# Glasp vs SummifyYT (Summarize YouTube Comments)

Glasp records 889,564 monthly visits with -14.1% month-over-month growth and Freemium pricing. SummifyYT (Summarize YouTube Comments) records 0 monthly visits with — growth and Free pricing.

| Metric | [Glasp](https://openaitools.app/tool/glasp) | [SummifyYT (Summarize YouTube Comments)](https://openaitools.app/tool/summifyyt) |
| :--- | :--- | :--- |
| Website URL | https://glasp.co | https://chrome.google.com/webstore/detail/summifyyt-summarize-youtu/mcjgidambippeaajehcfimmephgholco |
| Categories | AI Research Tool, AI Agent, AI Summarizer, AI Youtube Summary | AI Youtube Summary, AI Summarizer, AI Chatbot, AI Assistant |
| Pricing Model | Freemium | Free |
| Monthly Visits | 889,564 | 0 |
| MoM Growth Rate | -14.1% | — |
| Primary Market | United States | Global |
| Direct Visits | 400,603 | 0 |
| Review Score | 4.2 | 1.9 |
| Saved Count | 12 | 4 |
| Supported Platforms | Website | Browser Extension |

## Glasp

Glasp started from a simple observation: most people highlight things they never look at again. Instead of trapping highlights inside one app, Glasp makes them social. Install the extension, highlight a paragraph on any site or a line in a YouTube transcript, and it lands in your Glasp profile where you can add notes and tags. Because highlights are public by default unless you make them private, a feed of what like-minded people are reading and marking emerges — you can follow other users, see what resonates, and discover sources you would not have found on your own.

Your library becomes the raw material for AI features. Glasp can summarize a long article, a PDF or a YouTube video so you can decide whether it deserves reading, and it can organize what you have already saved into themes. The standout feature is the AI clone: by training on your own accumulated highlights and notes, it produces something that answers in the shape of your interests and reading history. There is also a digital-legacy angle, letting you hand your accumulated knowledge to someone else.

Glasp is free to start, with paid tiers for heavier use and greater AI capacity. Its real niche is learners, researchers, students and content curators who treat annotation as a public, collaborative practice rather than a private bookmark folder — and who want their saved material to do work for them later instead of gathering dust.

**Pricing & Plans:** Freemium. A free tier covers the core highlighting, saving and sharing features with limited AI usage; paid plans add higher AI limits and additional capacity. Check glasp.co for current tier pricing, as it is not published in our listing data.

- **Web and YouTube highlighting:** Mark up passages on any website or lines in a YouTube transcript from a browser extension, then keep them in one searchable library.
- **Social learning feed:** Highlights are shared publicly by default, so you can follow other users, react to their picks and discover sources through people with similar interests.
- **AI summarization:** Generate summaries of long articles, PDFs and YouTube videos to judge relevance fast and to digest what you have already saved.
- **Your own AI clone:** Trained on your accumulated highlights and notes, the AI clone answers in the shape of your reading history and areas of interest.
- **Notes, tags and Kindle import:** Add your own commentary and tags to every highlight, and bring in Kindle highlights so your reading lives in one place.

**Strengths:** Turns throwaway highlighting into a genuinely reusable, searchable library; The social feed surfaces sources through people rather than an opaque algorithm; AI summarization and the AI clone are built on your own saved material, not generic content; Works across web pages, YouTube, PDFs and Kindle imports in one place

**Limitations:** Public-by-default sharing is not for everyone; private lives behind a toggle you have to remember; The AI clone only becomes useful after you have accumulated a real body of highlights; Free-tier AI usage is limited, so heavy summarization pushes you to a paid plan

[Profile (Markdown)](https://openaitools.app/tool/glasp.md)

## SummifyYT (Summarize YouTube Comments)

SummifyYT is a browser extension for people who want to understand how an audience reacted to a video without manually reading through a comment thread that may run to thousands of entries. It embeds directly into the YouTube watch page, adds a summary button to the interface, and returns a short digest of the comment section covering the points viewers repeat, praise, or push back on.

Unlike many summarizers that charge for API usage, SummifyYT leans on the ChatGPT session already active in your browser. That design keeps the tool free, but it also means you need to be logged in to ChatGPT for it to work at all. The extension exposes a small settings panel where you can switch on GPT-4, toggle auto-start so a summary is generated the moment a watch page loads, and pick the language you want the summary written in.

The extension has been on the Chrome Web Store for years and is small (roughly 140 KB). Development has slowed — the last published update dates to April 2023 — and the rating sits at a modest 2.8 out of 5. It remains a functional, free option for a quick read on a comment section, especially for creators and researchers triaging audience feedback at scale.

**Pricing & Plans:** Completely free. The extension itself costs nothing and has no in-app purchases; it reuses your existing ChatGPT account, so any costs are whatever your ChatGPT plan already covers.

- **Comment section summarization:** Turns a long YouTube comment thread into a short, readable digest of the main points viewers are making.
- **Embedded on the watch page:** Adds its controls directly to YouTube's UI, so you can trigger a summary without leaving the video you are watching.
- **Language selection:** Lets you choose which language the generated summary is written in, useful for multi-language audiences.
- **GPT-4 toggle and auto-start:** An optional setting switches summarization to GPT-4, and another can fire the summary automatically whenever a watch page loads.
- **Uses your ChatGPT session:** No separate API key or subscription — the extension works through the ChatGPT login you already have in the browser.

**Strengths:** Free to use with no subscription or API key; Lives inside YouTube, so no copy-pasting links between tools; Adjustable summary language and a GPT-4 option; Very small download size and quick to install

**Limitations:** Requires you to be signed in to ChatGPT, so it is unusable without an account; Last updated in April 2023 and receives infrequent maintenance; Modest user rating (2.8/5) suggests inconsistent results for some users

[Profile (Markdown)](https://openaitools.app/tool/summifyyt.md)

## Frequently Asked Questions

### How do Glasp and SummifyYT (Summarize YouTube Comments) compare in monthly traffic?

Glasp has 889,564 monthly visits, while SummifyYT (Summarize YouTube Comments) has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Glasp has a month-over-month growth rate of -14.1%; SummifyYT (Summarize YouTube Comments) has —.

### How does pricing compare?

Glasp: Freemium. Freemium. A free tier covers the core highlighting, saving and sharing features with limited AI usage; paid plans add higher AI limits and additional capacity. Check glasp.co for current tier pricing, as it is not published in our listing data. SummifyYT (Summarize YouTube Comments): Free. Completely free. The extension itself costs nothing and has no in-app purchases; it reuses your existing ChatGPT account, so any costs are whatever your ChatGPT plan already covers.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Notion](https://openaitools.app/tool/t) | 173,441,670 | +0.1% | Freemium | The AI workspace where teams and agents get work done together | [.md](https://openaitools.app/tool/t.md) |
| 2 | [Perplexity](https://openaitools.app/tool/perplexity-ai) | 88,310,223 | -3.7% | Freemium | Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models. | [.md](https://openaitools.app/tool/perplexity-ai.md) |
| 3 | [SciSpace](https://openaitools.app/tool/scispace) | 4,464,111 | +8.6% | Freemium | Excels at deep scientific literature reading and analysis, whereas Glasp targets general web and video content curation. | [.md](https://openaitools.app/tool/scispace.md) |
| 4 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | Offers a broader multi-model sidebar for quick page summarization, but lacks Glasp's community-driven public highlighting and curation. | [.md](https://openaitools.app/tool/sider.md) |
| 5 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | [.md](https://openaitools.app/tool/merlin-ai-plugins.md) |
| 6 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) |
| 7 | [Scholarcy](https://openaitools.app/tool/scholarcy) | 195,058 | +4.6% | Freemium | Converts academic papers into structured summary flashcards, but lacks Glasp's broad web article and YouTube highlighting capabilities. | [.md](https://openaitools.app/tool/scholarcy.md) |
| 8 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) |
| 9 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Summarize, bookmark and write with AI right in your browser | [.md](https://openaitools.app/tool/kome-ai.md) |
| 10 | [Noiz](https://openaitools.app/tool/noiz) | 148,844 | -27.8% | Free Trial | Summarize any YouTube video into key ideas and timestamped notes in seconds. | [.md](https://openaitools.app/tool/noiz.md) |

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Source: https://openaitools.app/compare/glasp-vs-summifyyt

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