Compare Kagi vs Copy.ai vs Open Notebook
| Feature | Kagi | Copy.ai | Open Notebook |
|---|---|---|---|
| Description | Kagi is a paid, ad-free search engine that includes Kagi Assistant for AI answers and research help. It is funded by its users rather than advertising, so you get focused results and AI help without tracking. | AI copywriting for marketing and sales | An open-source NotebookLM-style app for researching, summarizing and chatting with your sources. Built for: Researchers, writers and learners who want a private NotebookLM alternative. Format: Self-hosted web app (Docker). License: MIT. Open source on GitHub (40,067 stars as of 2026-10-11). |
| Pricing | Free trial of 100 searches; Starter $5/mo; Professional $10/mo; Ultimate $25/mo (annual discount available) | $49/month | Free and open source; self-hosting, model or API costs may apply |
| Main category | Chat assistants | Writing | Research and notes |
| Website | Visit Kagi | Visit Copy.ai | Visit Open Notebook |
| Info last checked | October 17, 2026 | October 12, 2026 | October 12, 2026 |
Loading selector…