Online publishing platform Medium has launched TK, a free writing application that integrates artificial intelligence directly into the editing process to help users develop ideas, organize notes, and improve drafts. Announced on November 9, 2026, the web-based tool allows writers to request assistance by typing “@TK” followed by a question or instruction.
According to Medium’s official announcement, the application is designed to support writers throughout the creative process, from collecting initial ideas to refining completed articles. TK combines AI assistance with personal note management and collaborative feedback tools.
TK Integrates AI Assistance Into the Writing Editor
TK allows writers to access AI assistance without leaving their documents or switching between applications. Users can ask questions, request editorial suggestions, retrieve previously saved notes, or seek help developing incomplete sections of their drafts.
The app takes its name from the publishing abbreviation “TK,” traditionally used to indicate information that will be added later. Medium has adapted the term to represent an AI assistant that helps writers complete unfinished ideas and address missing details.
TK includes specialized capabilities for editorial reviews, headline suggestions, and evaluating drafts against publication style guides. The company said these tools can help writers receive feedback while maintaining control over their work.
The platform can also suggest writing prompts and retrieve relevant information from previous notes. These features are intended to help users organize their ideas and maintain continuity across different writing projects.
Medium Introduces AI Transparency Features
Medium’s launch comes amid growing debate over the use of generative AI in journalism and creative writing. Publishers and literary organizations have faced questions about how to distinguish human-written material from content produced with AI assistance.
To address transparency concerns, TK allows writers to publish notes explaining how artificial intelligence contributed to their work. These disclosures can provide information about prompts, source materials, and the assistance used during the writing process.
Medium said the feature represents an initial effort to make the origins of published writing more transparent and verifiable. The company acknowledged concerns about low-quality AI-generated content while maintaining that AI tools can support human creativity.
TK Supports External AI Agents and Collaboration
The application can optionally connect with external AI agents through its Model Context Protocol (MCP) server or a Claude skill. These integrations allow users to incorporate project information, previously developed ideas, and other relevant context into their writing workflows.
TK also includes collaborative features that let writers share early drafts and receive feedback from other people. Users can control access permissions for their documents, although Medium confirmed that content stored in the application is not encrypted.
The platform supports importing and exporting Markdown files, despite using its own editing interface. TK is currently available through web browsers, with a desktop application planned for a future release.
Medium said TK will remain free for users with a Medium account. The company has not announced a specific launch date for the desktop version.
Featured image credits: Wikimedia Commons
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