Researchers
Catch up on academic talks and tech conferences in minutes. Find the quotable moments and key conclusions fast.
See AI / ML examplesWave 1 / Beta
Understand a 30-minute video in 30 seconds.
Claude extracts the substance of any YouTube video — one-liner, key points, and timestamped chapters — so you can jump straight to what matters.
New sign-ups unlock Pro for the first 3 days — no card required.
- 500+Beta testers
- 10,000+Summaries generated
- 2Supported languages
- Powered by Claude
- Supabase
- Vercel
- Next.js 16
Use cases
Pull knowledge out of video — for every kind of viewer.
Researchers, students, creators, engineers — anyone whose day involves long-form video moves faster with SumTube.
Students & self-learners
Summarize hour-long lectures chapter by chapter. Extract exam-ready knowledge and paper-worthy quotes.
Browse learning channelsContent creators
Analyze competitor channels, brainstorm, and scaffold scripts faster. Understand video trends in three minutes.
Creator planRecruiters
Summarize engineer candidates' talks before interviews. Keep the decision trail in searchable text.
See hiring use caseCoaches & educators
Distribute videos with summaries so learners know exactly which chapter to watch.
Education examplesEngineers
Absorb OSS maintainer talks and engineering deep-dives. Capture design decisions and best practices fast.
See engineering examples
One-click summaries
Summaries start in 10 seconds on any captioned video.
Click the Chrome extension button. The side panel streams a one-liner, key points, and timestamped chapters — in that order.
- Automatic caption detection with multi-language fallback
- SSE streaming — the first line appears in seconds
- Summaries save automatically and stay in your history
Bilingual
Japanese-grade summary quality that sets SumTube apart.
A prompt tuned for Claude's Japanese comprehension preserves keigo, technical jargon, and industry nuance. Summarize English videos in Japanese — and Japanese videos in English — with cross-language output (Pro).
- Bidirectional Japanese↔English summaries
- Keigo and domain terminology preserved verbatim
- Independent public URLs per language
Chrome extension
Stay on YouTube — summary to scene jump without context switching.
Click a chapter inside the extension and the YouTube player seeks to that second. Summary and video live on the same page, so research, study, and content mining all get faster.
- Timestamp clicks jump the player instantly
- Summaries sync between the extension and the web app
- Extension auth uses single-use 60-second exchange tokens
Live behaviour
A ten-second clip tells the whole story.
Watch the actual screen recording as the summary streams in from the left.
Side-panel streaming summary recording (coming soon)
Comparison
Versus other tools and manual notes.
| Feature | SumTube | Manual notes | YouTubeSummary.ai | NoteGPT |
|---|---|---|---|---|
| One-liner + key points | ✓ | ✗ | ✓ | ✓ |
| Timestamped chapters | ✓ | ✗ | ✗ | ✓ |
| Jump to the exact scene | ✓ | ✗ | ✗ | ✗ |
| Japanese-tuned prompt | ✓ | ✗ | ✗ | ✗ |
| One-click Chrome extension | ✓ | ✗ | ✓ | ✗ |
| Shareable public URLs | ✓ | ✗ | ✗ | ✗ |
| Free tier | 3 / day | ✓ | 2 / day | 1 / day |
Beta testers
Feedback from people who've adopted SumTube.
“I ran SumTube across five keynote talks and caught up during my commute. Timestamp chapters mean I only watch the parts I actually care about.”
Beta tester (Researcher)AI research engineer “Japanese summarization quality is noticeably better. Other tools produce literal translations; SumTube preserves keigo and domain jargon.”
Beta tester (Product Manager)Product manager “The automatic chapter segmentation is surprisingly useful. From a one-hour talk I pull three chapters straight into my slide deck.”
Beta tester (Consultant)Strategy consultant “I watch 10+ research videos a week and the searchable history alone justifies the subscription. Couldn't go back.”
Beta tester (Graduate student)Graduate student — ML “The extension feels snappy — the first line streams in seconds and the side panel stays out of the way.”
Beta tester (Engineer)Frontend engineer “After upgrading, my video-review turnaround halved. Sharing knowledge with the team got much faster.”
Beta tester (Team Lead)Tech lead — SaaS startup
How it works
Get started in three steps.
Sign up, install the extension, hit summarize — each step takes about 30 seconds.
Add the extension to Chrome
Install from the store in one click. You can create your account afterwards.
Open any YouTube video
Click the extension button on a video page. Processing starts automatically if captions are available.
Read the summary
One-liner → key points → chapters appear in order. Click any chapter to jump straight to that part of the video.
Choose your plan
New sign-ups unlock Pro features for the first 3 days — no card required. Cancel anytime.
Yearly: Save 2 months
Free
¥0/month
- AI 要約
Basic
¥780/month
- AI 要約
- 履歴
Most popular Pro
¥1,480/month
- AI 要約
- 履歴
- クロスランゲージ
- 動画 Q&A
- Notion エクスポート
Studio
For creators
¥2,980/month
Everything in Pro + X(Twitter) thread generator
- AI 要約
- 履歴
- クロスランゲージ
- 動画 Q&A
- Notion エクスポート
- X(Twitter) スレッド生成
Frequently asked questions
Does SumTube access my YouTube watch history?
No. SumTube touches only the URL and public caption track of the video you explicitly click the summarize button on. It never reads your watch history, subscriptions, or Google account.
Can SumTube summarize videos without captions?
Not today. Running our own audio ASR on videos with no captions would hurt Japanese quality and raise unit cost, so MVP supports videos with at least auto-generated captions.
How many videos can I summarize per day?
Free gives you 3/day, Basic (¥480/month) 30/day, and Pro (¥980/month) is effectively unlimited. Every new account gets Pro-equivalent access for the first 3 days as a reverse trial.
Can I get a Japanese summary from an English video?
Yes — cross-language summarization is a Pro feature. On MVP Basic and Free, summaries are produced in the transcript's own language.
How do I cancel?
Open Settings → Billing and follow the link to Stripe Customer Portal — one click cancels. Paid features remain active until the end of the current billing period.
Can I issue a qualified invoice (Japanese consumption tax)?
Yes. Invoices issued through Stripe Tax include our registered T-number and are eligible for Japanese consumption-tax deductions when used B2B.