You save videos to Watch Later. They pile up. You never go back. CleoSum tells you what's worth your time before you click play.
Browse YouTube like you always do. Hover over any video and the CleoSum overlay appears instantly.
Usefulness score, water content percentage, key topics, and a tight summary. All in under two seconds.
High score? Watch it. High water? Read the summary. Low value? Skip and move on. You decide in seconds.
Every video gets a 1-10 score based on information density, actionable takeaways, and practical value. Set your threshold. Never waste 30 minutes on a 3/10 video again.
Intros, recaps, sponsor segments, tangents, and padding. We measure it all and show you the percentage. A 30-minute video might have 8 minutes of substance. Now you know.
Is the creator genuinely teaching or just selling you something? Our sentiment engine detects hype, frustration, shilling, and genuine helpfulness so you know what you're getting into.
Trending content and high-traffic videos are pre-analyzed. Results load before you even finish reading the title. Over 50,000 videos cached and growing.
English, Spanish, Japanese, German, Korean, French, and more. If the video has a transcript, CleoSum can analyze it. No language barriers.
We calculate information density vs. time investment. If a 25-minute video has 3 minutes of original insight, you'll know. Read the summary and move on.
We process the video transcript using purpose-built language models. Popular videos are pre-cached, so results appear instantly. For new videos, analysis takes 1-2 seconds. No video downloading, no scraping, no waiting.
Any video with available captions or a transcript. That covers the vast majority of YouTube content. Videos without transcripts will display a notice.
You pick a plan. No charge during the trial. No sneaky auto-charges. You get a reminder email before the trial ends.
Pro — $4.99/mo or $2.99/mo annual. Quick AI analysis (Haiku 4.5). Unlimited videos.
Pro+ — $9.99/mo or $6.99/mo annual. Deep AI analysis (Sonnet 4.6). More critical, thorough insights. Unlimited videos.
No. The extension is lightweight and all analysis requests are async. Cached results load instantly. You won't notice a thing except the overlay when you hover.
One click. No hoops, no retention calls, no guilt screens. Cancel from your account page and you keep access until the end of your billing period.
Try CleoSum free for 7 days. No credit card required.