Re-understand Kagi: the core capabilities of AI search tools

As a product of Kagi Inc., Kagi provides the capability of "privacy-first paid ad-free search engine, built-in AI summary and multiple LLM assistants" in the field of AI search. This article will give a structured review.

Why the team chose Kagi

Fundamental advantages of the subscription business model: Kagi's core technical advantage is actually business model innovation - when search engine revenue comes from users rather than advertisers, the algorithm optimization goal returns from "maximizing ad clicks" to "maximizing user satisfaction." This business model fundamentally eliminates the inherent conflicts of interest in advertising-dependent search engines such as Google and Bing, making the quality of search results and commercial interests highly consistent. Multi-source search index fusion: Kagi is not a purely independent search crawler, but intelligently integrates self-built indexes with multiple commercial search APIs (including Brave Search’s own indexes, etc.) for sorting, and then superimposes its own privacy protection layer and personalized algorithm to achieve independent quality sorting and privacy protection while ensuring search coverage. Kagi Assistant's multi-LLM integration capabilities: The Kagi Assistant provided by the Ultimate plan integrates multiple top-level LLMs. Users can access the capabilities of different models such as GPT-4, Claude, Gemini, etc. in a single interface. Combined with Kagi's search results, it provides AI answers based on information sources, solving the problem of information silos of a single LLM subscription. Vertical search capability of Lenses: The custom search scope function allows researchers, developers and professionals to create highly specialized search views, achieving fine-grained control far beyond Google/Bing on-site search, and is an efficient tool for academic research and technical research.

Function list

• Ad-free search results: The search results do not contain paid advertising spaces at all. All results are sorted based on relevance and quality. The first result the user sees is always the most relevant content, not the advertiser with the highest bid.
• FastGPT Instant AI Answers: For factual queries, concise AI answers are instantly generated at the top of search results while retaining the full list of search results, allowing users to get quick answers while maintaining control over the source of the information.
• Summarize Page Summary: A one-click AI summary function is provided next to the search results list. You can understand the core content of the page without opening the web page, greatly improving the efficiency of information consumption, and is especially suitable for quickly filtering a large number of search results.
• Kagi Assistant multi-LLM dialogue: Integrate dialogue assistants from multiple top LLMs such as GPT-4, Claude, Gemini, etc. to support in-depth dialogue in search contexts. Ultimate plan users have unlimited access without the need to subscribe to multiple AI services.
• Lenses custom search scope: Create custom "lenses" to limit the search scope to specific website collections (such as only searching academic databases, technical documents, news sources, etc.) to meet professional research and vertical field search needs.
• Personal Results: Allows users to increase or decrease the weight of specific websites in search results, personalize search rankings, and completely customize their own search experience.
• Bangs (quick search commands): Supports 13,000+ quick search commands (such as !a to go directly to Amazon, !g to jump to Google), and reach any target site in one step in the Kagi search box.

Conclusion: Kagi provides a clear set of AI search capabilities. Whether it is suitable depends on your specific process. It is recommended to refer to official documents and actual measurements.