AI visibility check?🔗

It is accurate for the prompts and moment it ran, and not much beyond that. AI answers change between runs, so use a free check to spot obvious gaps, such as a competitor named in every answer while you are never named, rather than as a precise score.

Related reading🔗

• How to track brand mentions in ChatGPT, Perplexity and Google

• AI visibility score explained

• Best AEO tools for answer engine optimization (2026)