Koolaid or not, as long as they're sticking to Claude (or at least away from MS/Google/Meta) I don't really mind. FastGPT[1], which recently became unaccidentally public[2], seems to work pretty well, even though it's still separate from their main offering. The feature creep of their main search engine, like the podcast search and listicle stuff, is easy to toggle off, so I imagine LLM integration will be optional as well.

[1] https://news.ycombinator.com/item?id=35719482

[2] https://labs.kagi.com/fastgpt