Save Hours and Days with Instant Research, Planning, and Execution
Second Brain lets you chat with anything—books, PDFs, videos, websites, code, and more—saving you hours by turning complex research into immediate, actionable steps.
Get complete insights and build effective plans from a single, focused AI assistant designed for all your needs.
Document-Focused Insights
Multi-Language & Source Compatibility
From Research to Actionable Plans
Multiple Sources.
One Powerful Answer.
Chat with Anything, in Any Language
Chat with your content in real-time—summarize documents, search details, and get instant answers. From notes to PDFs, videos, and articles, AI delivers clear, conversational responses.
Language doesn't matter, you can e.g. chat in English with a video in Spanish.
And with one click, save AI chat responses into Pages—feature-rich, shareable documents—so you can AI chat with your knowledge base anytime.
Your AI-Powered Virtual Memory
Capture and organize knowledge seamlessly in feature-rich shareable documents (Pages), Projects, and Smart Tags.
You can then AI chat with your knowledge base, asking questions and getting insights directly from the information you've saved.
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The smartest AI models on the planet
DeepSeek R1, GPT-4.5, Claude 3.7 Sonnet, GPT-4o—you name it.
With only 1 Second Brain subscription, you have access to the world's top AI models—and the list constantly gets updated.
Save, Edit, and Share ChatGPT Responses
Capture and organize ChatGPT history with ease.
- Save ChatGPT Responses: Preserve valuable AI insights instantly.
- Edit and Customize: Enhance saved content with notes, links, checklists, and multimedia.
- Seamless Sharing: Collaborate with teammates or clients effortlessly.
Turn AI conversations into actionable knowledge in a searchable, auto-organized system that grows with you.
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AI Copywriter Which Sounds Like You
Say goodbye to generic, robotic content.
Second Brain AI Copywriter understands your distinct style, crafting emails, blogs, and more that resonate with the human touch—exactly the way you would write.
Chrome Extension: Save Anything, Instantly Organized
Save text, images, entire webpages, or screenshots with a single click. The Chrome Extension adds content directly to your Pages, where it’s auto-organized and easy to find with powerful search.
From browsing to saving, seamlessly capture everything you need and keep your Second Brain updated, searchable, and always accessible.
Why Second Brain?
With AI Chat across multiple sources, Second Brain saves you days of work by transforming research, planning, and execution into actionable steps in minutes.
Effortlessly save, edit, organize, and structure all that knowledge in your AI-powered virtual memory—then dive deeper by chatting with your knowledge base to extract insights and make smarter decisions faster.
Without Second Brain
9 hours
With Second Brain
5 mins
Turn scattered knowledge into an organized, searchable system:
- Save AI Chat Responses: Capture key insights instead of losing them.
- Flexible Organization: Store everything within Pages, Projects, and Smart Tags for easy access.
- AI Chat With Your Knowledge Base: Unlock powerful insights and get instant answers from your stored knowledge.
Think, Plan, and Execute with Lightning Speed—Powered by the Second Brain App
Start building your Second Brain today!
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