Grammarly

AI-assisted grammar, style and tone checker with sentence rewriting, plagiarism detection, and a free plan capped at 100 AI prompts a month.

Visit Grammarly

About

In practice. What you can do with Grammarly.

Grammarly checks grammar, spelling and style across writing surfaces, with AI features on the paid Pro plan: full sentence rewrites, tone adjustment, and fluency suggestions aimed at non-native English writers, plus plagiarism and AI-generated-text detection.

The free plan covers basic corrections and 100 AI prompts a month; Pro runs $12 a month for full rewriting and 2,000 prompts per member, though it wasn't confirmed whether that rate is monthly or annual billing. Team features (roles, groups, shared style guides) sit on Pro and Enterprise, with SSO, SCIM and data-loss prevention reserved for a custom Enterprise quote. It suits a consultant polishing client-facing English writing.

Practical uses

Polish a client email or report for grammar, tone and clarity before sending,Real-time AI-assisted rewriting.
Check drafts for accidental plagiarism or AI-generated-text flags on the Pro plan before delivering client work.

Features & use cases

Amelioration style

Anglais professionnel

Correction texte

For. What works in its favour.

Full sentence rewriting and tone adjustment go beyond basic grammar checking.
Plagiarism and AI-generated-text detection included on Pro.

Pays off from

18 minsaved a month

Grammarly costs $12/month. If your hour is worth $40, those 18 min cover it.

Your hour is worth$40/h

Against. What to plan for.

AI prompt usage is capped even on the paid Pro plan (2,000/member/month).
Advanced security and compliance features require a custom Enterprise quote.

Too expensive if

You use it less than once a month
ChatGPT (free) already covers the essentials for occasional use

Pricing. What does Grammarly cost ?

Free

Permanent free plan

Spelling/grammar corrections
Writing-tone detection
100 AI prompts per month

Pro

ToolTrim reference price

$12/mo

Per user.

Full sentence rewrites
Tone adjustment
Fluency suggestions
Plagiarism and AI-generated-text detection
2,000 AI prompts/member/month
Account roles
Up to 2 user groups and 1 style guide/brand tone
Team analytics

Enterprise

Custom quote. Per user.

Everything in Pro plus proactive AI, dedicated support, BYOK encryption, custom roles, data loss prevention, SAML SSO, SCIM, managed mode, unlimited prompts/style guides/brand tones/user groups, and advanced security controls (confidential mode, audit logs, session timeout).

Checked on September 25, 2026Official pricing

Alternatives. What could replace Grammarly?

ChatGPT4.2/5 · ExcellentFree, then from $20/moConversational AI assistant for writing, coding, and analysis, free on a base model or unlocked further on paid tiers up to a developer API.

Claude3.9/5 · Very goodFrom $20/moAPI platform for accessing Claude models (Opus, Sonnet, Haiku, Fable) with prompt caching, batch processing, and web search capabilities for production integration.

Detailed comparisons

Our verdict. What to know about Grammarly.

How the score breaks down

Added value

Pro adds full rewrites, tone, plagiarism and AI-generated-text detection for a moderate per-seat price, but whether $12 is monthly or annual billing wasn't confirmed, so value can't be fully judged.

Simplicity

Neutral score: time and skill needed to get a first useful result are not covered by the collected sources.

Fit for purpose

Grammar, style and tone checking works across surfaces, but AI-heavy workflows are capped even on Pro (2,000 prompts/member/month), which can push heavy users toward another AI tool.

Performance

Pro covers full rewriting, tone, plagiarism/AI detection and basic team features, while advanced security/compliance (SSO, SCIM, DLP, BYOK) requires a custom Enterprise quote.

Reversibility

Neutral score: export or portability of stored style guides and brand tones is not covered by the collected sources.

Decided? Visit Grammarly or compare alternatives

AI. What it changes for Grammarly.

AI seriously threatens it

Go further with AI

Grammarly itself packed in generative AI: rewriting, tone adjustment, full-sentence suggestions. But the real issue is elsewhere: a general assistant like ChatGPT or Claude does everything Grammarly does and much more (rewrite, translate, summarize, adapt tone, explain a rule), often for free.

Can AI replace it?

Let us be honest: for most uses, a general AI replaces Grammarly. Where Grammarly keeps an edge is seamless integration everywhere you write (email, browser, Word), in real time, with no copy-paste. If that friction does not bother you, ChatGPT or Claude make the subscription hard to justify. Verdict: seriously threatened, worth keeping mainly for the comfort of real-time integration.