Magpie

The point of the video, before you spend an hour on it.

Magpie puts a quiet, sourced breakdown beside any YouTube video or long article. One click, no new tabs, and every claim links straight to the exact second it was said.

Add to Chrome — FreeTry Live Demo
✓ No account needed to start✓ Click-to-seek timestamp citations✓ Zero background tracking
youtube.com/watch?v=zjkBMFhNj_g · Andrej Karpathy
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Live Video1h 00m
Intro to Large Language Models by Andrej Karpathy
💡 Click any timestamp citation in the summary on the right to seek this video immediately.
Magpie1h 00m
Key Points · Click timestamp to verify
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LLMs are two files: a parameters weights file (~140GB) and a run file (~500 lines of C). [04:18]
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Pretraining compresses ~10TB of internet text into lossy zip parameters through thousands of GPUs. [11:35]
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Fine-tuning replaces random text completion with conversational assistant behavior via Q&A doc pairs. [24:10]
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Reinforcement learning from human feedback (RLHF) optimizes models to produce answers humans rank highest. [38:45]
Instant Workflow

How Magpie fits your reading

Designed to get out of your way and deliver verified facts in seconds.

1

Open any video or article

Navigate to any YouTube video, long-form essay, news publication, or technical documentation.

2

Click once or hit shortcut

Click the toolbar icon or press Cmd+Shift+K to generate an immediate summary beside the content.

3

Click citations to verify

Every sentence ends with a timestamp or paragraph badge. Click any point to jump the video or scroll the page straight to that line.

Why Magpie

Built for reading, not chatting

ExperienceMagpieGeneric AI Chatbots
Friction1 click on current pageCopy link, open tab, paste, wait
Fact verificationClickable timestamp & paragraph linksUnverified claims, hallucination risk
Background footprintZero background polling or tab scrapingConstant network & memory tracking
Shared network cacheInstant free replays on popular sourcesRe-runs full inference bill every time
Core Capabilities

Built to verify, not just summarize

Every claim is tied directly to its source so you never have to guess whether an AI hallucinated.

Citations

Every point is a link

Each line of the summary ends with the exact timestamp or paragraph it came from. Click it and the video seeks there, or the page scrolls directly to the block. You can check any claim in a second.

Depth on Demand

Short, Deep, and Quotes

Start with the bullet breakdown. When a topic demands more depth, switch to the Deep tab for full structured analysis or Quotes for highlighted numbers and verbatim excerpts.

Zero Polling

Never runs in the background

Nothing summarises on page load. Magpie holds no background page-scraping permissions: access is granted only when you click, saving battery, memory, and tokens.

Shared Cache

Popular sources stay free

A video transcript never changes. Once someone requests a summary of a public source, it is cached centrally and delivered instantly to everyone else for free, without counting against daily limits.

Ready to speed up your reading?

Install Magpie in five seconds. Free users get 2 daily summaries and unlimited access to shared summaries with zero setup.

Add to Chrome — Free