According to AI Tier List, Microsoft Editor and ProWritingAid are both rated Tier B. The better choice depends on your specific use case.
 |  | |
|---|---|---|
| Tier | Tier B | Tier B |
| Rating | 3 / 5 | 3 / 5 |
| Pricing | Freemium | Freemium |
| Category | Grammar Correction | Grammar Correction |
| Best For | writing assistant, grammar check, microsoft 365, productivity, style guide | writing assistant, grammar checker, style guide, readability, editing |
Deep integration with Microsoft 365, Real-time grammar and spelling check, Style and clarity suggestions, Multi-language support, User-friendly interface
Requires Microsoft 365 subscription, Limited advanced writing features, Lacks creative writing support, No standalone application
Detailed style and readability analysis, wide range of writing reports, MS Office and web browser integration, plagiarism checker, in-depth editing features for authors
Inaccuracy of generative AI features, reduced cost-effectiveness due to price increases, slow processing speed for long documents, limited support for non-English languages
