Yes — AI engines almost certainly use your website, in one or both of two ways: as part of the training data models learned from, and as a page they retrieve live when answering a query. The question worth asking isn’t whether they use it, but how well your site serves both purposes.
The two ways AI uses your website
1. Training data
When AI models are built, they ingest a huge slice of the public web. If your site was crawlable and public, its content likely contributed to what models “know” — including about your brand and topic. This influence is durable but bounded by each model’s knowledge cutoff.
2. Live retrieval
Many engines now fetch live web pages to ground answers — Perplexity on almost every query, ChatGPT and Gemini when they browse, Copilot via Bing. When this happens, your current pages can be read and cited directly. This is fast-moving: publish today, influence answers soon.
How to tell if AI is using your site
- Check your crawler access. Review your
robots.txtand server logs for AI crawler user agents (GPTBot, PerplexityBot, Google-Extended, and others). See the AI crawlers guide. - Ask the engines. Pose questions your pages answer and see whether the engine cites you or reflects your content. If Perplexity cites your URL, it’s using your site.
- Look for your facts. If an engine repeats specific facts or phrasing that originate on your site, your content is in play.
How to make your website work for AI
- Stay crawlable. Don’t accidentally block beneficial crawlers; ensure key content renders without scripts retrieval can’t read.
- Answer questions clearly. Direct, well-structured answers are easier to extract and cite. See does ChatGPT cite websites.
- Publish attributable facts. Specific, sourceable data is the most citable content.
- Add an llms.txt. Give AI a curated map of your key pages — see what is llms.txt.
- Keep it fresh. Current content wins in retrieval-based engines.
A note on control
You can decide whether to allow AI crawlers (via robots.txt directives like Google-Extended and GPTBot), but blocking them means forgoing the visibility that comes with being used. Most brands benefit from being included and instead focus on making their content accurate, authoritative, and easy to use well.
Frequently Asked Questions
Do AI models train on my website?
If your site is public and crawlable, its content has likely contributed to AI training data, influencing what models know about your brand and topic. This effect is durable but limited by each model’s knowledge cutoff.
How do I know if AI crawlers visit my site?
Check your server logs and robots.txt for AI crawler user agents such as GPTBot, PerplexityBot, and Google-Extended. Their presence indicates AI systems are accessing your content.
Can I stop AI from using my website?
You can disallow specific AI crawlers in robots.txt (for example, GPTBot or Google-Extended). However, blocking them forfeits the visibility that comes from being included in AI answers, so weigh the trade-off carefully.
How do I make my website more useful to AI?
Keep it crawlable and fresh, answer questions directly and clearly, publish specific attributable facts, and add an llms.txt that maps your key pages. These make your site easier for AI to use and cite accurately.