TheBrain

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

TheBrain is ranked #1 of 32 in personal knowledge management software on Inferse. It runs on Android, API, iOS, Linux, macOS, Web, Windows. There is a free plan. Paid plans start at $15/mo.

Compared on personal knowledge management software

Free plan: Yesthebrain.com
Backlinks: Yesthebrain.com
Graph view: Yesthebrain.com
Organization model: graphthebrain.com
Offline access: Yesthebrain.com
Supported platforms: Windows, macOS, Linux, iOS, Android, webthebrain.com
Import and export: Yesthebrain.com

Facts

Purpose: TheBrain connects notes, files, links, projects, and AI in a visual knowledge network.thebrain.com · 30 Sept 2026
AI: Cerebro AI can create content, search and summarize a brain, suggest links, and converse using its knowledge.thebrain.com · 30 Sept 2026
Views: TheBrain 15 includes Card View, Mind Map, and Tree View.thebrain.com · 30 Sept 2026
API: TheBrain 15 provides a local API for scripts and external tools to create and link thoughts, run commands, and query brain data.thebrain.com · 30 Sept 2026
Platforms: TheBrain is available for Windows, Mac, Linux, iOS, Android, and through a browser client.thebrain.com · 30 Sept 2026
Local use: Brains are local by default, and Windows, Mac, and Linux users can keep data local without cloud sync.thebrain.com · 30 Sept 2026
Free limits: The free cloud allowance includes private sync for up to 1,000 thoughts, 100 MB synced attachment storage, and a daily AI allowance.thebrain.com · 30 Sept 2026
Attachments: External files and folders linked from a brain but stored elsewhere are not synchronized.thebrain.com · 30 Sept 2026
Plan lapse: After a paid plan lapses for six months or more, cloud data beyond free limits may eventually be removed to reclaim storage.thebrain.com · 30 Sept 2026
Privacy: TheBrain says it does not sell personal information or use private synced content for advertising; Cerebro inputs may be processed by contracted AI providers to provide the feature.thebrain.com · 30 Sept 2026
Security: The privacy policy describes administrative, technical, and physical safeguards, including encryption in transit and protections for data at rest.thebrain.com · 30 Sept 2026
Support: Pro Service includes one-on-one support, while TeamBrain and Max Service include priority support.thebrain.com · 30 Sept 2026
Company use: TheBrain says its software is designed to help people organize information and that more than half of Fortune 100 organizations use it.thebrain.com · 30 Sept 2026