kitio.aiMicrosoft 365 Copilot vs SigmaOS
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Microsoft 365 Copilot starts at $25.20/mo and SigmaOS starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Copilot in Word and Excel
- Teams meeting recaps
- Outlook drafting
- Researcher agent
- Copilot Studio
- Workspaces
- Vertical tabs
- Tabs as tasks
- Split screen
- Lazy Search
- Airis AI companion
| Feature | Microsoft 365 Copilot | SigmaOS |
|---|---|---|
| Best for | AI assistant inside Word, Excel, Outlook, Teams and PowerPoint | Mac browser with workspaces, tabs as tasks and an AI companion |
| Category | Productivity | Productivity |
| Pricing model | Paid | Freemium |
| Starting price | $25.20/mo | See pricing page |
| Free plan | No | Yes |
| Made by | Microsoft | SigmaOS |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
Microsoft 365 Copilot starts at $25.20/mo and SigmaOS starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Copilot Business (add-on)
$25.20/mo
- Per user, monthly subscription
- Adds Copilot to a Microsoft 365 plan
- $21/mo if paid yearly
Business Standard + Copilot
$28.20/mo
- Per user, monthly subscription
- Desktop Office apps
- Copilot in Microsoft 365 apps
Business Premium + Copilot
$38.40/mo
- Per user, monthly subscription
- Advanced security
- Copilot in Microsoft 365 apps
Enterprise
Contact sales
- For organizations over 300 users
- Enterprise licensing
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Microsoft 365 Copilot
- Works inside familiar apps
- Uses your work data securely
- Strong admin controls
- Adds cost per user
- Quality varies between apps
SigmaOS
- Free to download
- Clear tab organization by workspace
- AI answers in the page context
- Mac only
- Takes getting used to after Chrome
- Pricing for extras not shown
Which one should you choose?
Choose Microsoft 365 Copilot if you want:
- Works inside familiar apps
- Uses your work data securely
- Strong admin controls
Watch out: adds cost per user.
Choose SigmaOS if you want:
- Free to download
- Clear tab organization by workspace
- AI answers in the page context
Watch out: mac only.
Microsoft 365 Copilot vs SigmaOS FAQ
What is the difference between Microsoft 365 Copilot and SigmaOS?
Microsoft 365 Copilot: AI assistant inside Word, Excel, Outlook, Teams and PowerPoint. SigmaOS: Mac browser with workspaces, tabs as tasks and an AI companion. Both are productivity tools.
Is Microsoft 365 Copilot or SigmaOS cheaper?
Microsoft 365 Copilot starts at $25.20/mo and SigmaOS starts at See pricing page. Check both pricing pages for current plans.
Do Microsoft 365 Copilot and SigmaOS have free plans?
Microsoft 365 Copilot: No. SigmaOS: Yes.
Who makes Microsoft 365 Copilot?
Microsoft 365 Copilot is made by Microsoft, based in United States.
Who makes SigmaOS?
SigmaOS is made by SigmaOS, based in United States.
Which should I choose, Microsoft 365 Copilot or SigmaOS?
Choose Microsoft 365 Copilot if you value works inside familiar apps and uses your work data securely. Choose SigmaOS if you value free to download and clear tab organization by workspace.