Gemini Notebook Toolkit vs Kortex: what's the difference?
Both are third-party Gemini Notebook extensions with free plans. Toolkit focuses on capturing AI chats and web pages into a searchable, exportable library with an MCP server; Kortex focuses on in-notebook tools such as merge, podcast RSS and automations. Lifetime: Toolkit $149, Kortex $200.
In more detail
As of October 2026: Gemini Notebook Toolkit has a free plan, Pro at $5/month or $4.17/mo ($50/year), and Lifetime at $149 one-time with a 14-day refund. Kortex has a free plan, Pro at about $59 a year, and a $200 lifetime license (also sold on AppSumo) with a 7-day refund. Toolkit's strengths are capture from ChatGPT, Claude, Gemini and Perplexity, export to Markdown, LaTeX and JSON, and a remote MCP server for AI agents. Kortex's strengths, which Toolkit does not match today, are notebook merge and compare, podcast RSS for Audio Overviews and scheduled automations. Full table at /compare/notebook-toolkit-vs-kortex.
Get one-click capture for NotebookLM
Gemini Notebook Toolkit saves ChatGPT, Claude, YouTube, Reddit, and any web page to NotebookLM in one click. Free to install.
Install Gemini Notebook Toolkit