Kortex (note-taking): The AI-powered second brain for capturing, organizing, and creating ideas. Kortex is an AI-powered second brain designed to help users capture, organize, and create content more efficiently. It combines features found in tools like Google Docs, Notion, and Obsidian into a single platform, aiming to eliminate writer's block and streamline the creative process. Key capabilities: AI-powered chat (kAI) for summaries, advice, and research, 25+ prebuilt AI workflows for content creation, marketing, learning, and planning, Interconnected writing environment with pane navigation and focus mode, Advanced search by tags, keywords, document contents, captures, elements, and highlights, Highlight management from PDFs, books, tweets, and articles with Readwise integration. Kortex ships a free plan plus paid tiers that unlock as usage grows. Buyers most often compare Kortex against Capacities, Reflect Notes, Logseq.
TL;DR - Kortex
AI-powered platform for capturing, organizing, and creating content.
Integrates AI for summaries, research, and writing assistance.
Designed for writers, creators, and note-takers to overcome writer's block.
Pricing: Free plan available
Best for: Growing teams
Pros & Cons
Pros
Consolidates multiple tools (docs, notes, AI) into one platform
AI assistance helps overcome writer's block and synthesize ideas
Comprehensive search ensures ideas are easily retrievable
Supports various content types and sources for highlights
Data exportability provides ownership and flexibility
Cons
Currently transitioning to a new product (Eden), which might cause disruption
Limited AI requests and storage on the free plan
Some advanced features like offline mode and file transcription are 'coming soon'
Key Features
AI-powered chat (kAI) for summaries, advice, and research25+ prebuilt AI workflows for content creation, marketing, learning, and planningInterconnected writing environment with pane navigation and focus modeAdvanced search by tags, keywords, document contents, captures, elements, and highlightsHighlight management from PDFs, books, tweets, and articles with Readwise integrationMarkdown export for documents and workspacesDocument and template sharing with collaboration featuresCustomizable templates, outlines, and Kortex Elements for guiding writing
Pricing Plans
Free
Free For Life
Unlimited documents, captures, and sources
15 Kortex AI requests per month (Base models only)
5mb file upload, 5gb storage
20 custom elements
Document sharing
5 voice transcriptions per month
1 member
1 workspace
Readwise import
Kore
$10/seat / month billed annually
Everything in Free plus:
Unlimited Kortex AI (Base models)
Unlimited Gemini 2.0/2.5 Flash and Llama 4 Scout requests
50mb upload, 15gb storage
50 custom elements
250 voice transcriptions per month
3 members (coming soon)
3 workspaces (coming soon)
Readwise auto sync
Premium
$17.50/seat / month billed annually
Everything in Kore plus:
Kortex AI, all Premium models
Unlimited Base model requests, 500 Premium model requests per month
Kortex is an AI-powered second brain designed to help users capture, organize, and create content more efficiently. It combines features found in tools like Google Docs, Notion, and Obsidian into a single platform, aiming to eliminate writer's block and streamline the creative process. The platform integrates various AI models to offer prebuilt workflows for content creation, marketing, learning, and planning, allowing users to chat with their 'second brain' for summaries, advice, and research based on their stored content.
Kortex is built for minimalist writers, creators, and note-takers who want a simple yet powerful workflow. It enables users to synthesize ideas quickly using AI, write in a distraction-free environment while referencing all their materials, and never lose an idea again with its advanced search capabilities. The tool also supports sharing notes and writing, consolidating highlights from various sources, and exporting data in markdown format, ensuring users maintain ownership of their knowledge. Kortex is currently transitioning to a new venture called Eden, which promises enhanced features like auto-tagging files, video frame search, and spatial AI.
Kortex is an AI-powered second brain designed to help users capture, organize, and create content. It integrates AI models for tasks like summarizing, generating ideas, and assisting with writing, combining features of note-taking, document creation, and knowledge management tools.
How much does Kortex cost?
Kortex offers a freemium model. The Free plan includes unlimited documents, 15 AI requests/month, 5MB file upload, 5GB storage, and 5 voice transcriptions/month. The Kore plan costs $10/seat/month (billed annually) and offers unlimited AI (base models), 50MB upload, 15GB storage, and 250 voice transcriptions/month. The Premium plan costs $17.50/seat/month (billed annually) and includes premium AI models, 1GB upload, 25GB storage, and unlimited voice transcriptions.
Is Kortex free?
Yes, Kortex offers a free-for-life plan that includes unlimited documents, captures, and sources, 15 Kortex AI requests per month (base models), 5MB file upload, 5GB storage, 20 custom elements, document sharing, and 5 voice transcriptions per month.
Who is Kortex for?
Kortex is designed for minimalist writers, creators, note-takers, marketers, students, and teams who want to organize their ideas, overcome writer's block, and create content more efficiently using AI. It's suitable for anyone looking to build a 'second brain' for their knowledge and creative work.