Best AI YouTube Summarizers in 2026: 4 Extensions Tested
We're living in a fast-moving world, and thousands of learners are concerned daily about their education and skills. With the rise of AI, the demand for qualifications has become even higher. Most importantly, it has changed the way people learn. Today, learners are looking for sources that provide valuable knowledge for free. One of them is YouTube. Students know that search engines and even AI tools can't always handle very specific queries, while niche YouTube creators can! That's where YouTube Summarizers step in.
YouTube Summarizers help you save hours of watching and extract the key insights from the videos. We compared four reliable browser extensions on the Chrome Web Store for you: Clarify AI: YouTube Summaries, YouTube Summary with ChatGPT & Claude by Glasp, LiveWiki: YouTube Summarizer, and Eightify: AI YouTube Summarizer.
How we compared
The criteria for analysis are summary speed, level of detail, pricing, and features. Along with personal testing, we used information from the companies' official websites, the Chrome Web Store, Google search and publicly available reviews.
Note: we build Clarify AI, so we have an obvious interest here. To keep the comparison fair, we ran the same videos with the same settings through every extension.
We ran the same three videos through each extension, choosing detailed summary on the free plan or trial:
Short explainer (16 min, English, clear speech): If Your Cat Sleeps on Your Bed
Short tutorial (14 min, Japanese): My makeup tutorial
Long lecture (50 min, English, specialist terms): Introduction to Human Behavioral Biology
Note: Please, note that results may vary in some summarizers based on model choice and your own internet speed.
Comparison results and conclusions
Clarify AI | Glasp | LiveWiki | Eightify | |
|---|---|---|---|---|
Short explainer (English) | 4 s | 4 s | 13 s | 7 s |
Short explainer (non- English) | 6 s | 6 s | 12 s | 9 s |
Long lecture (English) | 5 s | 5 s | 18 s | 4 s for the first 30 min; longer videos need a paid plan but can be up to 10h long |
Average speed | 5 s | 5 s | ~14 s | ~7 s |
Level of detail | Detailed | Detailed | Very detailed | Detailed |
Free plan | 3 summaries/day for videos under 30 min + 1/day for longer ones | 3 basic summaries/day | Free | 7-day free trial |
Paid plans | Basic $2.99/month | Pro $15/month | – | $9.99/month |
Features | AI chat, timestamps, model choice (OpenAI, Google, DeepSeek, Xiaomi, Nvidia), comments summary, export (TXT, DOCX, PDF, Google Docs, link), bookmarks, custom prompts. | AI chat, timestamps, model choice (ChatGPT, Claude, Gemini, Mistral), highlights, YouTube Channel Tracking , PDF Uploads & Summaries, PDF Chat, transcript, Notion export. | AI chat, timestamps. | Timestamps, top comments overview, transcript. |
Level of detail: detailed
Response speed: very fast
Pricing model: freemium
Free plan: 3 summaries/day for short videos (<30mins) + 1/ day for long ones (>30mins). Limited features' use.
Basic ($2.99/month): unlimited summaries + limited features
Pro ($4.99/month): unlimited summaries + unlimited featuresFeatures: AI assistant: 'Ask about the video', timestamps, bookmarks, models choice, comments summary, custom prompts, export (txt, docs, pdf) + shareable link.
What stands out? Works without sign-in or with one-step sign-in + very broad model choice + comments summary.
Level of detail: detailed
Response speed: very fast
Pricing model: freemium
Free: 3 basic summaries/day + unlimited public highlights. Limited features' use.
Pro ($15/month): unlimited summaries + unlimited private highlights + limited features' use.
Unlimited ($36/month): unlimited summaries + unlimited features
Features: highlights, YouTube Channel Tracking , PDF Uploads & Summaries, PDF Chat, AI Chat, transcript, export to Notion, transcript.
What stands out? YouTube Channel tracking, PDF Summaries & chat, export to Notion.
Level of detail: very detailed
Response speed: medium
Pricing model: free for now
Features: timestamps, AI chat.
What stands out? Currently fully free, minimalistic feature set.
Level of detail: detailed
Response speed: fast
Pricing model: paid plan ($9.99/month) for unlimited usage, 7-day free trial
Features: insights extraction, timestamps, top comments overview, transcript.
What stands out? Top comments overview.
So which YouTube summarizer should you pick?
Best free plan for studying: Clarify AI (daily free summaries, including long videos, plus AI chat and model choice).
Best for research beyond YouTube: Glasp
Best completely free option: LiveWiki
Best for very long videos: Eightify, if you're fine with a paid plan after the trial.
All in all, what AI Summarizer to choose depends on your own criteria and unique needs, even personal taste in UI can make an impact. We created this comparison to save you time on the research. If you're looking for a flexible and customizable option with a generous free plan, we really recommend trying Clarify AI: YouTube Summaries. We're continuously improving the user experience based on feedback and offer promo codes for holidays.
Welcome to our community and grab your gift: promo code for the monthly plans - CLARIFY15 (15% off)! 🩵 💜 💛
*All information in this comparison is accurate as of September 2026. Prices and features may change, so check each tool's website for current details.
