9. Which AI engines can actually reach you
What this is
“AI” is not one thing. The same site can be readable by one engine and invisible to another, and the reason differs per vendor — blocking one company’s user-fetcher costs you nothing, blocking another’s may reduce your visibility, in that vendor’s own words.
What we found on vitadefence.com
All 5 engine(s) checked can reach this site. Nothing to change. 6 item(s) are openly not checked. Nothing about them is claimed.
All 5 engine(s) we check can reach vitadefence.com. Its robots file answered HTTP 200.
| Engine | Can reach vitadefence.com |
|---|---|
| OpenAI | yes |
| Anthropic | yes |
| Perplexity | yes |
| Apple | yes |
| yes |
Measured on https://vitadefence.com.
The file at packs/09-per-engine/per-engine.txt says the same thing for vitadefence.com, so you can check this yourself rather than take our word for it.
Nothing to do here yet
There is no step to follow in this chapter for vitadefence.com today. Nothing has been invented to give you something to do.
When this starts to matter
Every engine we check can reach your site.