Compare MensorAI and Obsidian for YouTube and research notes. Obsidian gives you local Markdown files, links and a graph view you control. MensorAI saves articles and YouTube moments from your browser, lets you ask across them, and exports what you find as Markdown you can drop into your vault.
Last reviewed: October 2026. The MensorAI team wrote this comparison. We try to be fair and accurate, and we’d encourage you to try both tools.
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.
| Feature | MensorAI | Obsidian |
|---|---|---|
| Saves the YouTube moment you’re watching | ||
| AI Q&A about video content | Plugin | |
| Chrome extension for YouTube | ||
| Automatic video metadata | ||
| Knowledge graph | ||
| Local-first storage | ||
| Plugin ecosystem | ||
| Markdown | Export | |
| Free tier available | Saving is free |
You research newsletters, articles or scripts from what you read and watch. You save sources as you go, and when you write you want to ask across them and get answers that point back to the passage.
If you want summaries, flashcards or spaced repetition, a tool built for that will suit you better.
Start researching freeWriters and researchers who want full control over local Markdown files and like linking their notes by hand
Pricing: Free for personal use, Sync from $4/month billed annually
They do different jobs. Obsidian is where you keep and link your own notes as local Markdown files. MensorAI saves YouTube moments and the articles you read from your browser, lets you ask across them, and links each answer to its source. You can use both.
Yes. Copy a piece as Markdown or download the .md file and drop it into your vault. Citations and links to the sources come with it. There’s no automatic sync.
Obsidian. It has bidirectional links, a graph view and plugins, and MensorAI has none of those. MensorAI is for the step before you write: finding what you saved and quoting it with the source attached.
Saving is free. Asking and finding videos on YouTube need an active trial or a paid plan. You get 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 how many AI requests you get per day.
Save a few sources as you read and watch this week, then ask across them when you sit down to write. Saving is free.
7-day free trial of Pro features with a limited AI allowance. No credit card required.