Grammarly vs Microsoft Copilot — Which Is Better in 2026?
Grammarly vs Microsoft Copilot: independent head-to-head scored on Performance, Value, Reliability, and Ease of Use. See scores, pros, cons, and our verdict.
Grammarly
Grammarly
Most widely-used AI writing assistant — 50M+ users
Microsoft
Microsoft Copilot
Best AI assistant for Microsoft 365 users
8.3
Overall Score
8.5
Overall Score
WINNEROur Verdict
Microsoft Copilot scores higher overall (8.5/10 vs 8.3/10), winning on Performance and Value. Best AI for Microsoft 365 users. GPT-4o power natively in Word, Excel, Teams, and Outlook.
Pricing — Grammarly
Free · Premium $12/mo · Business $15/user/mo
Pricing — Microsoft Copilot
Free (Bing) · Microsoft 365 Copilot $30/user/mo
Grammarly
Pros
- ✓Works everywhere — browser, Word, Google Docs, mobile
- ✓Best grammar and tone detection in market
- ✓Plagiarism checker on Premium
Cons
- ✗Less generative than Claude/ChatGPT
- ✗Premium required for advanced suggestions
- ✗Can be overly prescriptive with style suggestions
Best For
Everyone who writes professionally — editing, tone, grammar, clarity
Microsoft Copilot
Pros
- ✓Deep Office 365 integration — Word, Excel, Teams
- ✓Free Bing tier available to all users
- ✓Enterprise-grade security and compliance
Cons
- ✗Best features require M365 subscription
- ✗Less powerful than ChatGPT/Claude on reasoning
- ✗Interface less flexible than competitors
Best For
Microsoft 365 enterprise users, Office document automation, Teams workflows
Choose Grammarly if…
- →Ease of Use is your top priority — Grammarly leads by 0.5 points
- →Everyone who writes professionally — editing
- →Grammarly support, documentation, and community suit your team
Choose Microsoft Copilot if…
- →Performance is your top priority — Microsoft Copilot leads by 0.5 points
- →Microsoft 365 enterprise users
- →You also value Value — Microsoft Copilot wins that dimension too
Frequently Asked Questions
Is Grammarly better than Microsoft Copilot?
Microsoft Copilot scores 8.5/10 overall vs 8.3/10 for Grammarly, with an edge on Performance and Value. That said, "Grammarly" may be the better pick if ease of use is your priority. The right choice depends on your use case.
What is the pricing difference between Grammarly and Microsoft Copilot?
Grammarly: Free · Premium $12/mo · Business $15/user/mo. Microsoft Copilot: Free (Bing) · Microsoft 365 Copilot $30/user/mo. Compare usage volumes and features needed to determine total cost of ownership for your team.
Which is better for microsoft 365 enterprise users?
Microsoft Copilot is generally stronger here, scoring 8.5/10 overall. Best AI for Microsoft 365 users. GPT-4o power natively in Word, Excel, Teams, and Outlook. For more niche requirements like ease of use, Grammarly may be worth evaluating.
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