These two are less alike than the rest of the list: one is a search product, the other is a privacy layer over a chat product.
This reflects each provider's default consumer experience at the time of writing. Provider features and policies change often, and vary by plan and region — check the provider for the current position. Product names are trademarks of their respective owners, used here for identification and comparison only.
Where Perplexity is the better choice
Perplexity is the better tool for a question whose answer lives on the web today and needs a citation. We do not try to be that, and a comparison pretending otherwise would be disproved in one query. Where this page applies is the ordinary case — asking a model something you would rather not have filed under your name.
Where our own protection stops
Secure AI removes the identity attached to your account, not identifying details you write into a message yourself. If you type your own name or address, that reaches the AI provider as you wrote it. And stored conversations are encrypted with a key we hold, so we remain technically capable of reading them.
The full account of what we can and cannot see is on our security page.
Questions
Does Secure AI search the web?
It is not what the product is built around. For sourced, current answers from the live web, a dedicated search product will serve you better.
Which should I use?
Both, honestly, for different questions. That is a strange thing for a comparison page to say, which is roughly the point.
Comparing more than one? the four-way comparison
Try Secure AI free
Frontier AI chat — encrypted by default, with your identity stripped before any request reaches the provider.