Mithrandir vs Microsoft 365 Copilot
Mithrandir is one company memory, running in your own cloud, that every AI agent your people already use can ask, with each person seeing only what they can already access at work.
Microsoft 365 Copilot is Microsoft's AI assistant inside Word, Excel, Outlook, Teams and the rest of Microsoft 365, working over your Microsoft 365 content.
At a glance
| Capability | Mithrandir | Microsoft 365 Copilot |
|---|---|---|
| Time to result | Seconds | Varies, M365 content only |
| AI cost per answer | 8.3× lower | Not published |
| Access control protocol | Exact to your company, automatically | Microsoft 365 permissions |
| Covers the whole company | Every team you have | Only Microsoft 365 content |
| Works with | Claude, ChatGPT, Copilot, Cursor and any agent on the market | Microsoft surfaces |
| History, with sources | Full history, sourced | Within M365 retention |
| Answer when access is limited | Complete for what you can see, nothing leaked | Invisible gaps |
| Runs in your own cloud | Yes, by default | No, Microsoft-hosted |
Based on public material, October 2026.
Where Mithrandir is the better choice
- Every tool your company uses, not only Microsoft 365: Slack, GitHub, Jira, Drive and the rest, 26 sources in one memory.
- 8.3× lower AI cost per answer, an 88% smaller AI bill, with 14× fewer tokens.
- 2.2× faster answers, and 100% of answers sourced.
- Each person sees only what they can already access at work: 0 leaks across more than 30,000 entries.
Live demo and pilots, 13 Sep to 19 Oct 2026, more than 30,000 entries. Method on the methodology page. How we measure
Pricing
Mithrandir
$29 per seat per month billed annually, or $35 monthly, for early customers.
Source: Mithrandir pricing, checked 25 October 2026
Standard price $49 per seat per month annually, $59 monthly. Enterprise priced per company.
Source: Mithrandir pricing, checked 25 October 2026
Microsoft 365 Copilot
Enterprise $30 per user per month, billed annually.
Source: microsoft.com, Microsoft 365 Copilot enterprise, checked 20 October 2026
Business $21 per user per month ($18 promotional price, July to December 2026).
Source: microsoft.com, Microsoft 365 Copilot pricing, checked 20 October 2026
Questions
- Can I use Mithrandir and Microsoft 365 Copilot together?
- Yes. They do different jobs. Copilot works inside Microsoft 365. Mithrandir gives the agents your people use the knowledge from every other tool as well.
- Does Mithrandir work with Copilot, Claude and ChatGPT?
- Yes. Claude, ChatGPT, Copilot, Cursor and 16 more agents ask Mithrandir directly, 20 in all. Nobody changes the tool they work in.
- Where does the data live?
- Mithrandir runs in your own cloud account on AWS, Azure or GCP, with your own model key. We never host your data, and restricted content never reaches a model. Microsoft 365 Copilot is hosted by Microsoft.
- What does switching cost?
- Little. Mithrandir reads the sources your company already has, 26 of them, so nothing is migrated by hand and nobody moves to a new app. It installs in one step on AWS, Azure or GCP, and the first useful answers come back the same week. Seats are $29 per month for early customers.
Last updated 25 October 2026 · Mert Uzun, co-founder