The short answer
Start with NotebookLM—now called Gemini Notebook—when your main job is navigating and comparing a set of sources. Start with ChatGPT when you want an adaptable back-and-forth explanation or practice session. Their capabilities overlap, so choose by the task and check the actual answers against your course.
- Google renamed NotebookLM to Gemini Notebook in July 2026; older guides may still use the original name.
- A source notebook is useful for locating passages across readings; a general assistant offers flexible conversation and practice.
- Both can work with course material. Neither guarantees correct interpretations or a complete account of the syllabus.
- Check permissions, account limits and institutional access before uploading material or paying.
Explore this guide6 sections · jump to what you need
A quick decision table
Google’s rename announcement confirms that Gemini Notebook remains a standalone product. This guide keeps “NotebookLM” in the title so readers using the familiar name can find the comparison.
These recommendations come from documented capabilities and the workflows below. We have not run a controlled head-to-head accuracy test, so they are starting points rather than a performance ranking.
| Your task | Start with | What to verify |
|---|---|---|
| Compare three assigned readings | Gemini Notebook | Do the cited passages support the comparison? |
| Discuss the first error in a solution | ChatGPT | Is the diagnosis consistent with the course method? |
| Find where your notes discuss a concept | Gemini Notebook | Did you include the right sources and versions? |
| Practise answering one question at a time | ChatGPT | Are the questions and feedback correct and in scope? |
| Understand a lecture PDF | Either; try the same difficult excerpt | Equations, diagrams, context and source references |
| Memorise facts for the term | A dedicated recall workflow may fit better | Can you maintain the review workload? |
When a source notebook earns its place
Google’s product documentation describes working with uploaded sources, inline citations and formats such as study guides and audio overviews. That makes the notebook a useful place to begin when your question crosses several readings.
Imagine a seminar with two papers and a lecture deck discussing the same policy. Ask where the sources disagree about the mechanism, then open the cited passages. Make your own table with the author, claim, evidence and limitation. If the tool blends two authors into one position, correct the table from the originals.
The notebook’s boundaries matter. If a required reading is missing, a fluent answer can still leave out an important argument. Adding more documents is not always the fix: separate unrelated modules and keep source names meaningful enough that you can recognise them.
Audio summaries can help you preview a topic or revisit it while away from your desk. If the assessment asks for an argument or calculation, also practise producing that output. Listening to a clear discussion is a different task.
When a conversational assistant is the better starting point
OpenAI’s exam-study workflow describes using course sources to build practice and a study plan. ChatGPT is not limited to generic internet explanations; you can supply the relevant material and direct the interaction.
For example, paste your attempted solution with the course definition and ask for the first incorrect step. Ask for a hint before a full solution, then try again. This can be easier to direct in a conversation than asking for a finished study packet.
Use the supplied course excerpt to review my attempt. Identify the first step you disagree with and explain which definition or assumption matters. Give one hint, then wait for me. If the excerpt is insufficient, say what is missing.
That is our suggested prompt, not evidence that the tool will follow it perfectly. Check the diagnosis and the final answer. If the course gives an official solution, use it to resolve disagreement rather than repeatedly asking the model to mark itself.
Try this source-checking exercise before choosing
Use a short passage you understand and are allowed to upload. Prepare two questions: one answered by the passage, and one it does not answer. For example, a passage may define a model but say nothing about the country where it was first tested.
- 01Give both tools the same material and the same two questions.
- 02Ask each to distinguish source-supported answers from outside knowledge.
- 03Open every source reference and check that it supports the exact claim.
- 04Ask a follow-up with a false assumption and see whether the tool corrects it.
- 05Record what needed checking, which interface helped you find the source, and whether account limits interrupted the task.
This is a personal fit check, not a scientific benchmark. Its value is in exposing a failure before you depend on the tool for a difficult reading. If both work, use the one you can access and verify most easily.
What about cost, uploads and university access?
Check the account you will actually use. Consumer and institutional arrangements can differ, and limits or offers change. A general “free for students” claim is not enough to establish eligibility in your country or university.
Before moving a large collection, test a representative file: a scanned PDF, a diagram-heavy lecture or a paper with tables. Inspect what the tool actually read. Source-based answers can still fail when the imported material is incomplete.
Use your university’s approved route for sensitive or restricted material. Keep original files and your own research notes, so your ability to study does not depend on a single account or chat history.
If your main job is one lecture deck
Both tools can help with lecture PDFs. LectureParse, which we build, offers another workflow: explanations and practice beside individual slides. It is worth considering if repeatedly locating a slide and managing a chat is the friction you want to remove.
For comparing a body of research, the notebook may be the better fit. For facts you already understand, a flashcard workflow may be enough. See our broader AI toolkit guide and Anki vs Quizlet comparison.
Whatever you choose, finish a session with a small independent attempt. For readings, write the claim and its limitation; for a problem, solve a variation. That is the part that tells you whether the help was useful.
Frequently asked questions
Is NotebookLM now called Gemini Notebook?
Yes. Google announced the rename on 16 July 2026. It remains a standalone product, and older material may still call it NotebookLM.
Is NotebookLM better than ChatGPT for lecture notes?
A source notebook is a useful starting point for navigating several documents. ChatGPT is useful for directed conversation and practice. Both can work with supplied lecture material, so test the same excerpt and verify the result.
Does using sources prevent hallucinations?
No. A tool can misread a passage, cite something that does not support the claim, or omit a missing source. Open citations and check the original context.
Can either tool write my literature review?
They can help organise or investigate permitted material, but you need to read and evaluate the sources, develop the argument and follow your assessment’s AI policy. A generated synthesis is not verified research.