Comparing suites is different from comparing single apps. Microsoft 365 is Word, Excel, PowerPoint, Outlook, Teams and SharePoint. Rixoffice is five editors — Docs, Sheets, Slides, PDF and Markdown — in one desktop app with AI included. Here is the honest mapping.
What overlaps and what does not
| Microsoft 365 | Rixoffice equivalent | Notes |
|---|---|---|
| Word | RixDocs | Ribbon UI, track changes, compare, .docx byte-preserving |
| Excel | RixSheets | Formulas, pivots, slicers, Rust xlsx engine |
| PowerPoint | RixSlides | Byte-fidelity .pptx, AI deck generation, animations |
| (Acrobat-style PDF tools) | PDF Editor | Text/image editing, signing, forms, Bates numbering |
| OneNote/plain text tools | Markdown Studio | Slash commands, frontmatter, DOCX export |
| Outlook, Teams, SharePoint | Not included | Rixoffice is an editor suite, not a collaboration cloud |
The AI price difference
This is where the suites diverge sharply:
- Microsoft 365 Copilot is a per-user add-on at roughly $30/month on top of your Microsoft 365 plan.
- Rixoffice includes AI in every plan: $0.59 Starter (20 credits), $1.78 Standard AI (99), $4.78 Pro API & Local (399), $11.96 Premium API (1,200). RixSheets AI has unlimited pages on all plans.
- Rixoffice also lets you bring your own API key (OpenAI, Claude, Gemini, DeepSeek, OpenRouter) or run Ollama locally, which costs whatever your provider or electricity charges — and works on a plane.
Privacy architecture
Microsoft 365 stores documents in OneDrive/SharePoint and processes Copilot requests in the cloud. Rixoffice is local-first: files live in your folders, editing and saving never need a network, and with Ollama the AI runs on your own hardware. For contracts, medical records or client NDA work, that architecture difference is the headline.
Where Microsoft 365 is genuinely ahead
Be fair to the incumbent:
- Email, calendar and meetings (Outlook, Teams) are unmatched in scope.
- SharePoint/OneDrive collaboration with live co-authoring across the suite.
- Enterprise administration, compliance tooling and audit ecosystems.
If your organization is built on those, Rixoffice complements rather than replaces them.
Who should choose which
- Choose Rixoffice if your daily work is documents, numbers, decks and PDFs — and you want capable AI, offline-first privacy and one low subscription for all five apps.
- Choose Microsoft 365 if cloud co-authoring, Teams and enterprise compliance are the core of how your organization works.
- Run both. Because Rixoffice writes genuine .docx/.xlsx/.pptx files, it slots into Microsoft-centric teams without anyone noticing format friction.
What to explore next
- The dedicated site comparisons: /vs/microsoft-office
- Plans and pricing explained
- AI privacy in Rixoffice