Everything You Need to Know About Google NotebookLM - Your AI Research Companion

calender-iconPublished: 1 Jun 2025

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NotebookLM GoogleAI GeminiAI AIProductivity AIResearchAssistant


INTRODUCTION

NotebookLM is an AI-powered research and note-taking assistant from Google, designed to help users organize, understand, and engage with their own documents. Think of it as a personal research partner, capable of reading your files, answering questions, summarizing complex topics, and even generating podcasts based on your content.

Originally launched in 2023 as Project Tailwind, NotebookLM has evolved into a sophisticated tool integrated into the Google Workspace ecosystem, accessible on web, Android, and iOS.

NotebookLM Accepted Sources

NotebookLM can help you summarize and extract information from various sources. It accepts a wide range of document types, including:

  • PDFs (.pdf)
  • Google Docs (.doc)
  • Google Slides (.ppt)
  • Microsoft Word (.docx)
  • Plain text (.txt)
  • Markdown (.md)
  • Copied and pasted text
  • Website URLs (public URLs)
  • YouTube URLs (public videos with captions)
  • Audio files (e.g., MP3, WAV, among others)
  • Images: While it mentions support for .png, .jpg, and .jpeg

NOTE: Spreadsheets: Currently, NotebookLM does not support Excel (.xlsx) or other spreadsheet file types directly.

notebooklm-accepted-sources

NotebookLM Free and Subscription Versions

NotebookLM can help you summarize and extract information from various sources. It accepts a wide range of document types, including:

  • Standard NotebookLM (Free)
    • Notebooks per user: 100
    • Sources per notebook: 50
    • 200MB (for local uploads like PDFs)
    • upto 500,000 words
    • Queries per notebook (daily): 50
    • Audio overviews per notebook (daily): 3
  • NotebookLM Pro (Paid):
    • Notebooks per user: 500
    • Sources per notebook: 300
    • 200MB (for local uploads like PDFs)
    • 500,000 words (the word limit per source remains the same)
    • Queries per notebook (daily): 500
    • Audio overviews per notebook (daily): 20

Everything NotebookLM Can Do

NotebookLM can help you summarize and extract information from various sources. It accepts a wide range of document types, including:

everything notebooklm can do

Understanding and Analyzing Information:
  • Analyse Large Datasets: It can analyse large data upto 500,000 words and supports upto 300 sources.
  • Cross-Reference: See how different documents are related, even if they’re from different sources.
  • Find Key Ideas: Identify and highlight the most important ideas, facts, and concepts in your documents.
  • Analyze Multiple Documents: Compare and connect information across several documents to find patterns and common themes—useful for big projects.
  • Understand Context: The AI understands your specific materials, so it gives answers based on your data, not random guesses.
Questions and Explore:
  • Answer Questions: Get answers directly from your uploaded files.
  • Suggested Questions: NotebookLM suggests follow-up questions to help you learn more.
  • FAQs:Make a list of common questions and answers from your documents.
  • Citations for Answers:Every answer comes with the exact source and location in your documents.
  • Customize Chat Style: : Choose how the AI responds—more like a guide or an analyst, and pick shorter or longer answers.
Create New Content:
  • Mind Maps: Visualize your ideas and how they connect.
  • Make Briefing Notes: Summarize key points for quick reading or presentations.
  • Summarize Documents: Quickly create summaries of one or more documents to understand the main points.
  • Study Guides: Create study materials with questions and answers from your documents.
  • Timelines: Organize events and facts into timelines.
  • Audio Summaries: Turn your materials into podcasts you can listen to.
  • Interactive Audio: Talk to the AI during an audio session—ask for clarifications or more details.
  • Brainstorm New Ideas: Find new trends, ideas, and product concepts by analyzing your materials.
Stay Organized and Collaborate:
  • Notebooks: Keep your documents and notes in separate notebooks for different topics or projects.
  • Add Your Own Notes: Write and save your own notes alongside the documents.
  • Share and Work Together: Share your notebooks with others and collaborate—give them "view" or "edit" access.
  • Notebook Analytics: For shared notebooks, see how many people have viewed them and how many questions they’ve asked.
Find New Information:
  • Find More Sources: Search the web for extra information related to your notebook.

Frequently Asked Questions (FAQ)

Is Notebooklm free?
NotebookLM offers both free and paid versions, catering to different user needs:

The standard version of NotebookLM is completely free for anyone with a Google account. It provides access to core features such as document uploads, summarization, Q&A, and audio overviews. This version is ideal for casual users, students, or professionals who require basic AI-powered research assistance.

For users seeking enhanced capabilities, NotebookLM Plus is available through the Google One AI Premium subscription. This plan includes:

1. Increased Usage Limits: Up to 500 notebooks, 300 sources per notebook, 500 daily chat queries, and 20 audio generations per day.

2. Advanced Features: Enhanced sharing options, customization tools, and integration with other Google AI services like Gemini Advanced.

3. Pricing: $19.99 per month, with a 50% discount ($9.99/month) for eligible U.S. students aged 18 and over for the first year.

Can notebooklm transcribe audio?
Yes, NotebookLM can transcribe audio files and generate summaries or analyses based on them.

NotebookLM supports the upload of audio files, such as MP3 and WAV formats. Once uploaded, the system can transcribe the audio content, allowing you to:
  • Search within the transcribed text
  • Generate summaries or study guides
  • Create AI-generated audio overviews

can notebooklm read handwriting?
Yes, NotebookLM can read and process handwritten notes, provided they are uploaded in a compatible format. NotebookLM can effectively interpret handwritten content when it's uploaded as: PDF files or as Scanned images

What are alternatives available for notebooklm ?
several tools offer similar or enhanced functionalities tailored to various needs, such as AI-driven note-taking, research assistance, podcast generation, and local deployment. Here's a curated list of noteworthy alternatives:

Tool Key Features Pricing
NotebookLM AI-powered summaries, Q&A, podcast overviews Free (Google account required)
ClickUp Task management, AI notes, meeting summaries Free + premium plans
Notion AI AI writing, summaries, databases Free + premium plans
Roam Research Networked notes, bidirectional links Paid ($15/month)
Obsidian Markdown notes, local storage, plugins Free + commercial licenses
Jellypod AI podcast creation, regional voices Paid (details TBD)
NotebookLlama Open-source, text-to-podcast Free (open-source)
SurfSense Browser AI, local knowledge base Free (open-source)
tldw Open-source summary + transcription Free (open-source)
SciSpace AI Paper summaries, explanations Free + premium (from $8.34/month)
Afforai Smart summaries, context-aware Q&A Free + premium

Is notebooklm available for android?
Yes, NotebookLM is now available as a dedicated Android app, offering a seamless and powerful experience for research, note-taking, and AI-driven insights on the go. You can download the NotebookLM app from the Google Play Store. Alternatively, you can visit the official NotebookLM website for more information and access to the app.