Per TFA, this money was mostly raised from Kagi's existing customers.
They aren't building a web crawler. Kagi is a search "client" (it is one way to build on a shoestring budget, alright), augmented by an in-house small-scale just-in-time crawler.
> From here, we take your query and use it to aggregate data from multiple other sources, including but not limited to Google, Bing, and Wikipedia, and other internal data sources in order to procure your search results. https://help.kagi.com/kagi/privacy/privacy-protection.html
> We also have our own non-commercial index (Teclis), news index (TinyGem), and an AI for instant answers. https://help.kagi.com/kagi/search-details/search-sources.htm...
I like Kagi's general vision for LLMs + Search. There's a real chance small competitors can compete with Google with clever use of LLMs' zero-shot summarization, categorization, intent recognition, and answering abilities.