Second Brain

Second Brain allows you to AI chat with anything on a Visual Board — you can drop as much context and chat nodes as you want. Over time, you build a knowledge base — everything is interconnected, and you can AI chat with anything inside.

Second Brain is an AI-powered visual board and knowledge base that transforms how you interact with information. It lets you chat with a variety of content—documents, videos, PDFs, websites, and more—summarizing, searching, and extracting insights in real time. The platform integrates advanced AI models like GPT-4.5 and Claude 4, ensuring high-quality responses. Unlike linear note-taking tools, Second Brain organizes knowledge visually, linking all your saved content for easy retrieval. Its Chrome extension captures web content instantly, while the 'Memory' feature stores and organizes notes, AI chat responses, and multimedia in shareable documents. Language barriers are minimized, as you can chat with content in any language. Designed for researchers, marketers, and content creators, Second Brain streamlines workflows by turning scattered data into structured, searchable knowledge—saving time and enhancing productivity. Privacy is prioritized, with data never used for AI training or sold. Flexible pricing caters to casual users and power users alike.