Gemini Notebook vs Comet
Which is better in 2026? Five scores, side by side.
Gemini Notebook is the better app overall, scoring 8.7 to 8.2. Gemini Notebook wins on 5 of the 5 scores, Comet on 0.
Students, researchers and professionals digesting long documents
Researchers and heavy web users who want AI help beside every tab
Score by score
The details
| Feature | Gemini Notebook | Comet |
|---|---|---|
| Category | AI Assistants | AI Assistants |
| Category rank | #4 of 16 | #10 of 16 |
| Developer | Perplexity AI | |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | ✓ |
| Android | ✓ | ✓ |
| Mac | — | ✓ |
| Windows | — | ✓ |
| Web | ✓ | — |
Common questions
Is Gemini Notebook better than Comet?
Gemini Notebook is the better app overall, scoring 8.7 to 8.2. Gemini Notebook wins on 5 of the 5 scores, Comet on 0.
Which is cheaper, Gemini Notebook or Comet?
Gemini Notebook: Free with a Google account; Google AI Plus, Pro and Ultra plans raise the limits. Comet: Free on every platform; Perplexity Pro ($20 a month) and Max raise the limits. On value for money, Gemini Notebook scores higher.
Do Gemini Notebook and Comet work on the same devices?
Only Gemini Notebook runs on Web. Only Comet runs on Mac, Windows.
Which is more private, Gemini Notebook or Comet?
Gemini Notebook scores higher on privacy (7.0/10). Google says personal accounts' data isn't used for training unless you send feedback, which human reviewers may read. The App Store label links contact info, content, IDs and usage to you.
Strengths and weaknesses
Gemini Notebook
- Answers grounded in your own documents
- Turns notes into audio, video and flashcards
- Free tier allows 100 notebooks
- AI can still misread or overreach your sources
- Higher limits come only through Google AI plans
- Feedback you send can be read by human reviewers
Gemini Notebook, called NotebookLM until July 2026, is an AI research assistant that sticks to the material you give it. Add PDFs, Google Docs and web links, and it answers with citations pointing back to your sources. It can also turn them into podcast-style Audio Overviews, video explainers, slides, flashcards or reports. The free tier is roomy. It can still get things wrong, so check those citations.
Full Gemini Notebook review
Comet
- Free on Mac, Windows, iPhone and Android
- Can act on pages, not just sum them up
- Your sessions sync between phone and computer
- A synced account lets Perplexity record your browsing history
- The helper has to read the pages you visit
- No Linux version
Comet is Perplexity's web browser, with an AI helper beside every tab. It can sum up a page or compare products across sites. It can even work through a multi-step task while you browse. Bigger jobs go to Perplexity Computer. It's free on Mac, Windows, iPhone and Android, and your sessions sync between them. The trade-off is privacy. The helper has to read your pages, and a synced account lets Perplexity record your history.
Full Comet review
