Explainpaper vs Gemini Notebook:
which should you use?

Gemini Notebook is ahead on 4 of the 10 rows compared, 3 of them about how well it does the job itself. That is a clear lead rather than a tiebreaker. Gemini Notebook is built for search, research & academics; Explainpaper does it well without it being its focus; both have a free plan you can start on; Gemini Notebook is cheaper to start paying for, $4.99 against $16. Explainpaper: Highlight the passage that lost you and get it explained at the level you ask for, in place, without leaving the paper. Gemini Notebook: You upload the sources and it answers only from them, linking every sentence to the passage it came from. The strongest verification pattern here.

Gemini Notebook — paid plans start at $4.99 a month against $16 a month.

Yes. Explainpaper: Free for everyone, forever, and not metered: unlimited highlight explanations, follow-up questions and Zotero import. The limit is model quality — the free tier runs on what Explainpaper calls basic AI models. Gemini Notebook: Free, and the core product is not gated: what a paid plan buys is headroom — a bigger notebook, more sources per notebook and higher limits on Audio and Video Overviews and Slides.

Explainpaper: Explains what a passage says rather than whether it is right, and a confident explanation of a flawed method reads exactly like a good one. The free tier is unlimited but runs on weaker models, so what you pay for is the quality of the explanation rather than more of it. Gemini Notebook: Deliberately limited — it will not answer what your documents do not cover, and cannot tell you whether they are any good. Paid headroom comes from a Google AI subscription rather than a plan of its own. It was called NotebookLM until Google renamed it in July 2026, and notebooklm.google.com is still where it opens.