Last updated: 2026-11-13
TK is a private notebook app for writing and thinking, launched by Medium on 9 November 2026. It holds ideas, notes, journals, research and drafts, imports your Medium writing and vaults from Bear and Obsidian, and has a mobile app. Its AI assistant lives inside the editor: type @TK mid-sentence to ask a question or pull in something you wrote earlier, without leaving the page.
Visit TK (from Medium) →TK ships AI skills for editorial and headline feedback and can check a draft against the style guides of Medium publications. It also has shared "libraries" for human feedback, can summarise any tag or search into a wiki-style page, and ships an MCP server and a Claude skill so your own agents can use what you have written.
Free for anyone with a Medium account.
It is a first version. Medium says no AI company trains on your writing in TK or uses it without your permission; read the privacy terms if you plan to store sensitive material.
This profile is based on the maker's own pages and public launch records as of 13 November 2026, not on hands-on testing; capabilities and prices change often, so confirm on the vendor's site. Sources: TK; Medium blog: "We are betting on human intelligence" (9 Nov 2026); The Medium Newsletter, 11 Nov 2026. AIHumanLove.com is independent: no ads, no affiliate links, no sponsored placements, and vendors cannot pay to change what we write. Compiled with AI assistance and reviewed before publication.