# Second Brain

> Second Brain is an AI-powered knowledge management platform that reads TikToks, YouTube videos, Instagram Reels, PDFs, podcasts, and more — auto-organizing everything into a searchable, AI-chattable knowledge base. Features Visual Boards: a multi-node AI canvas where you work with multiple chat nodes, sources, and Notion-like pages all visible on one infinite workspace.

## About

- [Homepage](https://www.thesecondbrain.io): Second Brain — the AI knowledge base that actually works. Drop any content, get it auto-organized, and chat with your entire knowledge base using top AI models (GPT 5.4, Opus 4.6, Grok 4.1, Gemini 3.1 Pro).
- [Features](https://www.thesecondbrain.io/company/features): Full feature overview including AI chat, auto-organization, visual boards, semantic search, Chrome extension, and multi-model support.
- [Pricing](https://www.thesecondbrain.io/pricing): Plans starting from $6/month with access to all top AI models. No hidden fees, cancel anytime.

## Use Cases

- [Second Brain for Content Creators](https://www.thesecondbrain.io/creators): Save viral TikToks, YouTube videos, and Reels. Extract ideas, remix content, and build a searchable library of inspiration.
- [AI Carousel Generator](https://www.thesecondbrain.io/carousels): Generate ready-to-post Instagram, TikTok, and LinkedIn carousels from a single prompt in 90 seconds. Bespoke design for every slide — not templates. AI searches the web for fresh research before designing. Used by 1M-follower creators to publish without editing.
- [Second Brain for Marketers](https://www.thesecondbrain.io/marketers): Organize campaigns, analyze competitor content, and generate marketing copy from your research library.
- [Second Brain for Developers](https://www.thesecondbrain.io/developers): Chat with documentation, GitHub repos, and codebases. Auto-organized technical knowledge base.
- [Second Brain for Copywriters](https://www.thesecondbrain.io/copywriters): Build a swipe file of proven copy, analyze what works, and generate drafts from your reference library.
- [Second Brain for Solopreneurs](https://www.thesecondbrain.io/solopreneurs): One tool for all your research, planning, and content. Replace your stack of productivity apps.
- [Second Brain for Productivity Enthusiasts](https://www.thesecondbrain.io/productivity-enthusiasts): Build a personal knowledge management system that actually works — no manual tagging required.

## Comparisons

- [Second Brain vs Notion](https://www.thesecondbrain.io/compare/notion): Why Second Brain's AI-native approach beats Notion for knowledge management.
- [Second Brain vs NotebookLM](https://www.thesecondbrain.io/compare/notebooklm): How Second Brain handles more content types and offers visual boards NotebookLM lacks.
- [Second Brain vs Obsidian](https://www.thesecondbrain.io/compare/obsidian): Auto-organization and AI chat vs manual linking and plugins.
- [Second Brain vs Evernote](https://www.thesecondbrain.io/compare/evernote): Modern AI knowledge base vs classic note-taking app.
- [Second Brain vs Mem](https://www.thesecondbrain.io/compare/mem): Both AI-powered, but Second Brain handles far more content types including video and social.
- [Second Brain vs Logseq](https://www.thesecondbrain.io/compare/logseq): AI auto-organization vs open-source outliner with knowledge graph.
- [Second Brain vs Tana](https://www.thesecondbrain.io/compare/tana): Multimedia knowledge base vs structured knowledge graph with supertags.
- [Second Brain vs Wisebase](https://www.thesecondbrain.io/compare/wisebase): Multimedia auto-organization vs academic deep research tool by Sider.

## Blog

- [Blog](https://www.thesecondbrain.io/blog): Expert insights on AI-powered knowledge management, productivity strategies, and second brain methods.

## Key Facts

- Reads content types other tools cannot: TikToks, Instagram Reels, YouTube Shorts, LinkedIn carousels, podcasts
- One subscription includes all top AI models: GPT 5.4, Opus 4.6, Grok 4.1, Gemini 3.1 Pro
- Auto-organizes content with AI — no manual tagging required
- Visual Boards: multi-node AI canvas with multiple chat nodes, sources, and Notion-like pages — all visible on one infinite workspace for spatial, multi-threaded thinking
- Semantic search finds content by meaning, not just keywords
- Chrome Extension for one-click capture from any webpage
- Privacy-first: data never used for AI training, never sold

## Contact

- [Contact Us](https://www.thesecondbrain.io/contact-us): Reach the Second Brain team for support, partnerships, or press inquiries.