Fwiw I use AndiSearch and they already have a great summarizer integrated directly into search results that they launched last week.
There is a Summarize button on every result card that can show a summary. The summaries are much faster. And they are clearly much higher quality.
Unlike Kagi, they don't spam every HN post that mentions search with shill comments. And unlike Kagi, it is free and anyone can use it. It does not require login, so you can use it anonymously. This looks like a rushed attempt to copy the AndiSearch summary feature.
I already find that the summaries on AndiSearch are so good that I can use it to filter which articles I need to read. The Reader mode is also very good.
If you like this, I'd recommend comparing it. You can paste in a url and get a summary and reader mode for it. I find searching for the title works better. I haven't seen it posted here yet.
I find it does well with ebooks. I haven't tried with pdfs or videos. The quality of the AndiSearch summaries for the things I use every day like articles, Wikipedia and technical documentation is very good.
The Summarize button is on the search results, therefore you don't need to visit a separate site and paste in the url. Additionally, you already know when a summary is available as the button only shows when it is. It is new but already I feel that it changes how you use a search engine having this feature available right there on the results.
The Kagi one said 'No summary available at this moment, please try again later.' for many of the urls I tried.
I am (obviously) copying and pasting the same urls that appear in the search results I shared individually into the url entry form on the Kagi summarizer page.
Also, being realistic, I do not believe that many normal people try to summarize the full text of old public domain ebooks. If you search for Moby Dick, much better resources come up, and that is what you want a summary for. People want a summary when they are searching to know if they should read more.
Summarizing long articles, videos, etc. is why these summarizers are so useful, you talk about web search but what OP linked is not a search engine (the Kagi search engine is, but this demo is not, it is just a summarizer that you use if you already have, for example, an article found on HN), you are talking about two different tools.
There is a Summarize button on every result card that can show a summary. The summaries are much faster. And they are clearly much higher quality.
Unlike Kagi, they don't spam every HN post that mentions search with shill comments. And unlike Kagi, it is free and anyone can use it. It does not require login, so you can use it anonymously. This looks like a rushed attempt to copy the AndiSearch summary feature.
I already find that the summaries on AndiSearch are so good that I can use it to filter which articles I need to read. The Reader mode is also very good.
If you like this, I'd recommend comparing it. You can paste in a url and get a summary and reader mode for it. I find searching for the title works better. I haven't seen it posted here yet.
https://andisearch.com/