NotebookLM review (2026)

Our verdict

NotebookLM, which Google now also brands as Gemini Notebook, is a research assistant grounded in the sources you upload. Strengths: summaries and note-taking tied to your own documents, which helps cut down on made-up answers, plus audio overviews. Weaknesses: it works best with documents you provide rather than open-ended questions, and we haven't verified current plan limits. Use it if you study, research or need to digest long PDFs and notes. Skip it if you want a general chatbot for everything.

Sources checked: notebooklm.google.com

S-tier in Productivity & Research

Best for: Chat with your docs; audio overviews.

Why S-tier: S-tier means a top pick: it scores 85+ on our 100-point scale and is one of the first tools we'd recommend in this category. We score quality (35), value (20), ease of use (15), momentum (15) and trust (15). How we rank.

Pricing: Pricing: check site (we only show prices verified on the official pricing page).

Alternatives in Productivity & Research

• Perplexity (S-tier): Answer engine with cited web sources
• Notion AI (A-tier): AI inside your notes, docs, and wiki
• Granola (A-tier): Meeting notes without a bot joining the call
• Gamma (A-tier): Slide decks and one-pagers from a prompt
• Otter.ai (B-tier): Live transcription of meetings