ChatGPT Study Mode and NotebookLM both promise to help you learn, but they solve different problems. Study Mode turns ChatGPT into a patient tutor that asks you questions instead of handing over answers. NotebookLM, which Google renamed Gemini Notebook in July 2026, is a research workspace that reads your own course material and turns it into summaries, quizzes, flashcards and audio or video overviews. Here is how they compare in October 2026 and which one fits your situation.
What each tool actually does
ChatGPT Study Mode
OpenAI launched Study Mode on July 29, 2025. It is not a separate app but a way of using ChatGPT. When it is on, ChatGPT asks what you already know, breaks topics into layers, gives hints rather than final answers, and checks your understanding with open questions and quizzes delivered one question at a time. You can upload notes, syllabi, worksheets, slides, PDFs or a photo of a problem, and ask for practice questions or flashcard style review. If Memory is turned on, it can adjust to your level over time.
To use it on the web, type @study in the message box or pick Study from the plus menu. On iPhone and Android, tap the plus button and choose Study.
NotebookLM, now Gemini Notebook
Google’s tool works the other way around. You create a notebook, add sources such as PDFs, websites, YouTube videos, audio files, Google Docs and Google Slides, and every answer is grounded in and cites that material. Its studio panel can generate Audio Overviews, Video Overviews, mind maps, reports such as study guides and briefing documents, data tables, flashcards, quizzes, slide decks and infographics. Since the July 2026 rename, notebooks also sync with the Gemini app, and old NotebookLM links redirect automatically.
Study Mode vs NotebookLM side by side
| Feature | ChatGPT Study Mode | Gemini Notebook (NotebookLM) |
|---|---|---|
| Core idea | Guided tutoring through questions | Learning from your own sources |
| Grounding | General model knowledge plus files you upload | Answers cite the sources in your notebook |
| Quizzes and flashcards | Yes, inside the chat | Yes, as editable studio outputs |
| Audio and video summaries | No dedicated feature | Audio Overviews and Video Overviews |
| Free access | Available on every ChatGPT plan, including Free | Free tier with 100 notebooks and 50 sources each |
| Where it works | Web, iOS, Android | Web, iOS, Android, Gemini app |
What changed in 2026
Gemini Notebook has moved fast this year. Beyond the rename, Google added a secure cloud computer to each notebook so it can write and run code for data analysis, first for Google AI Ultra subscribers with Pro users next. In September 2026 Google announced a batch of study features:
- Real time voice conversations with your notebooks in the mobile app, starting with Ultra subscribers.
- A mobile audio recorder for lectures that saves recordings as sources you can chat with.
- Interactive learning overviews that mix summaries with quizzes, flashcards and infographics.
- New quiz formats, including short answer, multiple select and fill in the blank.
- Short Video Overviews of about 60 seconds for formulas, diagrams and science concepts.
Study Mode has grown more quietly. It now runs with any model your ChatGPT plan includes, and parents with linked teen accounts can set Study hours that start new chats in Study Mode automatically. Some ChatGPT Edu schools can switch it on for every student.
Free vs paid: what you get
Study Mode adds no extra usage. It follows the same message limits and models as your normal ChatGPT plan, so Free users get the full study experience but hit limits sooner than Go, Plus or Pro subscribers. It does not work in Temporary Chats, custom GPTs or Projects.
Gemini Notebook scales by Google plan. The free tier allows 100 notebooks with 50 sources each. Google AI Plus raises that to 200 notebooks and 100 sources, Google AI Pro to 500 notebooks and 300 sources, and Ultra goes higher still. Paid plans also raise usage limits: Google says AI Pro gives four times the Gemini Notebook usage of an account without an AI plan.
Which one should you use?
- Choose Study Mode for math and science problems, essay planning, and concepts you do not understand yet. The question and answer style forces you to think instead of copying.
- Choose Gemini Notebook for exam review across a whole course, long reading lists, or research projects where every claim must trace back to a source.
- Use both by building a notebook from your course files for summaries and flashcards, then taking the hardest topics to Study Mode for one on one style tutoring.
Both tools can make mistakes. Check important facts against your textbook or teacher, and follow your school’s rules on AI use for graded work.
FAQ
Is NotebookLM still available?
Yes. It is the same product under a new name, Gemini Notebook, since July 2026. Existing notebooks and shared links keep working.
Is ChatGPT Study Mode free?
Yes. It is available on all ChatGPT plans, including Free, on the web and in the mobile apps.
Does Google train its AI on my notebook sources?
Google says your data is not used to train Gemini Notebook unless you submit feedback. Workspace and education accounts have additional protections.
Can Study Mode read my PDFs and slides?
Yes. You can upload notes, PDFs, slides, worksheets and photos of problems, subject to your plan’s upload limits.
The verdict
There is no single winner because the tools do different jobs. ChatGPT Study Mode is the better tutor for learning how to solve problems, while Gemini Notebook, formerly NotebookLM, is the better study hub for mastering a large pile of your own course material. Start free with both and keep the one that matches how you study.
Updated October 2026: rewritten to cover the NotebookLM rename to Gemini Notebook, its September 2026 study tools, current plan limits and how ChatGPT Study Mode works today.
Featured photo: Christin Hume on Unsplash.
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