Grammarly is one of the few genuinely mature, well-engineered products in the AI writing space — its grammar/clarity engine has over a decade of refinement behind it, and the breadth of integrations (browser, desktop, mobile, Office, Docs) makes it genuinely convenient rather than a bolted-on gimmick. Enterprise-grade trust signals (SOC2-style accreditations, no training on user content) back up its legitimacy claims. That said, the free tier is stingy on generative AI prompts, the paid tiers get pricey fast, and much of what once differentiated Grammarly (tone/style suggestions, AI rewriting) is now table stakes in native tools like Google Docs and Word, so the core value proposition is under real competitive pressure.
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