We’ve used Grammarly across emails, blog content, client reports, ad copy, and internal documents for over two years, on both the Free plan and Pro. For this review, we focused primarily on how it performs as a writing improvement tool, while also testing its newer content-generation features.
Grammarly works across most places people write. That includes its browser extensions, desktop apps, Google Docs, Microsoft Word, Slack, Gmail, and mobile devices. You rarely need to copy your text into a separate editor. Grammarly says it now works across more than one million apps and websites, although specific features are not available on every platform. That broad coverage remains its biggest advantage over standalone AI writing tools.
The Free plan handles spelling, grammar, punctuation, and basic tone detection. It also includes 100 generative AI prompts per month, making it useful for occasional drafting and rewriting rather than just proofreading.
Pro adds full-sentence rewrites, clarity suggestions, tone adjustments, plagiarism checking, AI text detection, and 2,000 standard generative AI prompts per month. It also includes team features such as style guides, brand tones, snippets, knowledge sharing, and usage analytics.
Tone detection remains one of the most useful everyday features. Grammarly flags writing that sounds uncertain, overly casual, overly formal, or less confident than intended. That is helpful for non-native English speakers, but it is equally useful for anyone writing client emails, reports, proposals, or public-facing content.
Grammarly can now create emails, summaries, blog drafts, articles, advertisements, social posts, and other content from a prompt. Grammarly Docs also includes agents for proofreading, paraphrasing, citations, plagiarism checking, AI detection, audience reactions, and evaluating written work.
Where Grammarly still reaches its limit is campaign execution and structured long-form production. It can write the individual pieces, but it does not provide the deeper SEO workflows, campaign planning, reusable marketing processes, or large-scale content operations found in platforms such as Jasper or Writesonic. Grammarly is capable of producing a first draft. It is simply more convincing as an editor than as a complete marketing platform.
It also overcorrects at times. Grammarly can remove wording that gives a piece personality and replace it with something technically cleaner but less distinctive. Writers with a strong voice will still need to reject suggestions instead of accepting every correction automatically. The newer voice profiles and rewriting controls help, but they do not remove the need for judgment.
