Grammarly

Grammarly earns its 4.7 rating on G2 because it does one thing better than anything else available: it improves writing quality in real time across every surface where you type, without requiring you to open a separate tool or copy text into a different application. The free plan is genuinely useful for casual writing, and Pro at $12 per month annually is one of the better-value AI writing subscriptions available when you factor in the bundled plagiarism detection and AI content detection alongside the writing improvements.

The main limitation is the AI prompt cap. Power users who lean heavily on the rewriting and generation features will bump against the 2,000 monthly limit before the end of the month. The March 2026 Expert Review controversy is worth knowing but does not affect the core grammar and rewriting functionality that most users rely on. For individuals and teams who write professionally across multiple tools every day, Grammarly Pro remains the most practical AI writing assistant available in 2026.

Grammarly is the most widely used AI writing assistant in the world, with the browser extension and desktop app working across virtually every application where you type. It corrects grammar, spelling, and punctuation in real time, but the more useful capability for daily professional writing is its tone detection and full sentence rewriting. Instead of flagging a passive-voice sentence and asking you to fix it manually, Grammarly proposes a rewritten version you can accept with one click. This frictionless editing experience is why over 40 million daily users keep the extension running continuously.

The free plan covers basic grammar and spelling with 100 monthly AI prompts, which is enough for occasional writing tasks. Pro at $12 per month billed annually steps that up to 2,000 monthly AI prompts alongside advanced rewriting, tone adjustment, plagiarism detection against 16 billion web pages, and AI text detection that flags AI-generated content in submitted work. The Pro plan in 2026 also renamed what was previously called Premium and Business into a single Pro tier, simplifying the purchase decision for most users. Teams up to 149 seats can use Pro with the same pricing structure.

The monthly billing price of $30 per month is significantly higher than the $12 per month annual rate, which makes the billing commitment important to evaluate before subscribing. Students and educators can get 50 percent off through SheerID verification. In March 2026, Grammarly faced criticism over its Expert Review feature, which briefly assigned real writers’ names to AI-generated feedback without their consent. The company removed the feature and apologized, but it is context worth noting for anyone evaluating Grammarly’s AI tools for professional or editorial use.