Software Alternatives, Accelerators & Startups

NotebookLM VS Substack

Compare NotebookLM VS Substack and see what are their differences

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NotebookLM logo NotebookLM

AI-first notebook by Google, available in the U.S., blends large language models and user-chosen data. Apply for access to explore intelligent insights and enhance your note-taking experience.

Substack logo Substack

With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.
Not present
  • Substack Landing page
    Landing page //
    2022-10-26

NotebookLM features and specs

  • Integration with Google Workspace
    NotebookLM is seamlessly integrated with Google Workspace, allowing users to efficiently embed and access documents from Google Docs, Sheets, and other Workspace apps.
  • AI-Powered Assistance
    The platform uses AI to provide smart suggestions and insights, enhancing productivity by auto-completing tasks and reducing manual effort.
  • Real-Time Collaboration
    NotebookLM supports real-time collaboration, allowing multiple users to work on the same notebook simultaneously, similar to Google Docs.
  • Flexibility and Customizability
    Users can customize their notebooks with various widgets and functionalities to suit their specific workflow needs.

Possible disadvantages of NotebookLM

  • Limited Offline Access
    NotebookLM primarily operates online, which can be a limitation for users requiring offline access to their documents and tools.
  • Privacy Concerns
    As with many AI-powered and cloud-based tools, there are potential privacy concerns related to data security and the handling of personal information.
  • Steep Learning Curve
    The integration of advanced features might present a steep learning curve for new users unfamiliar with Google Workspace or AI functionalities.
  • Dependence on Google Ecosystem
    Users who do not regularly use Google Workspace may find limited utility in NotebookLM due to its strong integration with Google's ecosystem.

Substack features and specs

  • Ease of Use
    Substack offers a user-friendly interface that makes it easy for writers to publish and monetize their newsletters.
  • Built-in Monetization
    Writers can easily charge readers for subscriptions, allowing for straightforward monetization.
  • Direct Audience Connection
    Substack allows writers to build a direct relationship with their audience via email, which can lead to a more engaged readership.
  • Discovery and Community
    Features like staff picks and recommendations help writers get discovered by new readers.
  • No Upfront Costs
    Substack does not charge upfront fees; instead, it takes a percentage of subscription revenues, making it easier to start.
  • Content Ownership
    Writers retain full ownership of their content, giving them more control over their work.

Possible disadvantages of Substack

  • Revenue Share
    Substack takes a 10% cut of subscription revenues, which can add up for writers with a large subscriber base.
  • Limited Customization
    The platform has limited customization options compared to building a custom website or using more flexible CMS options.
  • Dependency on Platform
    Relying on Substack means depending on its policies and infrastructure, which could pose risks if the platform changes its terms or features.
  • Competition
    As more writers join Substack, it can become challenging to stand out amidst the growing competition.
  • Email Deliverability
    Writers may face issues with email deliverability, as some newsletters may end up in spam folders.
  • Payment Processing Fees
    Besides Substack's fee, payment processors like Stripe also take a percentage, further reducing net earnings for writers.

Analysis of NotebookLM

Overall verdict

  • NotebookLM is a genuinely useful AI-powered research and note-taking tool from Google that excels at grounding responses in your own uploaded documents, reducing hallucinations and making it reliable for studying, research, and summarization.

Why this product is good

  • It grounds all answers in your uploaded sources, so responses cite specific documents and reduce AI hallucinations
  • Supports a wide range of source types including PDFs, Google Docs, websites, YouTube videos, and pasted text
  • The Audio Overview feature can turn your notes into a podcast-style conversation for easier learning
  • Great at summarizing, generating study guides, FAQs, timelines, and briefing documents from your materials
  • Free to use with a generous set of features backed by Google's Gemini models
  • Inline citations make it easy to verify where information comes from

Recommended for

  • Students studying from textbooks, lecture notes, and research papers
  • Researchers and academics organizing and synthesizing large volumes of source material
  • Writers and journalists managing notes and reference documents
  • Professionals who need to quickly summarize reports, contracts, or documentation
  • Anyone who wants an AI assistant that answers based on their own trusted sources rather than the open web

Analysis of Substack

Overall verdict

  • Substack is a good choice for writers seeking autonomy and a straightforward way to monetize their content. However, it may not be the best fit for those who prefer working within the framework of a larger publication or those unfamiliar with the challenges of building and maintaining a subscriber base.

Why this product is good

  • Substack is a platform that allows writers, journalists, and content creators to publish and monetize their newsletters. It is praised for its ease of use, built-in subscription system, and direct-to-consumer model which enables writers to retain control over their audience and content. The platform has attracted both independent writers and established journalists seeking the freedom to monetize their work without traditional media constraints.

Recommended for

  • Independent writers and journalists
  • Content creators looking to monetize their work
  • Individuals seeking a direct relationship with their audience
  • Those who appreciate simplicity in publishing

NotebookLM videos

Google made a new AI note app - NotebookLM review

More videos:

  • Review - Don't Pay for NotebookLM Plus Until You Watch This!

Substack videos

Monetizing Podcasts and Newsletters - Chris Best of Substack and Jonathan Gill of Backtracks

More videos:

  • Review - E1016 Substack CEO Chris Best empowers writers via email newsletter platform, raised $15M from a16z
  • Review - Why EVERYONE should be on Substack | What it is, How it Works, $$$
  • Review - Beehiiv vs Substack (2024) - Which is Better?
  • Review - My Experience with SUBSTACK: An Honest Review of Substack

Category Popularity

0-100% (relative to NotebookLM and Substack)
AI
100 100%
0% 0
Blogging
0 0%
100% 100
Productivity
100 100%
0% 0
CMS
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare NotebookLM and Substack

NotebookLM Reviews

We have no reviews of NotebookLM yet.
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Substack Reviews

25+ Medium Alternative Platforms for Publishing Articles
Substack offers writers of all experience levels the ability to write an email newsletter that’s profitable through subscriptions. Substack provides purpose-built web and newsletter publishing tools to enable writers to monetize their newsletters. It is a service often favoured by readers because it’s a convenient all-in-one solution for writing a successful podcast that...
Source: forgefusion.io
10 Best Medium Alternatives for Reading and Publishing
What sеts Substack apart is its sеamlеss intеgration of contеnt crеation and subscription-basеd monеtization. Substack’s usеr-friеndly intеrfacе, distribution tools, and support for various contеnt formats make it a popular choice for indеpеndеnt crеators looking to connеct dirеctly with thеir audiеncе and turn thеir passion into a sustainablе incomе strеam.
9 Best Medium Alternatives for Making Money With Your Writing in 2023
Substack and Medium differ primarily in their monetization methods. Medium pays creators based on reader engagement, while Substack enables writers to monetize directly through paid subscriptions to their newsletters. This business model allows Substack users to build a direct relationship with their readers via their email inboxes, whereas Medium interactions primarily...
11 Patreon Alternatives for Audience Monetization in 2023
Like a few of the other platforms we’ve looked at, Substack takes a cut of your earnings rather than charging a 10% platform fee.
Source: www.uscreen.tv
Any good Mailchimp alternatives?
My question for you is, what is keeping you from making $31 per month from your list? Are you using any feature that Substack (free until you get paid) can't handle?

Social recommendations and mentions

Based on our record, Substack seems to be a lot more popular than NotebookLM. While we know about 103 links to Substack, we've tracked only 10 mentions of NotebookLM. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

NotebookLM mentions (10)

  • Associate Cloud Engineer Certification Path
    Gemini Notebook only generates content based on your sources and will not hallucinate or provide false or unrelated information. I cannot overemphasize the importance of this platform while following through with this certification learning path, as it allows you to ask questions with answers sourced directly from your materials, test yourself with quizzes, and generate a study guide to help you succeed and feel... - Source: dev.to / 12 days ago
  • How to Summarize PDFs Locally with Open-Source LLMs (No API, No Data Leaving Your Machine)
    You just need a few summaries occasionally. Standing up Ollama, a model, and an extraction pipeline to summarize five PDFs is overkill. If privacy isn't the constraint, a free web tool does it in seconds — ChatPDF and NotebookLM if you don't mind an account, or PDFSummarizer.net if you want no sign-up and formats like EPUB/PPTX handled for you. One caveat that matters specifically because this article is about... - Source: dev.to / about 2 months ago
  • Tools I'm Using in 2026 (and what I've stopped using from 2025)
    Last year I was heavily into Perplexity but for most of 2026 I've actually been using NotebookLM a lot more. Perplexity is still useful for just daily news, but when I want to research, when I want to summarise, when I want to learn... NotebookLM all the way. - Source: dev.to / 3 months ago
  • NotebookLM Skills: Give Claude Code a Brain That Doesn't Hallucinate
    NotebookLM already sorted this on Google's side. You upload your sources, Gemini answers only from those sources, every answer comes with citations pointing to the exact passage. The catch was it's browser-only. No API. No way to wire it into your agent workflow. - Source: dev.to / 4 months ago
  • How did I pass the AWS Certified Solutions Architect – Professional 2026 exam?
    In Notebook LLM, add the information sources you use for studying and use different formats. It currently supports Latin American Spanish. - Source: dev.to / 5 months ago
View more

Substack mentions (103)

  • How accurate have Ed Zitron's AI skeptic predictions been?
    Valid criticisms of AI - safety critics who think AI can take over the world like Yud (I find this the least credible but still valid) - Bernie type of critics who think AI can cause widespread job losses - Ruxandra Teslo who thinks AI can remove meaning which I feel is the most serious one [1] What are not valid - environmental like emissions and water usage - AI is useless and it will take the economy with it... - Source: Hacker News / 2 days ago
  • Writing by Hand is Good for your Brain
    It's ironic that the article that caused him to write this post (https://substack.com/@justindeschamps/note/c-261265212?utm_source=notes-share-action&r=7y05q) is written by AI. I see this style of informational writing all over the place now. - Source: Hacker News / about 1 month ago
  • Ask HN: What are your favorite blogs not about AI?
    Https://substack.com/@yelluwcomedy. - Source: Hacker News / about 2 months ago
  • Kids (With Phones) Are Alright
    Sure there was basically a cartel in social media. You saw coordinated censorship campaigns to ban the former president of the United States for example. But I wouldn't discount the amount of political interference there as well. The last administration admitted to flagging individual posts for the social media companies. But it's also true there is a lot of coordinated censorship even without state interference.... - Source: Hacker News / about 2 months ago
  • Financing the AI boom: from cash flows to debt [pdf]
    Manhattan Project: $36B, 5 years ▫ Apollo Program: $257B, 14 years ▫ Interstate Highway System: $620B, 37 years ▫ AI data centers: $930B, 6 years and still accelerating From: https://substack.com/@rubendominguez/note/c-244929068. - Source: Hacker News / about 2 months ago
View more

What are some alternatives?

When comparing NotebookLM and Substack, you can also consider the following products

Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.

Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.

ChatPDF - Chat with any PDF! Join millions of students, researchers and professionals to instantly answer questions and understand research with AI

Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.

Perplexity.ai - Ask anything

Buttondown - Buttondown is the best way to start and run your newsletter