Search a website with AI: CraCha vs. ChatGPT and Perplexity
ChatGPT and Perplexity search the web anew for every question; CraCha reads a website beforehand. What that means for answers from large websites.
Nicolas Guerrero Tello ·
As of September 24, 2026. Other providers’ features change quickly. Sources are listed at the end of the article.
In short
- ChatGPT and Perplexity answer questions with a live web search. That’s ideal for open questions across many websites.
- CraCha reads one specific website in full and answers your questions only from those pages, each with a link to the original page.
- If you’re looking for something that sits somewhere on a large website, a knowledge base of your own also finds subpages that a general web search ranks far down.
Two approaches: live search or your own knowledge base
When you ask ChatGPT with search or Perplexity a question, the system searches the web at that moment, picks a few results and writes an answer from them. Which pages it finds depends on the search index and on how you phrase the question. That’s flexible, but it also means a subpage ranked far down may never show up in the answer.
CraCha turns this around. You decide beforehand which website should be the basis. CraCha finds its subpages via the sitemap or the internal links, reads up to 500 pages per run and stores them as a knowledge base. Every question is then searched in exactly that content, including pages a search engine hardly shows.
What about projects in ChatGPT and Perplexity?
Both offer workspaces that keep context:
- ChatGPT projects bundle chats, files and instructions. Since February 2026 you can also add links, for example to Slack channels or Google Drive files, and pasted text as sources. In the in-depth research mode (Deep Research) you can limit the search to specific websites.
- Perplexity projects (called “Spaces” until the end of July 2026) store files, instructions and links that every search in the project uses as context.
That helps when you work with your own files or a few selected pages. A feature that reads an entire website with all its subpages and keeps it searchable is not described in either provider’s help pages.
Comparison at a glance
| Criterion | ChatGPT and Perplexity | CraCha |
|---|---|---|
| Where do the answers come from? | Live web search, plus your own files in a project | Only from the website you read |
| Large website with many subpages | Depends on which pages the search finds | Subpages are read beforehand, up to 500 per run |
| Questions across the whole internet | Yes, that’s what they’re made for | No |
| Current news | Yes | No, CraCha knows the state of its last read |
| Sources in the answer | Links to web pages found | Links to the original pages of the website read |
| Cost | Free tiers, more with a subscription | 100 free credits, then packs from €10, no subscription |
When ChatGPT or Perplexity is the better choice
- Your question concerns many different websites, such as a market overview or a comparison of several providers.
- You need current information such as today’s news or prices.
- You want to analyze your own files, have something written or develop ideas.
When CraCha is the better choice
- The answer is on one specific website, for example in product documentation, a help center, a client’s website or a university website.
- The website has so many subpages that you can’t reliably find the right spot with search.
- The answer should rely only on that source, not on some forum. CraCha answers exclusively from the pages read and tells you when they don’t contain the answer.
- You ask questions again and again about the same website. The knowledge base stays in your account.
- You want to check your own text against the website, such as a draft or a price list. The Content Check in the chat shows contradictions and outdated details with sources.
A free tip for single questions
If you only have one question about a website, you don’t need a new tool. Type site:example.com followed by your search term into Google, and Google searches only that domain. For recurring questions, answers that span several pages, or questions in your language about a website in another one, a knowledge base of your own pays off.
What CraCha can’t do
CraCha only reads publicly accessible HTML pages, no PDFs and no areas behind a login. It doesn’t search the whole internet and doesn’t update a knowledge base automatically. If the website changes, you read it again. Even answers with sources can be incomplete or wrong. That’s why every answer links the pages it is based on.
Conclusion
ChatGPT and Perplexity are generalists for the whole web. CraCha is a specialist tool for one website you want to question thoroughly. Try it with a website you regularly search: with the 100 free credits you can, for example, read 20 pages and then ask 16 questions.
Sources
Try it with your own website
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