What is BaiShou

BaiShou is an open-source, local-first AI memory companion.

You write diaries and life fragments locally, and BaiShou summarizes them layer by layer into “memory rings” that AI companions can understand, search, and keep you company with over the long run. Your data doesn’t go into someone else’s cloud account — it stays on your own devices.

With a pure-white vow, we guard each other for a lifetime.

What it can do

CapabilityDescription
DiaryWrite in Markdown, with weather, mood, tags, location, and attachments
Memory ringsDiaries get summarized layer by layer into weekly journals, monthly reports, quarterly reports, and yearbooks
AI companionsMultiple companions, each with its own persona and model, able to call tools to read and write diaries and memories
RAG semantic memoryVector search plus full-text search, so companions can actually find the details you wrote down
WorkspacesMultiple workspaces with data isolated from each other
Sync & backupIncremental sync, full backup, LAN transfer; desktop also has Git version control

How is it different from Notion or Obsidian?

Note-taking tools solve “keep my material tidy.” BaiShou wants to solve “the AI actually remembers me.”

Note-taking toolsBaiShou
FocusOrganizing, backlinks, writingPersonal memory that AI understands and uses over the long term
AIUsually a plugin or a bolted-on chat boxCompanions, memory rings, and RAG are the skeleton of the product
DataOften tied to an official cloud or plugin ecosystemLocal by default, with optional sync to your own S3 / WebDAV

What we insist on

  1. Local-first: Core data lives on your device, and you can export it and walk away at any time.
  2. Core capabilities stay open: Diary, self-hosted sync, and custom model APIs have no paywall.
  3. Let the AI actually read your material: It can search, answer questions, and summarize — it isn’t just a cloud drive.
  4. Official services are only an option: Use them if you want convenience; everything still works fully without paying.