Gemini Notebook review

Gemini Notebook, the product formerly called NotebookLM, takes a different approach from the search tools on this list. You add your own sources, such as papers, lecture notes or reports, and its answers are grounded in that material. The free plan allows up to 50 sources per notebook with standard limits on chat and generated Slides, Audio Overviews and other outputs. Google AI Plus at $4.99 a month doubles the limits and allows 100 sources, while Google AI Pro at $19.99 a month gives four times the limits and 300 sources. For a literature review, Google says it synthesizes hundreds of sources into Reports, and Source Discovery or Deep Research can bring in new material from inside the notebook. Students can turn class material into Audio Overviews or Flashcards. The limits are that it relies on what you give it, it does not document reference manager exports, and paid plans are only sold in specific regions.

Who it is for

Students and analysts who want answers grounded only in their own documents.

Price

Free plan; higher limits with Google AI Plus at $4.99 per month or Google AI Pro at $19.99 per month.

$4.99 / month Get 2x higher usage access than Free
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Answers grounded in the sources you add to a notebook
• Audio Overviews, Video Overviews, Slides, Reports and Flashcards
• Source Discovery and Deep Research to find new material
• Interactive Mind Maps for complex topics
• Public notebooks you can share on consumer accounts

Strengths and weaknesses

• Strength: Free plan with up to 50 sources per notebook
• Strength: Turns class or research material into study aids and audio recaps
• Strength: Organization and school data is not used to train Gemini Notebook
• Weakness: Works best when you already have the sources, rather than for paper discovery
• Weakness: Paid plans are only available in specific regions
• Weakness: No documented reference manager export

Key facts

• Sources per notebook: 50 free, 100 on Plus, 300 on Pro, 600 on Ultra
• Former name: NotebookLM
• For organizations: Google Workspace, Workspace for Education, Google Cloud

Where it ranks

Gemini Notebook is No. 4 in our Best AI Research Assistants verdict.