Self-hosted alternatives to Microsoft 365 Copilot
Short answer
The self-hosted alternatives to Microsoft 365 Copilot in our catalog are Open WebUI, LibreChat and Onyx (formerly Danswer). Open WebUI: Company-wide ChatGPT-style chat with document upload, web search and tools.
Microsoft 365 Copilot Business (add-on) costs $25.20 per user per month on monthly billing, or $21 per user per month on annual billing, according to Microsoft's official pricing information checked on Oct 22, 2026.
Self-hosting LibreChat starts at about €6.49/month for a Hetzner Cloud server that meets its official minimum spec, and that server cost does not grow per user. For comparison, 10 Microsoft 365 Copilot seats are $252/month. Model API usage (or your own GPU), backups and admin time come on top.
Main gap: None of these works inside Word, Excel, Outlook or Teams the way Copilot does; they run as separate web apps.
Last updated · Microsoft 365 Copilot price checked Oct 22, 2026 on the official page · sources
Which self-hosted apps replace Microsoft 365 Copilot
| App | What it replaces | Est. server cost | Official hardware | License | Status | Stars |
|---|---|---|---|---|---|---|
| Open WebUI measured test data | Company-wide ChatGPT-style chat with document upload, web search and tools. | not estimated (no official RAM figure) | not published | Open WebUI License (BSD-3-Clause style with branding clause) | Active | 156k |
| LibreChat measured test data | Team chat across many AI providers with agents and file search. | from €6.49/mo | minimum 1 vCPU · 1 GB RAM (recommended 2 GB RAM) | MIT | Active | 46.1k |
| Onyx (formerly Danswer) | Chat and search across 50+ workplace apps. | from €69.99/mo | minimum 4 vCPU · 10 GB RAM · 32 GB disk (recommended 8 vCPU · 16 GB RAM · 500 GB disk) | MIT (Community Edition) + Onyx Enterprise License (ee directories) | Active | 32.8k |
"What it replaces" is our summary of each project's own description. Hardware and cost come from the project's official requirements; see each app page for sources.
What self-hosting does not replace
- None of these works inside Word, Excel, Outlook or Teams the way Copilot does; they run as separate web apps.
- You connect your own model (API or self-hosted).
Cost: Microsoft 365 Copilot vs self-hosting
| Team size | Microsoft 365 Copilot, monthly billing | Microsoft 365 Copilot, annual billing (per month) | Self-host LibreChat (server, min → recommended spec) |
|---|---|---|---|
| 5 users | $126/mo | $105/mo | €6.49–€11.99/mo |
| 10 users | $252/mo | $210/mo | €6.49–€11.99/mo |
| 25 users | $630/mo | $525/mo | €6.49–€11.99/mo |
| 50 users | $1,260/mo | $1,050/mo | €6.49–€11.99/mo |
Self-hosted server cost per app
- Open WebUI: not estimated (no official RAM figure).
- LibreChat: from €6.49/mo (recommended spec: €11.99/mo).
- Onyx (formerly Danswer): from €69.99/mo.
Microsoft 365 Copilot: Microsoft 365 Copilot Business (add-on). Per user per month, added to an existing Microsoft 365 business plan. A promotional annual price of $18 was shown on the checked date. Self-host estimate: cheapest Hetzner Cloud Regular Performance (shared AMD vCPU) plan meeting the project's official RAM and vCPU figure, list price read 2026-10-22, EUR excl. VAT. It covers the server only: not model API usage or a GPU, backups, or your time. A server at the official minimum spec may not be enough for large teams; the recommended spec costs more where listed. We do not convert currencies.
Self-hosted Microsoft 365 Copilot alternatives: FAQ
What is the best self-hosted alternative to Microsoft 365 Copilot?
Open WebUI: Company-wide ChatGPT-style chat with document upload, web search and tools. LibreChat: Team chat across many AI providers with agents and file search. Onyx (formerly Danswer): Chat and search across 50+ workplace apps. Which fits depends on the features you need; see the gaps below.
How much does Microsoft 365 Copilot cost?
Microsoft 365 Copilot Business (add-on) costs $25.20 per user per month on monthly billing, or $21 per user per month on annual billing, according to Microsoft's official pricing information checked on Oct 22, 2026. Per user per month, added to an existing Microsoft 365 business plan. A promotional annual price of $18 was shown on the checked date.
How much does it cost to self-host a Microsoft 365 Copilot alternative?
Open WebUI: not estimated (no official RAM figure); LibreChat: from €6.49/mo; Onyx (formerly Danswer): from €69.99/mo. The software is free to download; the estimate is the cheapest Hetzner Cloud plan meeting the project's official RAM and vCPU figure (EUR, excl. VAT, server only).
What does a self-hosted Microsoft 365 Copilot alternative not do?
None of these works inside Word, Excel, Outlook or Teams the way Copilot does; they run as separate web apps. You connect your own model (API or self-hosted).
Can a business use these Microsoft 365 Copilot alternatives commercially?
Open WebUI: Open WebUI License (BSD-3-Clause style with branding clause) (Custom / conditional), internal business use allowed. LibreChat: MIT (Permissive), internal business use allowed. Onyx (formerly Danswer): MIT (Community Edition) + Onyx Enterprise License (ee directories) (Open core), internal business use allowed. Not legal advice; read each license.
Related
Sources
- Microsoft 365 Copilot pricing (checked 2026-10-22): www.microsoft.com/en-us/microsoft-365-copilot/pricing
- Open WebUI GitHub repository: github.com/open-webui/open-webui
- Open WebUI documentation: docs.openwebui.com/getting-started/quick-start/
- Open WebUI license: github.com/open-webui/open-webui/blob/main/LICENSE
- LibreChat GitHub repository: github.com/LibreChat-AI/LibreChat
- LibreChat documentation: www.librechat.ai/docs/local/docker
- LibreChat license: github.com/LibreChat-AI/LibreChat/blob/main/LICENSE
- Onyx (formerly Danswer) GitHub repository: github.com/onyx-dot-app/onyx
- Onyx (formerly Danswer) documentation: docs.onyx.app/deployment/getting_started/resourcing
- Onyx (formerly Danswer) license: github.com/onyx-dot-app/onyx/blob/main/LICENSE
- Hetzner Cloud pricing used for cost estimates (read 2026-10-22): www.hetzner.com/cloud/regular-performance
Microsoft 365 Copilot is a trademark of Microsoft. SelfHostMap is independent and not affiliated with any vendor listed. Prices change; check the official page before you decide. Spotted something out of date? Tell us.