Kortex
Kortex is an AI writing workspace and second brain for minimalist writers and note-takers — now rebranding to Eden.
Kortex is a strong fit for solo writers who want an AI second brain without feature bloat — the capture-and-create loop and Tab-to-synthesize workflow are fast, and markdown export means you're never locked in. Compared with Roam Research and Obsidian, Kortex leans much harder into the writing surface than the graph, and the highlight library plus Readwise sync is genuinely useful. But timing matters: the Eden rebrand is underway, and the best new features (auto-tagged files, canvas spatial AI, frame-level video search) live in Eden. The 15 monthly AI requests on Free run out quickly, so budget for Kore at $10/seat/mo annual.
Verified 23d ago · liveness 64/100 · cite: rightaichoice.com/tools/kortex
- Minimalist writers and bloggers who want a distraction-free writing space with AI drafting help
- Content creators turning saved ideas into newsletters, scripts, social posts, and articles
- Note-takers building a second brain with interconnected notes, captures, and highlights
- Students generating study plans from their notes and YouTube videos
- Heavy AI users — Free caps at 15 Kortex AI requests per month
- Teams needing mature collaboration — member and workspace limits are listed as coming soon on most tiers
- Anyone storing large media — uploads capped at 5MB on Free and 1GB on Premium
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Skip Kortex if you need mature team collaboration, large media storage, or a product with a stable name — member and workspace limits are still 'coming soon,' and the best new features are shipping under the Eden brand instead.
Premium model requests are capped at 500 per month on the Premium tier — heavy AI users will hit that ceiling fast and the vendor says limits will change when credit-based billing arrives.
Kortex is priced for solo creators and small teams. Free at $0 works for testing, Kore at $10/seat/mo annual is comparable to Notion Plus and cheaper than Obsidian Sync plus a separate AI subscription, and Premium at $17.50/seat/mo annual undercuts most AI writing tools bundling premium models. Teams past a handful of seats will find the collaborator limits and 'contact us' Custom tier awkward compared with Notion or Coda.
In short
Kortex — Kortex is an AI writing workspace and second brain for minimalist writers and note-takers — now rebranding to Eden. Best for Minimalist writers and bloggers who want a distraction-free writing space with AI drafting help, Content creators turning saved ideas into newsletters, scripts, social posts, and articles, Note-takers building a second brain with interconnected notes, captures, and highlights. Free to start; paid plans from $10/user/mo.
What's new in Kortex
Checked 9 days agoAcross the latest 2 updates: 1 feature update and 1 news mention.
Kortex To Eden: Everything You Need To Know
Kortex announces its rebrand to Eden, explains how the change affects existing users, and details how to transfer a Kortex workspace into Eden. New Eden features include file and link auto-tagging, frame-level video search, and canvas spatial AI.
Kortex AI V2
Kortex releases Kortex AI V2, described by the vendor as its most powerful release to date, expanding the kAI assistant across summaries, research, advice, and study plans drawn from notes, highlights, and YouTube videos.
What people actually say about Kortex — is it worth it?
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
41 mentions across 2 sources (Hacker News, App Store) · researched Jul 3, 2026.
Average across the 2 sources that answered — each source counts once, not each post.
- +AI assistant (kAI) can summarize, research, and create study plans from various sources.
- +Interconnected writing surfaces related ideas from notes and highlights in real time.
- +Kortex Elements offer templates and outlines to guide writing projects.
- +Advanced search by tags, related words, and contents across captures and highlights.
- +Markdown export and Readwise integration support data portability and external highlights.
- −Mobile app is buggy, crashes often, and lacks basic scrolling and navigation.
- −Does not save reading position when switching apps on mobile.
- −No chapter selection on mobile; must exit book fully or type page numbers.
- −Freezes every few minutes on MacBook Air requiring restart.
- −Customer support is slow and only via email.
- • No pricing details found; free plan likely lacks premium AI models and voice transcription as hinted by 'limited on free plan'.
Viability Score
How well maintained and how widely used is Kortex? Built from what the vendor actually publishes (docs, changelog, tutorials, integrations, pricing), whether the site is live, and how much real users discuss it. How we calculate this
Last calculated: October 2026
How we score →Key Features
- Kortex AI (kAI) assistant for summaries, advice, research, and study plans
- Tab-to-synthesize turns kAI chats into fleshed-out notes
- Use documents as context for AI chats and as creative prompts
- Pull AI answers from YouTube videos, highlights, and external sources
- 25+ prebuilt AI workflows for content creation, marketing, learning, and planning
- Multi-model support: Gemini 2.0/2.5 Flash and Llama 4 Scout, plus Premium models on Premium tier
- Interconnected writing surfaces show related documents, captures, elements, and highlights
- Pane navigation for side-by-side reference while drafting
- Focus mode for a distraction-free writing environment
- Advanced search by tags, related words, document contents, captures, elements, and highlights
- Searchable highlight library for PDFs, books, tweets, and articles
- Readwise integration for highlight import (Free) and auto sync (paid)
- Markdown export for individual files or full workspace
- Document and template sharing with duplication across workspaces
- Voice transcription with plan-based limits
About Kortex
Kortex is an AI-powered second brain and writing workspace for minimalist writers, note-takers, and content creators who want to capture ideas, connect them, and turn them into finished drafts in one place. The core workflow is deliberately narrow: capture an idea to a specific note, then toggle the kAI assistant with Tab to synthesize a chat into fleshed-out notes. You can reference documents, highlights, ideas, and captures side-by-side through a pane navigation system while you write, or drop into focus mode for a distraction-free environment. The knowledge layer is where Kortex earns its keep. It surfaces related documents, captures, elements, and highlights as you write, so relevant ideas appear when you need them. Search goes beyond keyword matching — you can query by tags, related words, document contents, captures, elements, and highlights. Highlights from PDFs, books, tweets, and articles live in one searchable library, with Readwise import on Free and auto sync on paid tiers. AI runs through the product: summaries, advice, research, and study plans pulled from your notes, highlights, and YouTube videos. Paid plans unlock 25+ prebuilt workflows for content creation, marketing, learning, and planning, plus multi-model support across Gemini 2.0/2.5 Flash and Llama 4 Scout, with Kortex AI V2 released in April 2025 and Premium models on the Premium tier. Everything runs on your own documents as chat context, and you can export files or the whole workspace as markdown at any time. The big caveat for buyers: Kortex is rebranding to Eden. Standout new capabilities — saving any file or link with auto-tagging, searching to an exact video frame, and canvas-based spatial AI — are landing in Eden. Current Kortex users can sign into Eden and transfer their workspace, but new buyers should decide whether they want to bet on the Kortex name or move straight to Eden.
Behind the Verdict
Kortex's core strength is restraint. Where most note apps pile on databases, graphs, and plugin ecosystems, Kortex ships one workflow — capture then create — and builds everything around it. The Tab-to-synthesize move is the standout: you chat with kAI, hit Tab, and your conversation becomes structured notes. Combined with pane navigation that keeps documents, captures, and highlights visible while you draft, this is a meaningfully faster loop for writers than hopping between apps. The knowledge layer is where it holds up best. Search covers tags, related words, document contents, captures, elements, and highlights, and the unified highlight library aggregates PDFs, books, tweets, and articles with Readwise import on Free and auto sync on paid tiers. Kortex Elements let you build reusable templates for social posts, video scripts, or outlines, and the 25+ prebuilt AI workflows on paid plans cover content creation, marketing, learning, and planning. Multi-model support covers Gemini 2.0/2.5 Flash and Llama 4 Scout on Kore, with Premium models on the Premium tier; Kortex AI V2 shipped in April 2025. Weaknesses are real. Free caps at 15 Kortex AI requests per month with base models only, 5MB uploads, 5GB storage, and 5 voice transcriptions. Kore raises uploads to 50MB and storage to 15GB. Premium is the only tier with Premium models and unlimited voice transcription. Teams are constrained — member and workspace limits are listed as coming soon on most tiers, so this is not a collaboration-first tool. Offline mode and file transcription are still 'coming soon.' And the biggest issue is strategic: Kortex is becoming Eden, and new features like auto-tagged file saving, frame-level video search, and a spatial AI canvas are shipping there. Existing users can sign into Eden and transfer workspaces, but new buyers face a genuine choice about which product to commit to. If you want a distraction-free AI writing surface and don't need heavy team features, Kortex (or Eden) is worth a look. If you need a full document editor like Google Docs, or a dense graph-based PKM like Roam or Obsidian, look elsewhere.
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Real-world workflow fit
Concrete scenarios for the personas Kortex actually fits — and what changes day-one when you adopt it.
Capture article ideas as individual notes throughout the week, then on drafting day open a document, reference relevant captures and highlights in the pane view, chat with kAI via Tab-to-synthesize, and pull a full draft out of the conversation.
Outcome: Draft produced in one sitting instead of staring at a blank screen, with source highlights visible for citation.
Import book and PDF highlights via Readwise auto sync on Kore, paste a YouTube lecture link into kAI for a summary, and ask for a study plan drawn from notes and highlights.
Outcome: Consolidated study material and a plan generated from the student's own notes rather than starting from scratch.
Build reusable Kortex Elements templates for Instagram carousels and video scripts, then batch-fill them by referencing past high-performing posts and captures in the pane view.
Outcome: Faster batch production with consistent formatting and less time re-deriving structure for each post.
Use Cases
- Capture fleeting ideas as standalone notes and later synthesize them into full articles using kAI.
- Import highlights from Readwise and search across all your knowledge in one place.
- Use Kortex Elements to create templates for consistent social media posts or video scripts.
- Chat with kAI to get study plans or summaries from YouTube videos and notes.
- Export your entire workspace as markdown to migrate to another tool at any time.
- Reference course material, take notes, and draft papers as a student.
- Outline and draft emails, landing pages, and copywriting as a marketer.
Models Under the Hood
as of 2026-09-30
Limitations
- Free is tight: 15 Kortex AI requests per month with base models only, 5MB file uploads, 5GB storage, 5 voice transcriptions per month, 1 member, and 1 workspace.
- Kore ($10/seat/mo annual, $14 monthly) unlocks unlimited base-model AI plus unlimited Gemini 2.0/2.5 Flash and Llama 4 Scout requests, raising uploads to 50MB and storage to 15GB, with 50 custom elements and 250 voice transcriptions per month.
- Offline mode, file transcription, and expanded member/workspace capacities are listed as coming soon rather than shipped.
- Most significantly, Kortex is rebranding to Eden, where new features like auto-tagged file/link saving, frame-level video search, and canvas spatial AI are landing — this may affect long-term support for the Kortex name.
as of 2026-09-15
Verification history
We have re-verified Kortex 8 times since . Each pass re-reads the vendor's own pages and re-checks every listed field against that evidence; passes where nothing had changed are marked as such.
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
- — re-verified summary, description, our verdict, our analysis, pricing model, pricing tiers, features, integrations, who it suits, who should skip it
Showing the 6 most recent of 8 verification passes.
Free to cite with attribution — this page re-verifies continuously.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Kortex tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free
$0
Ideal for
Solo note-taker or writer testing Kortex before committing, who can live with 15 AI requests per month.
What this tier adds
Free entry point: unlimited documents/captures/sources, 15 AI requests per month on base models, 5MB uploads, 5GB storage, Readwise import.
Kore
$10/seat/mo billed annually; $14/seat/mo monthly
Ideal for
Individual writer or creator who relies on kAI daily and needs more storage for source material.
What this tier adds
Adds unlimited base-model AI, unlimited Gemini 2.0/2.5 Flash and Llama 4 Scout requests, 50MB uploads, 15GB storage, 250 voice transcriptions, 3 members and 3 workspaces, Readwise auto sync.
Premium
$17.50/seat/mo billed annually; $21/seat/mo monthly
Ideal for
Power user running Kortex as a full AI second brain and needing Premium models, unlimited voice transcription, and larger storage.
What this tier adds
Adds Premium models with 500 Premium model requests per month, 1GB uploads, 25GB storage, unlimited voice transcriptions, first access to new features, private community and course, and higher member/workspace limits.
Custom
Contact Us
Ideal for
Large teams with specific requirements that the published tiers don't cover.
What this tier adds
Contact sales for custom pricing tailored to large-team needs, beyond what Premium's published member and workspace limits cover.
Where the pricing makes sense
The company stage and team size where Kortex's pricing actually pencils out — and where peers do it cheaper.
Kortex is priced for solo creators and small teams. Free at $0 works for testing, Kore at $10/seat/mo annual is comparable to Notion Plus and cheaper than Obsidian Sync plus a separate AI subscription, and Premium at $17.50/seat/mo annual undercuts most AI writing tools bundling premium models. Teams past a handful of seats will find the collaborator limits and 'contact us' Custom tier awkward compared with Notion or Coda.
Setup time & first value
How long it actually takes to get something useful out of Kortex — broken out by persona, not the marketing-page minute.
Individual writers can sign up free and produce a first synthesized note in under 15 minutes — sign-up, capture a note, hit Tab to bring up kAI. Getting the full second-brain loop running (Readwise auto sync, Elements templates, pane three-column layout) takes most users an afternoon. Teams should budget longer because member and workspace limits are listed as coming soon and the Custom tier
Switching to or from Kortex
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
- →From Notion: export pages as markdown, then import into Kortex and re-link captures and highlights as elements.
- →From Roam Research: export your graph as markdown and bring daily notes across as individual Kortex documents.
- →From Obsidian: point Kortex at your markdown vault exports and rebuild links through captures and documents.
- →From Readwise: connect the Readwise integration to pull your highlight library in on any tier, with auto sync on paid plans.
- →From Google Docs: copy drafts across and use kAI to convert them into Kortex's capture-and-synthesize structure.
- ↗To Obsidian: export individual files or the full workspace as markdown and open the vault in Obsidian directly.
- ↗To Roam Research: export as markdown and rebuild the graph in Roam's block-based structure.
- ↗To Notion: export as markdown and import pages into a Notion database, then re-create elements as templates.
- ↗To Eden: current Kortex users can sign into Eden and transfer their workspace as part of the rebrand.
- ↗To a plain markdown stack: export the whole workspace and drop the files into any folder-based editor.
Integrations
Resources & Guides
Tutorials & Learning
YouTube returned 6 videos for “Kortex”, and we withheld 6: 6 could not be judged, because “Kortex” is a single word that other videos use for other things. We are showing none, because we could not prove any of them are about Kortex.
Official links
Tools that pair well with Kortex
Common stack mates teams adopt alongside Kortex, with the specific reason each pairing earns its keep.
Reflect AI
Open-source, markdown-first note-taking with backlinks, end-to-end encryption, and built-in AI
Notability
Notability turns handwriting, audio, and PDFs into searchable notes, AI summaries, and study materials across Apple, Android, and web.
Goodnotes
Tablet-first handwriting and PDF annotation app with AI search, mind maps, and meeting notes for teams that work with a stylus.
Featured Head-to-Head Comparisons
Kortex vs Letterhead
Choose Kortex if you're a solo creator who wants an AI-powered second brain for writing and knowledge management. Choose Letterhead if you're a team scaling multi-newsletter operations with advanced automation and analytics. They serve fundamentally different needs, so pick based on your primary workflow.
Kortex vs Gem
Gem and Kortex serve fundamentally different needs: Gem is a B2B recruiting platform for talent teams to source, screen, and hire efficiently with AI agents, while Kortex is a personal productivity tool for writers and creators to capture ideas and generate content. Buyers should choose based on their primary workflow—recruiting vs. personal knowledge management. Gem's recent GeMCP preview and AI fraud detection show heavy investment in recruitment-specific AI; Kortex's transition to Eden and price increase signal a pivot, making it less stable for long-term use.
Kortex vs Poke Interaction Co
Kortex is for deep writing and knowledge management, while Poke is for automating life via messaging. Choose Kortex if you need a distraction-free workspace to turn highlights into content. Choose Poke if you want an AI that manages your email, calendar, and health data from your chat app.
Alternatives to Kortex
View all
Reflect AI
Open-source, markdown-first note-taking with backlinks, end-to-end encryption, and built-in AI
Notability
Notability turns handwriting, audio, and PDFs into searchable notes, AI summaries, and study materials across Apple, Android, and web.
Frequently Asked Questions
Best-of guides
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