MyOwnArcWhat each one is actually for
NotebookLM (Gemini Notebook) is a general-purpose "notebook" for understanding a set of sources, built to help you explore, summarise, and study a body of material quickly, with a strong emphasis on formats beyond reading: audio-style overviews, study guides, quizzes, mind maps. It's aimed at anyone digesting information, not specifically at students producing a piece of work that will be checked.
MyOwnArc is narrower on purpose: it's built around the specific moment a claim has to survive someone else clicking through to check it (a supervisor, a marker, a peer reviewer) and around producing the actual deliverable (a note, a draft, a reference list in your department's citation style), not just an answer to read and move on from.
Source handling
NotebookLM's free tier accepts up to 50 sources per notebook and up to 100 notebooks, across a much wider range of formats than a typical research tool: PDFs, Google Docs/Slides/Sheets, web URLs, YouTube videos, images, and audio files. That range is a genuine strength if your research material isn't only PDFs: a recorded lecture, a set of slides, a YouTube explainer all go into the same notebook as your papers.
MyOwnArc's free tier holds 30 documents with 25 cited AI answers a month, and it's deliberately scoped to documents (PDFs and the academic-paper case specifically) rather than trying to be a notebook for every kind of source. If your literature review lives almost entirely in PDFs, that scope isn't a limitation; if a meaningful part of your research material is video or audio, NotebookLM covers ground MyOwnArc doesn't.
Citations
Both tools ground their answers in the sources you've actually given them rather than general training knowledge, and both show citations back to those sources. This is the meaningful thing they have in common, and the reason they get compared at all. The difference is in what clicking a citation gets you. MyOwnArc's citation opens directly to the exact passage highlighted in the original source PDF, every time, by design. The click-through to the highlighted paragraph is the product's central mechanic, not a secondary feature. NotebookLM's citations point back to the supporting source and passage as well; whether that lands you on the precise highlighted paragraph in the original document, versus a source-level reference, can vary by source type, since not every format it accepts (a YouTube video, an image) has a "passage" in the same sense a PDF does.
PDF workflow
NotebookLM handles PDFs as one of several source types among Docs, Slides, Sheets, web pages, video and audio: a generalist's treatment. MyOwnArc treats the PDF as the primary object: a built-in reader with highlighting, sitting in the same place as your AI answers and your notes, so you're not exporting a citation somewhere else to actually go read it.
Organisation
NotebookLM organises material into notebooks, a strong unit for "everything about this one topic or course," and good for that. It doesn't, as a rule, build you a formatted reference list in a citation style as you write.
MyOwnArc is built around producing a submittable piece of work across a whole project: notes with an @-mention citation system that assembles your reference list as you write, switchable across APA 7, Harvard, Chicago, MLA, Vancouver and IEEE; extraction matrices for pulling the same fact out of many papers at once; and a pooled, ranked list of everything your library cites, which tends to surface the paper your field keeps referencing that you haven't read yet. These are the jobs that come after "understand my sources," which is where NotebookLM's strengths are concentrated.
Price
This is the category where NotebookLM wins outright: its free tier costs nothing, full stop, no institutional email required, and its Plus tier is bundled into a wider Google AI Plus subscription at roughly $5/month for a broader set of Google AI tools, not a purchase you make for research alone. MyOwnArc's free plan also costs nothing, but its paid tier ($5/month, billed yearly, for students with a verified academic email) is a subscription in its own right, for one job.
If price is the only variable, NotebookLM's free tier is the harder one to argue against: it's free, from a company not going anywhere, with a generous source cap. The honest case for paying anything at all is the narrower one made above: what you get for it.
Both ground answers in your sources. What differs is what happens after you click the citation, and what you're left holding when the writing is due.
Where NotebookLM is the better choice
To say it plainly, since the plan for this comparison was to be honest about it rather than to win every row: if your research material spans video, audio, slides and web pages as much as PDFs; if Audio Overviews help you study (plenty of people find a spoken-conversation summary easier to absorb on a commute than another block of text); or if you just want a capable, free, source-grounded assistant without any student-status hoops, NotebookLM (Gemini Notebook) is a strong, free tool, and switching away from it for the sake of switching isn't the right call.
Where MyOwnArc is the better choice
If what you're producing is a piece of academic writing that has to survive a marker or supervisor checking your citations (a dissertation, a thesis chapter, a literature review) and you want the passage-level click-through, the extraction matrices, and a reference list that builds itself in your department's citation style as you go, that's the specific, narrower job MyOwnArc is built around, and it's the reason it exists as a separate tool rather than a notebook feature.
Try the specific job, not the general one
The free plan holds 30 documents and 25 cited AI answers a month, no card required. That's enough to see whether the passage-level click-through and the reference-list-as-you-write actually save you time on a real chapter.
Start freeStudents: verify an institutional email to get the $5/month price, billed yearly.
NotebookLM's July 2026 rename to Gemini Notebook is confirmed directly from Google's own Workspace Updates blog. Its current free/paid source limits and feature set are drawn from third-party reporting on Google's public plan pages, since this environment could not directly reach notebooklm.google.com or notebook.google to confirm every figure at the time of writing; check Google's current pricing page before you decide. Trademarks belong to their owners; MyOwnArc is not affiliated with Google or Gemini Notebook.