Best AI YouTube Video Summarizers (2026)
AI YouTube video summarizers turn eligible public lectures, podcasts, and talks with usable transcript context into a readable summary. Supported lengths, timestamps, chat context, and plan allowances vary by product and source, so test the videos you actually watch.
The shortlist
Summio
Web and iOS reading experience with chat grounded in the summary and available transcript context, plus timestamp anchors when available. Supports eligible public YouTube lectures, podcasts, talks, and playlists when usable transcript context is available.
YouTube Summary by Glasp
A provider in the YouTube-summary category; verify its current browser support, source limits, features, and plan terms on the provider site.
NoteGPT
A provider in the video-to-notes category; verify its current inputs, export options, platform support, and plan terms on the provider site.
Eightify
A provider in the YouTube-summary category; verify its current browser support, timestamps, source limits, and plan terms on the provider site.
Common questions
Which is the best free YouTube summarizer?
Free access and allowances change. Summio shows its current free-tier limits in the Web workspace and iOS app; verify extension terms on each provider site.
Can YouTube summarizers handle long videos?
Maximum length and processing depend on the provider, public video, available transcript, and current limits. Very long or unsupported videos may not be accepted.
Do they preserve timestamps?
Summio keeps timestamp anchors when they are available. Timestamp behavior varies elsewhere, so verify each provider with a representative video before choosing.
Start reading with Summio
Use Summio in your browser, or get the iOS app from the App Store.