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Grammarly

Pricing: Freemium

Verified: Yes

Editor rating: 4.5/5

Updated: August 2026

AI writing assistant for grammar, spelling, tone and rewrites that works across browsers, Word, Docs and email — free tier included.

Editor's take: “The most widely used AI writing assistant, with a free tier that is genuinely useful for correctness” — Sohail Akhtar

Free tier (verified July 2026): 100 generative AI prompts/month, plus unlimited spelling, grammar and tone checks — catch: Tone adjustment, full-sentence rewrites, fluency help, citation consistency, plagiarism and AI-text detection are all Pro-only

Top Alternatives

Pricing & free tier — last checked August 19, 2026

How we checked: read directly from the vendor's own pricing page — source

Grammarly's free plan is real, but capped at 100 AI prompts a month — and every feature the brand is known for beyond correctness sits behind Pro.

What	What we found	Status
Free plan	$0 — spelling and grammar correction, tone detection, and 100 generative AI prompts per month	Confirmed
Free AI prompt cap	100 prompts/month, against Pro's 2,000 per member per month	Confirmed
Pro	$12/month	Confirmed
Pro-only features	Tone adjustment, full-sentence rewrites, fluency, inclusive language, citation consistency, plagiarism detection, AI-text detection	Confirmed
Enterprise	Custom pricing — style guides, brand tones, snippets, analytics, account roles, dedicated support	Confirmed
Annual price	Not published on the plans page; only the $12/month Pro figure is shown	Vendor doesn't publish this

Editor verification notes

Read from the logged-out public plans page in USD; regional pricing and promotional offers may differ.
This is a read of the vendor's own pricing page, not a first-party account test. We have not verified the 100-prompt cap by exhausting it.

Checked by the TheToolsVerse Verification Desk — by reading the vendor's own published pages, not by testing the product in an account. Grammarly can change prices at any time without notice. The date above is the last time we looked; if it looks old, treat every figure here as unconfirmed and check Grammarly directly before paying.

How we verify →

Editor's Verdict

Official Review

Grammarly is the default AI writing assistant for most people who write in a browser — grammar and spelling correction, tone detection, and full-sentence rewriting across Docs, Gmail, Slack and Word. The free tier is genuinely usable for correctness, but the features people most associate with the brand are not in it: tone adjustment, full-sentence rewrites, plagiarism detection and AI-text detection are all Pro. Free also caps generative AI at 100 prompts a month against Pro's 2,000 per member. Best for anyone who writes constantly inside other apps and wants correction everywhere; a poor fit for long-form drafting, where a dedicated writing tool does more per dollar.

4.5 / 5.0

Editor Rating

Reviewed by Sohail Akhtar

Lead Editor & Founder

Pros

What we like

Works inside the apps you already write in — browser extension, Word, Google Docs, Gmail and Slack rather than a separate editor
The free tier is genuinely useful on its own for spelling, grammar and tone detection, with no card required
Tone detection flags how a message will land before you send it, which is the feature most users keep it for
Pro's 2,000 AI prompts per member per month is a high ceiling for everyday rewriting and drafting

Cons

Limitations

The headline features are paywalled — tone adjustment, full-sentence rewrites, plagiarism and AI detection are all Pro-only
Free generative AI is capped at 100 prompts a month, which a single afternoon of drafting can exhaust
Weaker at long-form generation than dedicated drafting tools; it is a corrector first and a writer second
No annual price is published on the plans page, so the only public figure is the $12/month Pro rate

Pricing

✓ Free tier re-verified July 2026: 100 generative AI prompts/month, plus unlimited spelling, grammar and tone checks — Tone adjustment, full-sentence rewrites, fluency help, citation consistency, plagiarism and AI-text detection are all Pro-only

Plan	Details
Free	$0 — spelling and grammar correction, tone detection, and 100 generative AI prompts per month. No card required.
Pro	$12/month — 2,000 AI prompts per member per month, plus tone adjustment, full-sentence rewrites, fluency and inclusive-language support, citation consistency, plagiarism detection and AI-text detection.
Enterprise	Custom pricing — adds style guides, brand tones, snippets, analytics, enterprise privacy, account roles and dedicated support.

Grammarly has a genuinely free plan at $0 covering spelling, grammar and tone detection plus 100 generative AI prompts per month. Pro is $12/month and raises the allowance to 2,000 prompts per member per month while unlocking tone adjustment, full-sentence rewrites, fluency and inclusive-language help, citation consistency, plagiarism detection and AI-text detection. Enterprise is custom-priced and adds style guides, brand tones, snippets, analytics, account roles and dedicated support. No annual price is published on the plans page (checked 19 August 2026).

What is Grammarly?

Grammarly checks grammar, spelling and tone wherever you already write — browser, Microsoft Word, Google Docs, Gmail and Slack — and rewrites full sentences on paid plans. The free plan covers spelling, grammar and tone detection plus 100 generative AI prompts a month. Pro raises that to 2,000 prompts per member per month and unlocks tone adjustment, full-sentence rewrites, fluency help, inclusive language, citation consistency, plagiarism detection and AI-text detection. Enterprise adds style guides, brand tones, snippets, analytics, account roles and dedicated support under custom pricing. Read our guide.

Associated Tags

ai writing assistant, grammar checker, tone detection, sentence rewriter, plagiarism checker, free ai writing

Key Features

Grammar and spelling correction

Tone detection

Full-sentence rewrites (Pro)

Plagiarism detection (Pro)

AI-text detection (Pro)

Works in browser, Word, Docs, Gmail and Slack

Real Use Cases

How professionals leverage Grammarly - AI Writing Assistant with Grammar, Tone & Rewrites

Discover practical workflows and real-world scenarios where Grammarly delivers key solutions.

Professionals writing email, Slack and documents all day who want correction inside existing apps rather than a new editor

Non-native English writers who need fluency and tone feedback on everyday business writing

Students and academics checking grammar, citation consistency and originality before submission

Teams standardising written tone across support, sales and marketing communication

Buyer's guide

12 Best AI Writing Tools in 2026 — With the Real Free Limits

Grammarly's free plan is 100 AI prompts a month. Rytr gives 10,000 characters. Sudowrite has no free plan at all. The exact limit for each, with check dates.

Read the full comparison →

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Frequently Asked Questions

Is Grammarly actually free?

Yes, there is a real free plan at $0 with no card required — it covers spelling and grammar correction and tone detection, plus 100 generative AI prompts a month. But the features most people associate with Grammarly are not in it: tone adjustment, full-sentence rewrites, plagiarism detection and AI-text detection are all Pro-only.

How many AI prompts does the free Grammarly plan include?

100 per month. Pro raises this to 2,000 prompts per member per month — a 20x difference, and the main reason heavy users upgrade.

How much does Grammarly Pro cost?

$12 per month. Grammarly does not publish an annual price on its plans page, so $12/month is the only public figure (checked 19 August 2026). Enterprise is custom-priced.

Does the free plan check plagiarism?

No. Plagiarism detection and AI-text detection are both Pro features. The free plan is limited to correctness and tone detection.