One brain for your whole company
Your company's brain.
The one your AI reads.
One shared, living memory for everything your company knows: decisions, runbooks, customer truth, the conventions in someone's head. Claude and ChatGPT read it before they answer, so the whole company stops re-explaining itself.
Teams is $13 per seat per month. Bring your own Claude or ChatGPT.
The problem
Your company knows a lot. Your AI knows none of it.
The reason you picked Postgres. What Sarah said about pricing. The deploy runbook. The thing the founder always repeats. Right now that knowledge is scattered across Slack threads, a Notion page no one updated, a Google Doc, and three people's heads.
So every AI conversation starts cold. A new hire asks Claude how deploys work, and it doesn't know. A founder asks ChatGPT what you decided about pricing last quarter, and it doesn't know. Everyone re-explains the same context to their own AI, every week.
A company brain fixes the fragmentation at the source: write it down once, and every teammate's AI reads the same thing.
How it works
Write it once. Every AI reads it.
Plain Markdown notes in shared folders, read by whichever AI each teammate already uses.
One shared knowledge base
Decisions, runbooks, customer interviews, onboarding, and conventions live in shared folders your whole team can see. Personal notes stay personal.
Folders that carry rules
Each folder can have its own AI instructions: "search this folder first, quote the source, follow these steps." Your AI obeys them.
Read through MCP
The built-in MCP server lets Claude and ChatGPT search and read the brain before they answer. No copy-paste, no per-seat AI bill from us.
What lives in the brain
The context you keep re-explaining.
One folder per kind of knowledge. Each becomes something your AI can answer from.
Decisions
Why you picked Postgres, why pricing went flat, what you tried and rejected. The institutional memory most companies lose when someone leaves.
Runbooks
Deploys, rollbacks, incident playbooks. A runbook your AI can read is a first responder at 3am, not a doc nobody opens.
Customer interviews
Calls, themes, and verbatim quotes. Ask what your last ten customers said about onboarding and get a real answer.
Onboarding
The unwritten context a new hire normally extracts from senior people one interruption at a time. Their AI reads it on day one.
Conventions
How you name things, how you write, the standards everyone is supposed to know. Now the AI knows them too.
Strategy
Positioning, ICP, board prep, investor questions. So ChatGPT drafts from your company's reality, not generic advice.
Why AI-native matters
A wiki is a brain no one reads.
The work of writing things down is the same. What changes is who, and what, does the reading.
Notion / Confluence wiki
Written for humans, read slowly when someone remembers it exists. No MCP, so Claude and ChatGPT never read it. Compare Hjarni vs Notion.
ChatGPT memory / Claude Projects
Locked to one product and, usually, one person. The company can't share it, and your other AI can't read it. Compare Hjarni vs ChatGPT Memory.
Hjarni company brain
Plain Markdown you own, shared across the team, and read by every connected AI through the built-in MCP server. One source of truth, many readers.
I wanted a cloud knowledge base I could use as memory for my AI, in plain Markdown, with read and write access. Nothing else fit. Hjarni did. What sold me was how light and well defined the MCP is. My AI used to choke when I pasted Markdown and config files into a chat. It reads them perfectly from Hjarni. The folder-level AI instructions and the knowledge graph are the parts I did not know I needed.
Common questions
Common questions
What is a company brain?
One shared, living knowledge base of everything your company knows: decisions, runbooks, customer truth, conventions, and onboarding. The difference with Hjarni is that it is AI-native, so Claude and ChatGPT read from it before they answer instead of you re-explaining the same context to each one.
How is this different from a wiki or Notion?
A wiki or Notion page is written for humans to read, slowly, when they remember it exists. A company brain in Hjarni is written once and read by every connected AI, instantly, through the built-in MCP server. The work of writing things down is the same. What changes is that your AI is now one of the readers.
How is a company brain different from Hjarni for Teams?
Same product, two framings. Hjarni for Teams describes the plan and the day-to-day workflows. The company brain is the idea behind it: a single source of truth for your company that every teammate's AI reads. If you are comparing plans, start with the teams page.
Do all teammates need their own AI subscription?
Yes. Hjarni gives your company's knowledge a memory; the AI itself is whichever client each person already uses, such as ChatGPT, Claude, Cursor, or Copilot. There is no bundled AI and no per-message cost from Hjarni.
Who owns the data in the company brain?
You do. Every note is plain Markdown you can export at any time. Nothing is locked into a proprietary format, and the knowledge does not leave with the person who happened to write it down.
How do we keep the company brain accurate as it grows?
Each folder can carry its own AI instructions, so you can tell Claude and ChatGPT to update the relevant note when a decision changes. The brain is maintained the same way it is read, through the AI your team already uses every day.
Give your company one memory.
Start writing down what your company knows, and let every teammate's AI read the same thing.
Bring your own Claude or ChatGPT. No bundled AI, no per-message fees.