Gemini Notebook (formerly NotebookLM — renamed in July 2026, same product and free tier) Video Overviews are excellent. Google's narration quality is at the top of the market, the source grounding is reliable, the chat is fast, Explainer videos come in 70+ languages, and the free Standard tier includes a daily allowance. If your goal is to watch or listen to an AI-narrated walkthrough of a set of sources once, it is among the best free tools on the internet.
The honest limitation is length and what comes after. A Video Overview is a short summary, not a lecture, and although the Studio panel now makes flashcards and quizzes beside it, they are a self-check: no spaced-repetition schedule, no graded timed exam, no export to Anki or Quizlet, no live recording, and no real notes editor. For passive review that's fine. For exam prep or a training rollout that has to move material into long-term memory, you'll find yourself reaching for a second tool.
Scholarly takes the same starting point — narrated AI video from your sources — and goes longer and further: chaptered lectures up to 45 minutes in six teaching styles, with a click-to-jump transcript, captions, and question checkpoints. The same upload becomes flashcards on an SM-2 spaced-repetition schedule, a graded practice exam, a three-speaker podcast up to 60 minutes, a slide deck, and editable notes. You can also record live lectures, switch between AI models, share a team library, and export decks to Anki. If a short video overview is the only thing you need, Gemini Notebook is brilliant. If the video is the start of studying, Scholarly is the better fit.
