AIVM Brain vs Microsoft 365 Copilot
A productivity assistant inside Microsoft 365, vs a governance layer across all your tools.
Microsoft 365 Copilot is a productivity assistant built into Word, Excel, Teams and Outlook; it answers from whatever a user can already access, which is why oversharing is its most-cited risk. AIVM Brain is a governance layer that works across all your tools, hides the sensitive part of a document instead of blocking the whole file, and records every access with a tamper-evident, content-blind log. If your concern about Copilot is data leaking, Brain is built for exactly that.
At a glance
| AIVM Brain | Microsoft Copilot | |
|---|---|---|
| Scope | Any source: Slack, GitHub, Drive, Notion, Box, Confluence, Salesforce, Telegram and more | Microsoft 365 apps (SharePoint, OneDrive, Teams, Outlook) |
| Access model | Permission-aware, plus field-level redaction: hide one salary column instead of the whole file | Inherits each user's existing M365 permissions, including overshared and inherited access |
| Oversharing | Governed retrieval is the product, on by default | Requires a separate Microsoft Purview rollout (DLP, sensitivity labels) to mitigate |
| Audit and proof | Content-blind, tamper-evident log, plus an optional on-chain anchor of what the model answered over | Purview auditing, configured separately |
| Data and training | Bring your own model key; nothing you connect trains any model | Runs on Microsoft's Azure OpenAI under Microsoft's terms |
| Pricing | Free to start, transparent self-serve tiers | $30 per user / month add-on, on top of a Microsoft 365 license |
| Getting started | One command: npx @aivm/brain init | Microsoft 365 licensing plus an admin governance rollout |
Why teams compare them
Teams roll out Copilot for the productivity boost, then security review flags the same problem every time: Copilot can surface anything a person technically has access to, so years of over-permissioned SharePoint sites, inherited access, and widely shared OneDrive files suddenly become answerable by AI. The question is not whether the AI is smart, it is whether you can prove it only ever showed each person what they were cleared to see.
About 16% of business-critical data is overshared, an average of roughly 802,000 files at risk per organization.
Source: Concentric AI Data Risk Report67% of enterprise security teams are concerned about AI tools exposing sensitive information.
Source: MetomicThe US Congress restricted staff use of Copilot over data security concerns.
Source: Reported by multiple outletsAccess and oversharing
Both keep each person's existing permissions. The difference is what happens with sensitive content inside a file a person can partly see. Copilot answers from whatever the user can access, so a single over-permissioned folder becomes answerable. Brain governs at the access point and can withhold just the sensitive part of a document, so the rest stays useful without exposing what should stay hidden.
Proof you can hand to security
Microsoft offers strong governance tooling through Purview, but it is a separate program you configure and maintain. Brain treats proof as the product: every access goes into a tamper-evident log that records what happened without storing the content itself, and it can anchor a cryptographic record on-chain of exactly what the model answered over. When security or legal asks whether anything leaked, the answer comes with receipts.
Where Copilot is the better fit
If your company lives in Microsoft 365 and you want AI directly inside Word, Excel, Teams and Outlook, and you already run Purview governance, Copilot is deeply integrated and hard to beat for in-app productivity. Brain is not trying to write your emails. It is the governance and proof layer for using AI on everything your company knows, across every tool, not just Microsoft's.
Who each is best for
Questions, answered
Is AIVM Brain a replacement for Microsoft Copilot?
Not exactly. Copilot is a productivity assistant inside Microsoft 365. Brain is a governance layer for using AI on all your company knowledge, with proof. Many teams use Brain to govern AI access across every tool, including the data that also lives in Microsoft 365.
Does Brain fix the Copilot oversharing problem?
Brain governs at the point of access and can hide the sensitive part of a document instead of the whole file, and it records every access content-blind. It addresses the same oversharing concern from the governance side, across all your sources, not just Microsoft 365.
Does AIVM Brain work outside Microsoft 365?
Yes. Brain connects to Slack, GitHub, Google Drive, Notion, Box, Confluence, Salesforce and Telegram, with their permissions intact, and more through the same governed spine.