Be the source Perplexity cites about you.
Perplexity searches the web and shows the pages it used. When its answer about your business is wrong, a cited page usually is too. The fix is to make your own website the clearest source. FactHound helps with that. It does not query Perplexity for you.
How Perplexity finds facts about a business
Perplexity searches the web, reads the pages it finds and writes an answer with links to them.
Perplexity documents two crawlers: PerplexityBot, which indexes pages so they can appear in its results, and Perplexity-User, which fetches a page when a user’s question needs it.
Because the sources are shown, you can audit an answer yourself: find the cited page with the wrong fact. Often it is an old page on your own site or an out-of-date listing.
Reviewed October 11, 2026. AI platforms change how they work often. Check each company’s own documentation before you rely on the details.
What FactHound does today
It checks crawler access.
The free check tells you if your robots.txt blocks PerplexityBot or Perplexity-User.
It finds your own contradictions.
FactHound flags pages on your website that disagree with your verified facts. Those are the pages most likely to be cited with the wrong answer.
It checks what a crawler can read.
The free check reads your homepage without running JavaScript, because you can’t count on an AI crawler running it, and shows which facts are missing.
It publishes the source.
FactHound puts your verified facts on your own website as schema.org structured data and gives you an llms.txt fact file.
What it doesn’t do
- FactHound does not send questions to Perplexity. In the Simulator, the Perplexity option is an approximation answered by an OpenAI model, and it is labelled that way.
- It doesn’t track which pages Perplexity cites or how often it cites you.
- It can’t change pages you don’t control, such as directories and review sites.
Audit a Perplexity answer yourself
- Ask Perplexity the question a customer would ask.
- Open each source it lists.
- Note every page with a wrong fact.
- If the page is yours, fix it. If it is someone else’s, ask them to correct it.
- Make sure your own site states the right fact plainly, then ask again in a few weeks.
Where a wrong citation starts
Linden Dental Care (made-up)
Question: “Is Linden Dental Care open on Saturday?”
What your contact page says
Closed Saturdays and Sundays.
Your verified fact
Saturday: 9am–1pm.
FactHound flags it: Your contact page disagrees with your verified Saturday hours. Fix the page, so the source an AI tool reads is right.
This is an illustration with a made-up business. It is not a real customer or a recorded AI answer.
Three platforms, three ways of finding facts
No single test covers every AI assistant. FactHound publishes one set of verified facts that all three can read, and checks each platform in the way that is possible today.
| Platform | Where its answers come from | What FactHound does today |
|---|---|---|
| ChatGPT | What its model learned in training, plus web search with linked sources when search is used. | Live answers from an OpenAI model with web search in the Simulator (Pro and Agency). Crawler access checked in the free check. |
| Perplexity | Web search, with links to the pages it used. | Crawler access checked in the free check. No live Perplexity answers: the Simulator’s Perplexity option is a labelled approximation. |
| Google AI Overviews | Google Search: its index and the facts Google holds about businesses, summarized by Gemini models. | Structured data published and checked. A Gemini model with Google Search in the Simulator (Pro and Agency). FactHound does not read AI Overviews. |
Questions, answered.
Start with the free check
No signup. Enter your website to see whether AI crawlers can read it and which questions it can’t answer.
Run the free check