What It Does
Grammarly is an AI writing assistant that checks grammar, spelling, clarity, and tone across all platforms where you write. GrammarlyGO adds generative AI for drafting, rewriting, and brainstorming alongside the traditional correction features.
Key Features
- Grammar and spelling — real-time correction across all writing surfaces
- Tone detection — analyzes how your writing will be perceived
- Clarity improvements — suggestions for conciseness and readability
- GrammarlyGO — generative AI for drafting and rewriting
- Brand tones — enterprise custom voice profiles
- Cross-platform — browser extension, desktop app, mobile, Office, Google Docs
- Plagiarism detection — check for unoriginal content
Pricing Breakdown
| Tier | Price | Features |
|---|---|---|
| Free | $0 | Basic grammar and spelling |
| Premium | $12/mo | Full corrections, tone, GrammarlyGO |
| Business | $15/user/mo | Team features, brand tones, analytics |
Who It’s For
Everyone who writes in English — students, professionals, non-native speakers. The business tier serves teams needing consistent communication quality.
Competitive Position
Grammarly is the dominant writing assistant with massive distribution (30M+ DAU). Its moat is the cross-platform presence — it works everywhere you type. GrammarlyGO brings it into generative AI territory, competing with ChatGPT for quick rewrites. The challenge is that ChatGPT and Claude handle corrections as a side feature, potentially commoditizing Grammarly’s core value. However, the always-on, inline nature of Grammarly remains uniquely convenient.