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AI Tools to Fix Grammar (2026)

AI grammar checkers now do more than catch typos. They flag the sentence that reads as rude, shorten a paragraph that lost its point, and rewrite for the formality the reader expects. Where they differ is placement and language coverage.

Grammarly runs as a browser extension and desktop app on top of the tools you already write in, so there is no separate window and no copy-paste step, but it covers English only.

DeepL Write works in a handful of European languages and leans towards style rather than rules. General assistants fix grammar too, at the cost of pasting text back and forth.

Free tiers are genuinely usable for occasional corrections; paid plans matter when you want full-sentence rewrites, a saved style guide or a plagiarism check.

Quick answer

Grammarly is the practical answer for English, because it corrects inside Gmail, Docs and Word rather than in a separate window. DeepL Write handles German, French, Spanish, Italian and Portuguese as well as English.

  1. DeepLStart here
  2. GrammarlyWriting specialist
  • 2tools listed
  • 2of 2scored by an editor
  • 2of 2with a free plan
  • $20.245/momedian entry price
  • Aug 26last pricing check
Top picks

Top 2 AI tools to fix grammar right now

  1. 1 Editor's pick

    DeepL

    Translation    8.6

    Machine translation for 30+ languages, with glossaries and document files

    Price
    $10.49/mo
    Free plan
    Yes
    API
    Yes
    Pricing checked Aug 26
  2. 2 Writing specialist

    Grammarly

    Writing    8.1

    Grammar, tone and rewriting help in every app you already write in

    Price
    $30/mo
    Free plan
    Yes
    API
    No
    Pricing checked Aug 26

Compare the best AI tools to fix grammar

Ranked by editor score, then by listing completeness. Entry price is the cheapest paid plan.

ToolBest forFromFree planPlatformsScore
1DeepLTeams translating documents who need consistent terminology and EU-grade privacy$10.49/mo YesWeb app, Windows, macOS +38.6
2GrammarlyAnyone writing English daily who wants corrections without leaving their app$30/mo YesWeb app, Windows, macOS +48.1
Buying guide

How to pick an AI tool to fix grammar

4 checks, in the order that saves the most time.

  1. Confirm the language before anything else

    Most dedicated checkers are English only. If you write in French, German or Spanish, the shortlist is short, and a general assistant may be the better answer.

  2. Prefer corrections where you type

    A browser extension applied inside Gmail and Docs gets used every day. A separate web editor gets used for the first week and then forgotten.

  3. Look at what the free plan covers

    Spelling, grammar and basic tone are usually free forever. Full-sentence rewrites, plagiarism checks and style guides sit behind the paid tier.

  4. Watch what the suggestions do to your voice

    Accepting every suggestion flattens writing towards a neutral register. Treat the tool as a flag, not an autopilot, especially on anything with personality.

Budget

Free, freemium or paid: AI tools to fix grammar by pricing model

Entry price is the cheapest paid plan on monthly billing. Every listing shows the date its pricing page was checked.

Categories for AI tools to fix grammar

Related use cases

Questions

Fix grammar with AI: FAQ

Short, factual answers on pricing, free plans and how AI tools to fix grammar are ranked here.

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What is the best AI grammar checker?

Grammarly for English, because it corrects inside the apps you already write in and its free plan is permanent. DeepL Write if you need German, French, Spanish, Italian or Portuguese.

Is there a free AI grammar checker?

Yes. Grammarly corrects spelling, grammar and tone for free with no time limit, and DeepL Write has a free tier. Rewrites and plagiarism checks require a paid plan.

Can ChatGPT fix grammar as well as Grammarly?

The corrections are comparable. The difference is workflow: an assistant means pasting text in and out, while a checker applies suggestions in place while you write.

Do grammar checkers work in Google Docs and Gmail?

Grammarly does, through its browser extension, along with Word, Outlook, Slack and most web text fields. Coverage varies for other tools, so check before subscribing.

Will an AI grammar checker make my writing sound generic?

It can, if you accept every suggestion. Rules-based corrections are safe to apply; tone and rewrite suggestions deserve a judgement call on anything you want to sound like you.

For makers

Built an AI tool that helps fix grammar? Get it listed free

A complete listing on Webanas ranks for your product name plus "pricing", "alternatives" and "review" queries. No fee, no affiliate deal, no sponsored tier.

  • Structured page with pricing table, platforms and integrations
  • Reviewed by an editor, usually within a few days
  • Dashboard to update your listing whenever pricing changes
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