Source-backed analysis6
Review basis
Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.
6 reference sourcesInformation updated Nov 12, 2026
How we review
TK (by Medium) Review
Medium's writing notebook with an @TK AI assistant in the editor
By AppDuo Editorial Team · Fact-checked
- Web
On this page
Decide at a glance
Our verdict
TK suits people already on Medium who want a private place to draft, use AI for lookups and publish later. It opened to everyone on 9 November 2026, runs mainly on the web, has no end-to-end encryption and no public user ratings yet.
Best for: Medium writers who want to draft privately and publish later
Skip it if: Sensitive notes that need end-to-end encryption
Pros
- Free with a Medium account
- AI in a supporting role: fact lookups, headline and structure feedback, finding older notes
- Imports from Evernote and Bear; Markdown import and export
Cons
- No end-to-end encryption (per Borncity, TechCrunch)
- Web-only at launch; a desktop app is only on the roadmap (per TechCrunch)
All pros and cons · Who is it for?
More pros
- Lets you note how AI was used when publishing; connects to your own agent via an MCP server or Claude skill
More cons
- Requires a Medium account to sign in; no public ratings or standalone pricing page yet
Best for
- Small groups writing and commenting together in private libraries
Skip it if
- Anyone who needs a desktop app, offline use or a localized interface
Experience & key features
What TK is
TK is Medium's writing notebook, opened to all Medium accounts on 9 November 2026, per TechCrunch. The official site calls it an "agentic notebook" for the writing you do before you publish. You sign in with a Medium account, import notes from Evernote, Bear and other apps, and keep half-formed ideas there until they are ready. The name comes from the publishing placeholder "TK", meaning "to come".
The AI assistant
The AI assistant sits in the editor: type @TK with a request to check a fact, find something you wrote or add a hyperlink. TechCrunch says TK ships with skills for editorial feedback, headline feedback and matching a draft to the style guide of Medium publications. It can also connect to your own agent through an MCP server or Claude skill. The official site says TK will not write your essay for you.
Libraries and sharing
Per WeRSM and Borncity, notes are private by default. You can share them with specific people or put them in Libraries, private blogs where a group writes, comments and reacts with emoji. To go public, you send a piece straight to Medium. Borncity reports there is no end-to-end encryption and that TK relies on access controls; TechCrunch writes that content is not encrypted because the app is built for collaboration.
More analysis
Price and maturity
On price, TechCrunch says TK is free with a Medium account. At launch it runs mainly on the web, with a desktop app on the roadmap. Borncity also mentions Android and iOS versions, but no TK listing could be found on the App Store or Google Play to confirm that. Because the product is new, what is known comes mostly from the vendor and launch-day press, with no long-term independent reviews. If you need a mature notebook with apps on every platform, Notion, Evernote or Obsidian remain safer choices.
Screenshots
Plans & pricing
Prices last verified Nov 12, 2026
Free
PersonalFree
Per TechCrunch, TK is free with a Medium account. There is no pricing page and no published AI usage limit.
- Free plan limits
- None of the pages reviewed list any limits.
- Free trial
- No free trial
Cancellation & refunds
Not applicable: there is no paid plan. Borncity reports Medium is weighing private or paid content as a future business model.
Privacy
The official page says your writing stays private until you share it and that no AI company trains on it or uses it without your permission. Borncity reports TK has no end-to-end encryption but offers granular access controls; TechCrunch writes that content in TK is not encrypted because the app is built for collaboration. Signing in means accepting Medium's general privacy policy (effective 24 March 2022), which covers cookies and third-party analytics.
TK (by Medium) alternatives
Controversies & incidents
Issues documented by the press, regulators, courts or the vendor itself. Every item is sourced; unproven claims are labelled as allegations. Last researched: Nov 12, 2026
No significant controversies or incidents found in the sources we checked.
Frequently asked questions
Is TK free?
According to TechCrunch, yes: TK is free with a Medium account. There is no official pricing page.
Does TK train AI on my writing?
The official page says no AI company trains on your writing or uses it without your permission. The full terms are in Medium's privacy policy.
Is content in TK end-to-end encrypted?
No. Borncity reports TK has no end-to-end encryption, and TechCrunch writes that content is not encrypted because the app is built for collaboration. Access controls are available instead.
Does TK have a desktop app?
Not yet. Per TechCrunch, TK launched on the web with a desktop app on the roadmap.
Review evidence & sources6
Scores
- Ease of use
- 7.0
- Features
- 6.5
- Value for money
- 7.5
- Performance
- 6.0
- Support
- 6.0
- Privacy & security
- 6.5
Why this score
Minimal editor, AI on call via @TK, imports from Evernote and Bear. English-only interface and no user ratings yet.
Why this score
Private libraries, comments, AI search and feedback, an MCP server. No desktop app yet, and it is too new to rank against established notebooks.
Why this score
Free with a Medium account per TechCrunch. But no AI limits are published and Borncity reports Medium is still weighing a paid model, so long-term cost is unclear.
Why this score
No independent data or reviews on speed, stability or offline use exist yet, so the score stays at an average level.
Why this score
The TK site links to Help and Status pages, but the sources reviewed show no TK-specific help docs or direct support channel.
Why this score
Notes are private by default with access controls, and the vendor says no AI company trains on them without permission. On the other hand there is no end-to-end encryption (Borncity; TechCrunch says the writing is not encrypted) and TK falls under Medium's general privacy policy, which includes cookies and third-party analytics.
Sources
- Vendor-providedTK official siteNov 12, 2026
- Vendor-providedTK sign-in page (Log in with Medium)Nov 12, 2026
- pressTechCrunch (2026-11-09)Nov 12, 2026
- pressWeRSM (2026-11-09)Nov 12, 2026
- pressBorncity (2026-11-09)Nov 12, 2026
- Vendor-providedMedium Privacy Policy (applies at TK sign-in)Nov 12, 2026
Specs & compatibility
- Developer
- Medium
- Headquarters
- United States
- Launched
- 2026
- Category
- Productivity
Capabilities
- AI features
- Real-time collaboration
- Integrations
Platforms
- Web
Interface languages
- English
Integrations
- Medium
- MCP server
- Claude skill
- Evernote (import)
- Bear (import)
Support
- Help center
Change history
- Launch.Medium opens TK to all Medium accounts; Borncity calls it the company's first major product launch since 2017.
- Feature.Per TechCrunch, TK launched with agent connections via an MCP server or Claude skill and an option to explain AI use when publishing.
- Launch.Per Borncity, TK opens to invited users.
About the author
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