The Best Free Tools for Checking Your AI Visibility

Start With What You Have

Before investing in any paid tools, there are several free resources that can tell you a lot about your AI visibility. Here is the recommended stack for getting started.

1. Bing Webmaster Tools (Free)

ChatGPT and Microsoft Copilot rely heavily on Bing's index per their public documentation. Other AI engines use different sources (Gemini uses Google's index; Perplexity runs its own PerplexityBot; Claude has its own retrieval). For ChatGPT and Copilot specifically, Bing Webmaster Tools is non-negotiable. Check your indexing coverage, crawl status, and any errors.

2. Google Rich Results Test (Free)

Test whether your schema markup is valid and complete. Schema.org validation matters across all AI engines. search.google.com/test/rich-results

3. Schema.org Validator (Free)

More detailed schema validation than Google's tool. Checks for completeness and correctness. validator.schema.org

4. Manual AI Engine Checks (Free)

The most direct method: ask each AI engine about your product category and see what comes back. Run the same prompt across the 6 major engines: ChatGPT (free tier), Perplexity (free tier), Gemini (free), Claude (free), DeepSeek (free), Mistral (free Le Chat). 15-20 minutes per week to track what each engine says about your category.

5. Google Search Console + Bing Webmaster Tools

Worth setting up both. Google Search Console covers search and AI Overviews retrieval. Bing Webmaster Tools covers ChatGPT and Copilot. Both are free. Sign up at search.google.com/search-console and bing.com/webmasters.

What to Check First

1. Is your site indexed by Bing? (Bing Webmaster Tools → Coverage)
2. Do you have Product / SoftwareApplication schema? (Rich Results Test)
3. Does your homepage answer "what is [your product]?" in the first paragraph?
4. When you ask each of the 6 AI engines about your category, does your tool appear?
5. When was the last time you updated your main product page?

When to Consider Paid Tools or Services

Free methods are sufficient for establishing a baseline. Once you have implemented the basics and want either ongoing monitoring or a deep human diagnostic, the options are: (1) commercial monitoring SaaS like Profound, Otterly, or Peec AI ($99-$5,000+/month for ongoing dashboards), or (2) one-shot human audit services like EurekaNav ($79) that read every engine response and write a prioritized fix list with verbatim engine quotes.

What We Removed From the Earlier Version

An earlier version of this post contained claims we could not source or that were factually incorrect. In the spirit of integrity, here is what we removed and corrected:

• Incorrect claim: "Most AI search engines use Bing's index" — only ChatGPT and Microsoft Copilot rely heavily on Bing. Gemini uses Google. Perplexity has its own PerplexityBot. Claude has its own retrieval. DeepSeek and Mistral use their own indexes. Corrected.
• Reference to retired "Sentinel Lite" product — Sentinel was killed in commit 13ee770 on 2026-04-27. Replaced with current paid options (Profound / Otterly / Peec AI) and EurekaNav one-shot audit.
• Reference to "Grok (free on X)" — Grok is not in our 6-engine coverage list. Replaced with Claude / DeepSeek / Mistral, which ARE in the 6-engine audit.

If you spot a remaining claim that lacks a source, email don@eurekanav.com — we will provide one or correct the claim within 24 hours.

Related reading

• Best AEO tools for SaaS founders 2026
• AEO agency alternative for SaaS founders
• AI visibility monitoring tools — what to track
• Monitor AI citations across 6 engines
• Linear — AI visibility teardown

Sources & references

Each external claim in this post links to a primary source. Where we cite our own observations, we disclose sample size (currently n=4 published audit teardowns plus broader audit work). For methodology details and our 6-engine scoring approach, see eurekanav.com/methodology.

• Asia Frost (HubSpot Senior Director, Global Growth) — HubSpot Grow 2026 talk — https://blog.hubspot.com/marketing
• Aravind Srinivas (Perplexity CEO) — vendor-disclosed metrics — https://www.perplexity.ai/hub
• Anthropic — official news (Claude / Dario Amodei) — https://www.anthropic.com/news
• EurekaNav methodology — https://www.eurekanav.com/methodology
• EurekaNav published audit teardowns (4 to date) — https://www.eurekanav.com/case-studies

If you spot a claim in this post that you cannot trace to a source above or to our methodology, email don@eurekanav.com — we will provide one or correct the claim within 24 hours.