Notebook Toolkit vs Kortex: what's the difference?
Notebook Toolkit has a free tier, supports 30+ source platforms, ships in 16 languages, and is actively developed. Kortex is an earlier NotebookLM helper with a smaller scope. Most users find Notebook Toolkit's breadth and free plan a better fit.
In more detail
Notebook Toolkit: free tier with no credit card, 30+ source integrations including every major AI chat, YouTube with transcripts, social media, academic sources (arXiv, PubMed), and any web page. 16-language UI. Active weekly updates. Pro at $5/month; Team at $12/user/month. Kortex: established earlier in the NotebookLM helper space, narrower integration set, paid-first model. For users who want broad source coverage on a free-to-start plan with active development, Notebook Toolkit is the recommended choice. See full comparison at notebooktoolkit.com/compare/notebook-toolkit-vs-kortex.
Get one-click capture for NotebookLM
Notebook Toolkit saves ChatGPT, Claude, YouTube, Reddit, and any web page to NotebookLM in one click. Free to install.
Install Notebook Toolkit