Best YouTube Summarizer Extensions Compared
An honest, side-by-side comparison of the top 10 YouTube video summarizer tools in 2026. We built PeekaTube because no existing tool gave us exactly what we wanted — here's how they all stack up, with real pricing and features.
What Makes PeekaTube Different
Most YouTube summarizers do one thing: read the transcript and spit out bullet points. PeekaTube goes further. It fetches and analyzes YouTube comments alongside the transcript to give you a richer, more complete picture of the video — including what the community thinks, corrections viewers have made, and context the creator may have missed.
PeekaTube is not a pure summarizer. It's a video research tool. You get the AI summary, the full transcript, community sentiment from comments, and one-click export — all from a single Chrome extension click. Whether you're a student researching a topic or a professional evaluating content, PeekaTube gives you the full picture in seconds.
On top of that, PeekaTube supports 10+ output languages. Summarize a Japanese lecture in English, or a Spanish podcast in Chinese — the language barrier disappears.
Feature Comparison at a Glance
| Tool | Speed | Pricing | Free Tier | Comments | Multilingual | Export | Transcript | Best For |
|---|---|---|---|---|---|---|---|---|
| PeekaTube | ~7s | $5.99/mo | 3 free trials | ✓ | ✓ | ✓ | ✓ | Deep research, multilingual, full video understanding with comments |
| Eightify | ~5s | $4.99/mo | 3 total | ✓ | ✓ | ✗ | ✓ | Quick timestamped previews |
| Glasp (ChatGPT & Claude) | ~3-5s | Free / $8.99/mo Pro | Unlimited (desktop) | ✗ | ✓ | ✗ | ✓ | Free power users who want model choice |
| TubeOnAI | ~5-8s | $9.99/mo | 200 free minutes | ✗ | ✓ | ✓ | ✓ | Content repurposing & no-subtitle videos |
| NoteGPT | ~8-12s | Free / Paid tiers | 15 quotas/mo | ✗ | ✓ | ✓ | ✓ | Note-taking & mind maps |
| Notta | ~10s | $8.25/mo | 1 video total | ✗ | ✓ | ✓ | ✓ | Meeting transcription (YouTube is secondary) |
| Kome AI | ~5s | $5.99/mo | 5 credits | ✗ | ✗ | ✗ | ✓ | Bookmarking + summarizing |
| Google NotebookLM | ~15-30s | Free / $19.99/mo | Generous (50 sources) | ✗ | ✗ | ✓ | ✓ | Multi-source research & audio overviews |
| DeArrow | instant | $1 (one-time) | Free (optional $1) | ✗ | ✗ | ✗ | ✗ | Removing clickbait titles/thumbnails |
| QuickerAI | ~3-5s | Free / Paid | Limited | ✗ | ✓ | ✗ | ✗ | Speed-focused summaries |
| Clarify AI | ~5s | Free | Free | ✗ | ✗ | ✗ | ✗ | Simple, free one-click summaries |
Detailed Comparisons
PeekaTube vs Eightify
Eightify is one of the fastest YouTube summarizers at about 5 seconds, delivering clean timestamped bullet points. It's used by 100,000+ users daily and also offers a "Top Comments Overview" feature for comment sentiment. Eightify supports 40+ output languages and is available on Chrome, Safari, iOS, and Android. At $4.99/month ($59.99/year), it's competitively priced but has a very limited free tier — only 3 summaries total, restricted to videos under 30 minutes.
Eightify Strengths
Very fast (~5s), 100K+ daily users, clean timestamped bullets, available on iOS/Android too, Top Comments Overview for sentiment, 40+ output languages.
Why Choose PeekaTube Instead
While Eightify offers a basic comment overview, PeekaTube integrates comment insights directly into the summary itself — giving you a unified view instead of a separate tab. PeekaTube also includes one-click summary + transcript export and focuses on deep understanding over quick previews. If you want more than bullet points, PeekaTube gives you the full research picture.
PeekaTube vs Glasp (YouTube Summary with ChatGPT & Claude)
Glasp is the most popular YouTube summarizer with 2M+ users and a truly generous free tier — unlimited desktop summaries at no cost. It supports multiple AI models (ChatGPT, Claude, Gemini, Mistral) and works on articles and PDFs too. The Pro plan ($8.99/month) adds mobile access. The trade-off: summary quality varies by model, there's no comment analysis, and no built-in cross-language translation.
Glasp Strengths
Massive 2M+ user base, truly free unlimited desktop summaries, choose between ChatGPT/Claude/Gemini/Mistral, works on articles & PDFs, available on Chrome/Safari/Firefox/Edge/Brave/Opera.
Why Choose PeekaTube Instead
PeekaTube provides consistent, high-quality summaries without needing to choose or switch between AI models. It fetches YouTube comments for community context that Glasp doesn't offer, and natively translates output into 10+ languages. If you want reliable depth over flexible model choice, PeekaTube delivers.
PeekaTube vs TubeOnAI
TubeOnAI is a versatile summarizer that works on videos without transcripts by processing audio directly. It claims 99% accuracy and offers 130+ templates for repurposing summaries into blog posts, social media content, and newsletters. Available on web, Android, and iOS. However, at $9.99/month ($20/month after the first month for Pro), it's one of the most expensive options and doesn't offer comment analysis.
TubeOnAI Strengths
Works on videos without subtitles (audio processing), 130+ repurposing templates (blog posts, social media, newsletters), 99% claimed accuracy, available on web/Android/iOS.
Why Choose PeekaTube Instead
PeekaTube costs nearly half the price ($5.99 vs $9.99+/mo) while offering YouTube comment analysis that TubeOnAI lacks entirely. If your goal is understanding videos deeply rather than repurposing them into marketing content, PeekaTube is the more focused and affordable choice.
PeekaTube vs NoteGPT
NoteGPT is an all-in-one AI learning assistant combining video summarization with mind maps, AI chat, note-taking, and even AI presentations. It handles videos without subtitles (up to 150 minutes), supports batch summarizing up to 20 videos, and uses ChatGPT 4 and Claude 3. The free tier gives 15 quotas per month. However, the interface feels cluttered with features, and it doesn't analyze viewer comments.
NoteGPT Strengths
Mind-map generation, AI chat for Q&A, works without subtitles, batch summarize 20 videos, multi-platform (not just YouTube), built-in note organization.
Why Choose PeekaTube Instead
PeekaTube is faster, more focused, and includes YouTube comment analysis that NoteGPT lacks. NoteGPT is a Swiss Army knife — PeekaTube is a sharp scalpel. If your primary use case is YouTube and you want speed + depth without feature bloat, PeekaTube is the sharper tool.
PeekaTube vs Notta
Notta is primarily an AI meeting transcription platform (Zoom, Google Meet, Webex) that also supports YouTube video summarization as a secondary feature. It supports 58 transcription languages and 42 translation languages with 98.86% accuracy. The Chrome extension generates summaries directly while watching. However, the free tier is extremely limited — only 1 YouTube video total — and the pricing reflects its meeting-focused feature set.
Notta Strengths
98.86% transcription accuracy, 58 transcription languages, works across Zoom/Meet/Webex, generates chapters and action items, strong meeting workflow integration.
Why Choose PeekaTube Instead
Notta is a meeting tool that happens to do YouTube; PeekaTube is built specifically for YouTube video research. PeekaTube includes comment analysis, is more affordable for YouTube-only use, and doesn't charge for meeting features you don't need.
PeekaTube vs Kome AI
Kome AI combines summarization with bookmarking and AI-assisted writing. It works on articles, news, YouTube videos, and websites. It also includes a color palette extractor and content generation from bookmarks. Available across Chrome, Firefox, Edge, Opera, and Brave. However, user reviews report reliability issues — the extension sometimes stops working, shortcuts fail, and subscription management can be frustrating.
Kome AI Strengths
All-in-one bookmark manager + summarizer, AI writing assistant, works on any webpage, transcript generator in 120+ languages, color palette extraction.
Why Choose PeekaTube Instead
PeekaTube is purpose-built for YouTube with deeper features like comment analysis, while Kome AI spreads across many use cases with reported reliability issues. Same price ($5.99/mo), but PeekaTube delivers a more reliable, focused YouTube experience.
PeekaTube vs Google NotebookLM
NotebookLM is Google's AI research assistant — not a YouTube extension, but a multi-source research platform. You add YouTube URLs alongside PDFs, Google Docs, and audio files, then interact with all of them as a unified knowledge base. It generates Audio Overviews (podcast-style discussions) and Video Overviews of your sources. The free tier is generous (50 sources per notebook, 25 audio overviews/day), with Plus at $19.99/month via Google One AI Premium. NotebookLM is built for deep, multi-document research — not quick video previews.
NotebookLM Strengths
Multi-source research (YouTube + PDFs + Docs + audio), Audio & Video Overviews, inline citations from transcripts, generous free tier, backed by Google's AI infrastructure.
Why Choose PeekaTube Instead
NotebookLM requires you to leave YouTube, create a notebook, and add sources manually — a research workflow, not a quick-check tool. PeekaTube gives you instant summaries with comment analysis directly on YouTube in 7 seconds. For quick 'is this worth watching?' decisions, PeekaTube is dramatically faster. For deep multi-source research projects, NotebookLM shines — and PeekaTube's export feature makes it easy to feed summaries into NotebookLM when you need both.
PeekaTube vs DeArrow
DeArrow takes a completely different approach — it replaces clickbait titles and thumbnails with community-submitted alternatives. It doesn't summarize content at all. Crowdsourced titles are voted on by users, and when no submission exists, it auto-formats the original title and picks a random non-sponsor video frame as the thumbnail. It's a great complement to PeekaTube, not a replacement.
DeArrow Strengths
Crowdsourced honest titles and thumbnails, essentially free ($1 optional), great for cleaning up your YouTube feed, auto-avoids sponsor segments for thumbnails, open source.
Why Choose PeekaTube Instead
DeArrow fixes the title — PeekaTube tells you what's actually in the video. They solve different problems and work great together. Use DeArrow to clean your feed, and PeekaTube to decide if a video is worth your time with an AI summary, transcript, and comment analysis.
PeekaTube vs QuickerAI
QuickerAI markets itself as one of the fastest summarizers (claiming '3x faster than alternatives') with instant key points and multilingual support. It's lightweight and focused purely on speed. However, it lacks comment analysis, transcript access, and export features — making it best for quick, disposable summaries.
QuickerAI Strengths
Very fast output, multilingual support, lightweight extension, focused purely on speed and accuracy with minimal bloat.
Why Choose PeekaTube Instead
PeekaTube matches the multilingual capability while adding YouTube comment analysis, full transcript access, and one-click export. If you need more than a disposable summary — research context, community perspective, exportable notes — PeekaTube is the more complete tool.
PeekaTube vs Clarify AI
Clarify AI is a Gemini-powered summarizer that offers completely free, simple one-click summaries in about 5 seconds. No account required. It's the simplest option for casual users who want a basic overview without paying. However, it lacks comment analysis, multilingual output, transcript access, and export — just the bare-minimum summary.
Clarify AI Strengths
Completely free, Gemini-powered, simple one-click interface, fast (~5s), no account required, zero friction.
Why Choose PeekaTube Instead
PeekaTube provides deeper analysis with YouTube comment insights, supports 10+ output languages, includes full transcript access, and offers one-click export. For users who need more than a surface-level summary, PeekaTube turns a quick glance into real understanding.
Standout Feature: YouTube Comment Analysis
While Eightify offers a basic "Top Comments Overview" for sentiment, PeekaTube is the only YouTube summarizer that deeply integrates comment analysis into the summary itself. Comments often contain corrections, additional context, timestamps, expert opinions, and real-world experiences that the video doesn't cover. PeekaTube weaves these insights into your summary for a 360-degree understanding of both the content and how the community received it.
This is especially valuable for tutorials (where comments flag errors or better methods), product reviews (where real users share experiences), and controversial topics (where the comment section adds crucial nuance). Other tools either ignore comments entirely or show them as a separate, disconnected feature.
Ready to Try the Smarter Way?
Install PeekaTube and get AI summaries with integrated comment insights — directly on YouTube.