Medium Launches TK, an AI-Powered Note-Taking and Writing App
Medium has unveiled TK, a note-taking and writing app with a built-in AI assistant and private sharing, which it calls its first major product launch since 2017.
SUMO· the number puzzle
Dialo· learn languages by speaking
ediviewer· read EDI files like documents
giftdetect· the right gift in minutesMedium has launched TK, a new app that combines note-taking, writing and sharing with AI tools built into the editor. The company describes it as its first major product launch since 2017. TK is available on the web, iOS and Android.
The AI assistant lives directly in the text editor. While writing, users type "@TK" to ask questions, pull relevant passages from notes they saved earlier, or get feedback on their text. The app also offers editorial review, headline suggestions and a way to compare drafts against the style guides of Medium publications. Users can edit and archive their writing and receive suggestions for new story ideas.
Feedback from people, too
TK treats human feedback as part of the writing process. Drafts can be shared by link or email, and recipients can leave comments and reactions. Private spaces called "Libraries" let small or large groups gather around a topic and share their work. Medium CEO Tony Stubblebine describes the approach as private blogging, and communities can form around recipes, poems or book projects.
Openness and limits
TK includes an MCP server and a Claude skill, so external AI agents can access a user's notes. Writers can publish transparency notes explaining how AI contributed to a text. The app supports Markdown import and export, and users set sharing permissions themselves. Writing in TK is not encrypted, however.
TK is free for anyone with a Medium account. Medium says it is considering revenue from private content or access to selected collections in the future. A desktop app is on the roadmap.
For writers, the launch shows Medium moving beyond public publishing toward a private workspace where drafting, feedback and AI assistance sit in one place.
Apps worth a look
SUMO: the number puzzleTap the right tiles, add them up, hit the target. Easy to learn, hard to master. Free, for all ages.
Dialo: learn languages by speakingTalk to an AI conversation partner; every sentence comes back corrected and explained in your language. 9 languages, A1 to C2.
ediviewer: read EDI files like documentsOpen EDIFACT and X12 messages, see every segment explained, convert to JSON/XML, export PDF and Excel. Runs locally, no upload.
giftdetect: the right gift in minutesPick who it is for, the occasion and their personality. The search engine reads product descriptions from local shops and ranks what fits. Free, no sign-up.
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