NotebookLM is exceptional at one thing: synthesizing sources into grounded, citation-backed answers. Google built something genuinely different here. We're not going to pretend otherwise.
But NotebookLM was designed as a research assistant — not a knowledge operating system. The moment you need to do something with your research, the gaps become obvious.
| Feature | Default NotebookLM |
| AI answers from your sources | ✅ Excellent |
| Audio Overview (podcast) | ✅ Built-in |
| Source upload (PDF, doc, YouTube) | ✅ Works well |
| Export your sources | ❌ Not possible |
| Export chat history | ❌ Not possible |
| Notebook organization | ❌ Flat list only |
| Search across notebooks | ❌ Doesn't exist |
| Automation | ❌ Manual only |
Kortex doesn't replace NotebookLM — it installs as a browser extension and adds features directly inside the NotebookLM interface.
This is the #1 request from NotebookLM users. Kortex lets you export:
Sources — individual files or entire notebooks as PDF, Markdown, or ZIP
Chat conversations — full dialogue with citations
Artifacts — Briefing Docs, Study Guides, FAQs
With 20+ notebooks, default NotebookLM becomes unmanageable. Kortex adds:
Collections — group notebooks into folders
Color-coded tags — #research, #client, #urgent
Smart Search — real-time search across all notebook titles and tags
This is where Kortex separates itself. Instead of manual steps, you define rules:
When a new notebook is created → run Auto-Researcher to generate a Briefing Doc
When a notebook is tagged #podcast → add its Audio Overview to my RSS feed
When tag #urgent is added → also add #priority
Add Kortex if you:
Have more than 10 active notebooks
Need to export research for reports, teams, or other tools
Want to automate repetitive research workflows
Use Audio Overviews and want a personal podcast feed
Stick with default NotebookLM if you're an occasional user with a small number of notebooks and no need to move data out.
NotebookLM is the engine. Kortex is the cockpit. They're better together.
[Install Kortex free →](https://chromewebstore.google.com/detail/kortex-notebooklm/hdapplggdhndkblofffknpmnnnnbncbn)