Compare Duck.ai vs ProWritingAid vs Open Notebook
| Feature | Duck.ai | ProWritingAid | Open Notebook |
|---|---|---|---|
| Description | Duck.ai is DuckDuckGo private AI chat. It helps you ask questions and draft answers without building an advertising profile around your prompts, so you can get help while keeping everyday browsing privacy habits. | ProWritingAid helps writers improve grammar, style, and story structure with reports and AI rewrites. A free tier lets you start, and Premium plans add deeper critique tools for people finishing books and long documents. | 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 private AI chat (DuckDuckGo Duck.ai) | Free tier available; Premium about $30/mo monthly or $10/mo billed yearly ($120); Premium Pro about $36/mo monthly or $12/mo yearly; lifetime options listed | Free and open source; self-hosting, model or API costs may apply |
| Main category | Chat assistants | Writing | Research and notes |
| Website | Visit Duck.ai | Visit ProWritingAid | Visit Open Notebook |
| Info last checked | October 14, 2026 | October 14, 2026 | October 12, 2026 |
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