Grammarly is the tool most people already have installed, and it earns its place in a workflow because it works everywhere. The browser extension catches errors in emails, web forms, Slack messages, and your CMS without any extra steps. That ubiquity is genuinely hard to replicate with other tools. For daily writers who produce client-facing content or professional communication, the $12/month Pro plan (annual billing) is one of the easier subscription decisions.
The free tier has gotten thinner over time: it's mostly grammar and spelling now, with the clarity, tone, and generative features gated behind Pro. If you're using Grammarly for anything beyond basic proofreading, you'll hit that wall quickly. The AI writing assistance in Pro is good for drafting emails and short-form copy, but Grammarly's real strength is still editing rather than generation. For longer-form content or more creative writing, a dedicated tool like Claude or ChatGPT produces better raw drafts: Grammarly cleans them up.