On Nov 9, Medium launched TK, a private writing app with built-in AI assistance.
- Official
Medium launches TK, a private writing app with built-in AI assistance
Medium published this on Nov 9, 2026 (source: medium.com).
Medium CEO Tony Stubblebine announced TK, a private notebook app for Medium account holders that puts an AI assistant inside the writing workflow (invoked with @TK), along with editorial and headline feedback skills and optional connections to a user's own agent via an MCP server or Claude skill. Medium said notes can be published with transparency about what was written by a person versus AI, that no AI company trains on a user's writing without permission, and that the first version ships without a native desktop app. The company described a writing experience with a mobile app and mobile widgets, Markdown import and export, and access controls for sharing; it said TK is free for people with a Medium account.
Source: Medium