Best AI Tools for Grammar Checking and Editing

Fix grammar and spelling, improve clarity and tone, and rephrase sentences.

Short answer

For grammar checking and editing, the most-visited AI tool we track is Grammarly AI, followed by QuillBot and ProWritingAid. Grammarly AI has a free plan. The lowest paid entry price is Wordtune at $6.99/mo (Plus). Ranked by real web traffic (Tranco), not by who pays.

Updated Oct 23, 2026 · Data: Tranco web traffic ranks, verified pricing

1
Grammarly AI
AI writing assistant for grammar, tone, clarity and style.
#381 global trafficFreemium · $30/mo (Pro)Free plan
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2
QuillBot
AI paraphrasing, summarization and grammar checking tool.
#3,775 global trafficFreemium · $19.95/mo (Premium)Free plan
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3
ProWritingAid
Comprehensive AI writing editor for grammar style and readability improvement.
#30,501 global traffic
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4
Wordtune
AI writing companion that rewrites and improves sentences in context.
#53,289 global trafficFreemium · $6.99/mo (Plus)Free plan
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Frequently asked questions

What is the best AI tool for grammar checking and editing?

For grammar checking and editing, the most-visited AI tool we track is Grammarly AI, followed by QuillBot and ProWritingAid.

Is there a free AI tool for grammar checking and editing?

Yes. Grammarly AI, QuillBot and Wordtune have a free plan or free tier.

What is the cheapest AI tool for grammar checking and editing?

Among the tools we list, Wordtune has the lowest paid plan at $6.99/mo (Plus).

Grammarly AI vs QuillBot →

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