An AI note tool for people who write: ask a question across the videos and articles you saved, see which sources the answer used, and follow each claim back to its passage.
Last reviewed: October 2026
MensorAI started as a YouTube note-taking tool for learners. Now it saves articles, passages and YouTube moments as you go, and when you sit down to write, you ask across all of them. Every answer links back to the passage it came from.
Sound familiar? Here’s what usually gets in the way.
Here’s what it does for this kind of work today.
Questions go to everything you saved by default: articles, videos, passages and your own notes. Type @ to narrow it to a few sources.
The answer lists the sources it used, and every claim links to its passage. For a video it opens at the moment when the captions have timestamps, and quotes are checked against the source text.
If your library doesn’t cover a question in a piece, Find on YouTube looks for videos on it. It adds them to the piece and your library, then asks again.
Keep the claims you’ll use in a piece and copy them into your own editor. MensorAI doesn’t draft for you, and answers depend on the captions and text a source has.
It helps you write from what you read and watch. Save articles, YouTube moments and your own notes, then ask a question across all of it. Every claim in the answer links to the passage it came from, and you can keep the claims you’ll use in a piece and copy it into your editor.
Saving is free. Asking across your library and finding videos on YouTube need an active trial or a paid plan, and there’s a 7-day free trial of Pro features with a limited AI allowance. No credit card required. After that, plans are $9, $19 or $22 a month, and they differ only in AI requests per day.
The browser extension works in Chrome, Edge, Brave and Arc on desktop, and it opens as a popup. The web app runs in your browser and takes YouTube links. There’s no mobile app.
Answers depend on the captions and text a source has. You can save a video without captions, but MensorAI will only have your own note to work with for it.
7-day free trial of Pro features with a limited AI allowance. No credit card required. Saving is free, and asking across your library needs an active trial or a paid plan.