The Verdict
Grammarly has evolved from a grammar checker into a comprehensive AI writing assistant that adjusts tone, rewrites for clarity, and generates content. With browser extensions, desktop apps, and integrations across virtually every writing surface, it is the most ubiquitous AI writing tool. The free tier catches basic errors; the $30/month Premium plan adds the AI features that justify the price.
What It Does
Grammarly checks grammar, spelling, punctuation, and style across all writing platforms through browser extensions, desktop applications, and mobile keyboards. Premium features include tone detection and adjustment, full-sentence rewrites for clarity, plagiarism detection, vocabulary suggestions, and generative AI capabilities that can draft, expand, and summarize text. GrammarlyGO provides AI-powered content generation integrated into the editing interface.
What We Liked
- Everywhere integration: Works in Gmail, Docs, Slack, Word, social media — any text field in any browser. No switching between tools.
- Tone adjustment: Rewriting content to be more formal, friendly, confident, or diplomatic is practical for professional communication.
- Consistency with style guides: Enterprise users can enforce brand voice, terminology, and writing standards across teams.
What We Didn’t Like
- Aggressive upselling: The free tier constantly prompts for Premium, which degrades the user experience.
- Privacy concerns: All text is processed through Grammarly’s servers, which may conflict with confidentiality requirements.
- Price for individuals: At $30/month, Premium is expensive for individuals when ChatGPT can perform similar writing tasks at $20/month with broader capabilities.
Pricing Breakdown
Free with basic grammar and spelling. Premium at $30/month for full AI features. Business at $25/user/month with team analytics and style guides. Enterprise pricing with SAML SSO and advanced admin controls.
The Bottom Line
Grammarly is most valuable for professionals who write extensively in English and need consistent quality across platforms. The everywhere-integration is its killer feature — no other writing tool is as seamlessly embedded in daily workflows. The question is whether $30/month for a writing assistant is justified when general-purpose AI tools offer similar capabilities alongside much more.
