125x vs Glasp

Quick answer

Short answer: Glasp is a highlighter with a YouTube summary feature that runs through ChatGPT or Claude. 125x is a web app that summarizes every new upload from your YouTube subscriptions, with a verdict, 5 takeaways, the spoiler, and Actionable and Lessons tabs.

What 125x is: 125x is a web app at 125x.app. You connect your YouTube subscriptions, and it gives you a feed of the latest videos from the channels you follow, each with a summary: a verdict, the 5 key takeaways, and the spoiler, plus Actionable and Lessons tabs with more tips. You read that and decide what's actually worth opening.

Updated October 30, 2026. Competitor details come from each tool's own website, checked on that date.

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Side by side

Tool	How you use it	Works from your subscriptions?	What you get
125x	Web app. Connect your YouTube subscriptions once	Yes, every new upload from channels you follow	Verdict (watch, skim, or skip), 5 takeaways, the spoiler, Actionable and Lessons tabs
Glasp	Extension beside the video, or paste a link	One video at a time	Transcript and a summary through ChatGPT or Claude, plus web and Kindle highlights

What Glasp does well

Transcript beside the video.
Highlights across web pages, PDFs and Kindle.
Integrations with Notion, Obsidian, Readwise and more.

What 125x does well

Works from the subscriptions you already have. Nothing to paste.
Every video gets a verdict: watch, skim, or skip.
5 takeaways and the spoiler, so you get the answer the title teases.
Actionable and Lessons tabs pull out the steps and the lessons.
Topic chips let you filter the feed to Fitness, Money and more.

Which to pick

Pick Glasp if you already highlight everything and want videos in the same library.
Pick 125x if most of what you watch comes from channels you already follow and you want every new upload sorted before you open YouTube.
Plenty of people use both: 125x to decide what's worth it, and a one-off tool for random links friends send.

Our tip

Whatever you use, judge a summary by one thing: after reading it, do you know whether to open the video? If you still have to watch to find out, the summary failed.

FAQ: questions people ask

Does Glasp summarize YouTube?

Yes. Its site says you can paste a link or use the extension, and summarize with ChatGPT or Claude.

Can I use 125x and Glasp together?

Yes. Use 125x to decide which videos are worth it, then Glasp to highlight the ones you watch.