AI Search Engine Comparison 2026: Perplexity vs Genspark vs Felo vs Kagi
A thorough comparison of the top AI search engines of 2026, including Perplexity, Genspark, Felo, and Kagi. Understand how they differ from Google Search and where each tool excels.
The shift from traditional keyword search to AI-powered search — where the AI synthesizes a direct answer — is accelerating. This article puts the leading AI search engines of 2026 head-to-head.
What Is an AI Search Engine?
An AI search engine draws on multiple web sources to generate an integrated answer to your question. Instead of presenting ten links like classic Google Search, it delivers a direct, sourced response to whatever you asked.
Major AI Search Engine Comparison
Perplexity AI
The leader in AI search, Perplexity's greatest strengths are response accuracy and transparent source citations. Pro Search mode conducts deep, multi-source research before producing a comprehensive answer. Follow-up questions allow you to drill down further, making it ideal for research tasks. The free plan allows dozens of searches per day; the Pro plan costs $20 per month.
Genspark
Genspark takes a unique approach by presenting search results as a custom "Sparkpage" — an automatically generated summary page on the topic at hand. Rather than just answering the question, it builds a comprehensive information page complete with comparison tables and FAQs, making it particularly useful when evaluating multiple options. It is completely free.
Felo
Felo is a Japan-originated AI search engine that specializes in multilingual research. Ask a question in Japanese, and Felo searches sources in English, Chinese, and other languages before delivering a Japanese-language summary. It is the go-to tool for efficiently gathering international information in your native language. A built-in mind-map feature also helps organize findings visually.
Kagi
Kagi is a privacy-first search engine with no ads and no tracking. It is paid (starting at $10/month), but that investment means results are never distorted by advertising and are purely quality-driven. The "FastGPT" AI summary feature is also included, and it commands a strong following among developers and privacy-conscious users.
How Do They Compare to Google Search?
AI search engines are not a wholesale replacement for Google. For local information (nearby restaurants, etc.), breaking news, and shopping, Google Search remains dominant. For research, learning, and complex questions, AI search engines have the advantage.
Comparison Table
| Feature | Perplexity | Genspark | Felo | Kagi |
|---|---|---|---|---|
| Pricing | Free / $20 | Free | Free / $9.99 | $10+ |
| Source citations | Excellent | Excellent | Good | Good |
| Japanese support | Good | Good | Best | Average |
| Multilingual search | Yes | Yes | Best | Yes |
| Ads | None | None | None | None |
| Standout feature | Pro Search | Sparkpage | Mind map | FastGPT |
Recommended Use Cases
For everyday research, Perplexity is the top choice. For comparing multiple options side by side, Genspark excels. For gathering information from international sources, Felo is unmatched. For privacy-first users, Kagi is the answer. Using multiple AI search engines in combination, matched to the task at hand, dramatically improves both quality and efficiency.
Conclusion
AI search engines have made major strides in 2026, delivering the kind of deep insight that traditional search simply cannot match. Use them alongside Google Search, and actively integrate them into your research and analysis workflows. Start with the free options — Perplexity or Genspark — and experience the difference for yourself.