Stop watching. Start asking.
We’re building the reasoning layer for YouTube.
TubeCortex turns YouTube videos, channels, and saved libraries into searchable knowledge. It began as a YouTube summarizer — but the larger mission is to make video content readable, queryable, and useful long after the watch session ends. Stop watching passively. Start asking better questions.
A personal knowledge system for YouTube.
YouTube holds the world’s largest library of lectures, product reviews, market commentary, tutorials, interviews, and expert analysis. The problem isn’t access — it’s time. People save videos they never watch, forget what creators said, and repeat the same research every time a decision comes up.
TubeCortex turns that overload into an AI-powered reading and knowledge layer. A YouTube video becomes a structured, searchable summary. A saved library becomes something you can ask questions about. A channel becomes a Creator Brain you can chat with across its entire history.
It’s built for learners, researchers, and busy professionals who follow more on YouTube than they have hours to watch. If your “watch later” list is a graveyard of good intentions, this is for you.
More than a summary. A knowledge engine.
Creator Brain
Pull in a YouTube channel's entire history, then ask it questions like you'd ask someone who's watched everything — not just the one video in front of you.
Library-wide chat
Ask one question across every video you've saved. Compare creators, retrieve recommendations, and reason across hundreds of transcripts at once.
Channel subscriptions & import
Subscribe to channels or import your existing YouTube subscriptions. Every new upload is automatically processed, summarized, and added to your library.
Automated pipeline
You don't have to check for new uploads yourself — TubeCortex watches every channel you follow in the background and picks up new videos automatically. Each one gets summarized, indexed, and can land straight in your Telegram inbox.
Bring your own keys (BYOK)
Connect your own API keys via OpenRouter and run unlimited summaries on your own credits — full model flexibility, no platform markup.
Structured outputs
Topic Index, Key Points with verdicts, Detailed Breakdown, or a custom format you define. Choose Claude, ChatGPT, Gemini, or Grok per summary.
From video feed to queryable knowledge.
- 01
Paste a link or sync your subscriptions
Drop in any YouTube URL for an instant summary, or import your channel subscriptions and let TubeCortex process every new upload automatically.
- 02
Structure the transcript
TubeCortex pulls the video's transcript and turns it into a structured summary — organized by topic and timestamp — instead of a raw wall of text.
- 03
Choose your model and format
Pick Claude, ChatGPT, Gemini, or Grok, and a format that fits — Topic Index, Key Points, Detailed Breakdown, or a custom mode you define.
- 04
Read, search, and ask across your library
Every summary is indexed and searchable. Ask follow-up questions on a video, query a creator's full history, or reason across your entire saved library.
The AI models behind it.
TubeCortex is model-flexible. Youchoose which model generates each summary — for on-demand videos and for automated channel summaries alike. Switch freely between providers, or connect your own keys and use any model available through OpenRouter.
Your library is yours.
Your library and your summaries are private to your account by default. The videos you save, the questions you ask, the custom formats you build, and the channels you follow are not published or shared unless you explicitly choose to share them.
Frequently asked questions
- What is TubeCortex?
- An AI-powered knowledge layer for YouTube. It summarizes any video, auto-processes your channel subscriptions, and lets you query your saved library through conversation — turning your feed into a searchable knowledge base.
- How is it different from a YouTube video summarizer?
- A summarizer handles one link at a time. TubeCortex bulk-indexes channels into a Creator Brain, lets you ask questions across your whole library, and auto-summarizes new uploads. The summary is the entry point, not the product.
- How do I summarize a YouTube video?
- Paste any YouTube URL, choose your model and format, and get a structured summary organized by topic and timestamp. New accounts start with 500 free credits — no credit card required.
- Can I auto-summarize a YouTube channel?
- Yes. Subscribe inside TubeCortex or import your YouTube subscriptions. Via WebSub push, new uploads are summarized in your chosen model and format, indexed, and can be delivered to your Telegram inbox.
- Can I chat with a video or a whole channel?
- Yes. Ask follow-ups on any video (answered from its transcript). Creator Brain lets you chat with a channel's entire history, and Library-wide chat reasons across every video you've saved.
- Which AI models can I use?
- You choose: Claude, ChatGPT/GPT, Gemini, or Grok — per video or as a default for channel summaries. Power users can connect their own keys via OpenRouter.
- How does Bring Your Own Keys work?
- Connect your own API keys through OpenRouter. TubeCortex uses your keys, so you pay your provider directly at cost and run unlimited summaries without using platform credits.
- Is there a free tier?
- Yes — every new account gets 500 free credits, no credit card required. Optional paid credits are available if you need more.
- What output formats are available?
- A timestamped Topic Index, Key Points with verdicts and action items, a Detailed Breakdown, or a custom format you define — not generic AI prose.
- Are my summaries private?
- Yes. Your library, summaries, custom modes, subscriptions, and chats are private to your account by default. Nothing is shared unless you choose to share it.
Need help with your account, billing, or a problem? Visit Support →
Our mission
Stop watching. Start asking. We want to give you back your time and attention — so you can learn more from YouTube without watching more of it.