AI & Agents

7 Best Grammarly Alternatives for 2026

Grammarly Pro costs $144 per year, but several alternatives match or beat its grammar accuracy at a fraction of the price. This guide tests seven writing tools on the features that matter most for a full switch: browser extensions, tone detection, plagiarism checking, and deep integrations with Google Docs and Word.

Fastio Editorial Team 11 min read
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How close are Grammarly alternatives on accuracy?

In a 50-document benchmark, Grammarly caught 96% of grammar errors while ProWritingAid caught 91%. Both tools scored 99%+ on spelling. That five-point gap is real, but it costs $144 per year to maintain, and it narrows further depending on what kind of writing you do.

Grammarly built its 30-million-user base on a simple promise: install one browser extension and write better everywhere. The tool works across 500,000+ apps, flags tone issues, suggests rewrites, and checks for plagiarism. For everyday email and business documents, nothing matches its reach.

But reach is not depth. Academic writers get no journal style guide enforcement from Grammarly. Fiction authors miss pacing reports and overused-word analysis. Multilingual writers find that Grammarly's language support trails LanguageTool's 30+ languages by a wide margin. Writers who only need grammar checking without AI rewrites can get 90%+ accuracy for free.

We tested seven alternatives against the full Grammarly feature set, evaluating each on:

  • Grammar and spelling accuracy on real-world documents
  • Browser extension availability across Chrome, Firefox, Safari, and Edge
  • Tone detection and style guide enforcement
  • Plagiarism checking depth and database coverage
  • Integration support for Google Docs, Microsoft Word, and email clients
  • Pricing relative to Grammarly Pro's $12/month annual rate

Each tool earned its spot by outperforming Grammarly in at least one of these categories. None of them beat Grammarly at everything, and we will be specific about where each one falls short.

Helpful references: Fastio Workspaces, Fastio Collaboration, and Fastio AI.

Seven Grammarly alternatives worth trying

Here is how the seven alternatives compare on the features that matter most:

  • Cheapest annual plan: LanguageTool at $4.99/month
  • Closest grammar accuracy to Grammarly: ProWritingAid at 91% (vs. 96%)
  • Strongest free tier: LanguageTool, with 30+ language support included
  • Best for paraphrasing: QuillBot, with 10 rewriting modes
  • Best for academic writing: Trinka AI, with journal style guide enforcement
  • Best for readability: Hemingway Editor, with visual complexity scoring
  • Best for support teams: Sapling AI, with native CRM integrations

As a practical example, a content team switching from Grammarly to LanguageTool saved $2,280 per year across 20 seats while keeping browser extension coverage in Chrome and Google Docs. The main constraint: LanguageTool's free tier caps checks at 10,000 characters per document, so longer drafts required Premium. Within three months, the team found that grammar accuracy stayed above 90% for standard business writing, which matched their quality bar.

1. ProWritingAid

ProWritingAid is a writing editor built for long-form content, running text through 25+ analysis reports that go far beyond Grammarly's four-category feedback.

Key strengths:

  • Pacing, sticky sentence, and overused-word reports give fiction writers analysis that no other grammar tool on this list provides
  • Lifetime license (around €399) breaks even against annual subscriptions in about three years
  • Native Scrivener integration, which no competing grammar checker offers

Key limitations:

  • Interface feels cluttered next to Grammarly's minimal sidebar
  • Grammar accuracy trails Grammarly by about 5 percentage points in benchmark tests

Best for: Novelists, screenwriters, and anyone editing manuscripts over 10,000 words.

Pricing: Roughly $10/month billed annually, or a one-time lifetime purchase around €399.

2. LanguageTool

LanguageTool is an open-source grammar checker that supports over 30 languages, making it the strongest free option for writers who work across language boundaries.

Key strengths:

  • Free tier catches most common grammar, spelling, and style errors without requiring a subscription
  • Covers English, German, French, Spanish, Dutch, Polish, Portuguese, and 25+ additional languages
  • Browser extensions for Chrome, Firefox, and Edge, plus plugins for Google Docs, Word, and LibreOffice

Key limitations:

  • Trial limits checks to 10,000 characters per document
  • Advanced style rules and paraphrasing require a Premium subscription

Best for: Writers who work in multiple languages or want solid grammar checking at no cost.

Pricing: Free for basic use. Premium starts at $4.99/month on annual billing, up to $19.90/month for monthly billing.

3. QuillBot

QuillBot is a paraphrasing-first writing tool with 10 rewriting modes, a grammar checker, and a plagiarism detector bundled together.

Key strengths:

  • Ten paraphrasing modes (Standard, Fluency, Formal, Creative, Academic, and others) provide more rewrite control than Grammarly's single-mode approach
  • Grammar checker scores text across five categories: Grammar, Fluency, Clarity, Engagement, and Delivery
  • At $7.49/month billed annually, it costs roughly 38% less than Grammarly Pro

Key limitations:

  • Free tier caps paraphrasing at 125 words per input, making it impractical for longer documents
  • Grammar checking alone does not justify switching from Grammarly

Best for: Students and content writers who regularly rephrase source material or want fine-grained rewording control.

Pricing: Free with limits. Premium at $7.49/month (annual) or $14.95/month (monthly).

4. Hemingway Editor

Hemingway Editor focuses on readability over grammar rules, color-coding your writing by sentence complexity, passive voice usage, and adverb density.

Key strengths:

  • Readability scoring is immediate and visual, highlighting exactly which sentences are too dense or complex
  • Desktop app available as a one-time $19.99 purchase with no ongoing subscription
  • Hemingway Editor Plus adds AI-powered rewrites and an advanced grammar checker for $10/month

Key limitations:

  • No browser extension, so it works only inside the Hemingway web editor or desktop app
  • Lacks plagiarism checking, tone detection, and team features entirely

Best for: Bloggers, copywriters, and anyone whose primary goal is cutting through dense writing.

Pricing: Free online version for readability checks. Desktop app at $19.99 (one-time). Hemingway Editor Plus at $10/month or $100/year.

5. Wordtune

Wordtune rewrites sentences to be clearer, more formal, or more casual without losing your original meaning. Built by AI21 Labs, it focuses on sentence-level polish rather than document-wide grammar scanning.

Key strengths:

  • Structured rewrite suggestions (Explain, Emphasize, Counterargument, Give an Example) help develop ideas beyond simple error correction
  • Chrome extension works inside Google Docs, Gmail, Outlook, and LinkedIn
  • Unlimited rewrites on the $9.99/month plan with no daily caps

Key limitations:

  • Free tier allows only 10 rewrites per day and 3 summaries per month
  • No plagiarism checker or style guide enforcement

Best for: Professionals who polish emails, LinkedIn posts, and short-form content daily.

Pricing: Free with daily limits. Advanced at $6.99/month. Unlimited at $9.99/month.

6. Trinka AI

Trinka AI is built for academic and technical writing, with journal-specific style guide enforcement that no general-purpose grammar tool can match.

Key strengths:

  • Checks manuscripts against APA, AMA, IEEE, and other scientific journal style guides automatically
  • Preserves document formatting when proofreading Word files, so researchers skip the manual reformatting step
  • Holds enterprise security standards and security requirements certifications, making it a viable option for sensitive research data

Key limitations:

  • Free tier caps at 5,000 words per month, which is tight for anyone writing complete papers
  • Features are narrowly focused on academic writing; casual users will find it restrictive

Best for: Researchers, graduate students, and technical writers preparing journal submissions.

Pricing: Free at 5,000 words/month. Premium from about $6.67/month billed annually ($80/year).

7. Sapling AI

Sapling AI is a grammar and writing assistant designed for customer-facing teams, with native integrations into support and sales platforms.

Key strengths:

  • Plugs directly into Salesforce, Zendesk, Amazon Connect, and Twilio Flex for real-time grammar suggestions during live conversations
  • Shared snippet library lets teams maintain consistent response templates across their entire toolset
  • Sapling claims its AI catches 60% more language errors than competing grammar checkers

Key limitations:

  • Built for team workflows; individual writers get fewer features than Grammarly or ProWritingAid
  • Individual pricing is not prominently listed, with team subscriptions as the primary offering

Best for: Support and sales teams handling high message volumes who need grammar checking inside their CRM.

Pricing: Free tier available for individuals. Team pricing varies by organization size.

What to check before switching from Grammarly

Switching grammar tools is not just about accuracy numbers. Grammarly's real lock-in comes from how deeply it integrates into daily workflows. Before you commit to an alternative, verify these five areas.

Browser extensions

Grammarly's Chrome extension works across virtually every text field on the web. ProWritingAid, LanguageTool, QuillBot, and Wordtune all offer Chrome extensions with similar coverage. Hemingway and Sapling do not. If most of your writing happens in browser-based tools, a missing extension is a dealbreaker.

Tone detection

Grammarly detects whether your writing sounds formal, friendly, confident, or uncertain. Wordtune offers comparable tone-shifting with formal and casual rewrite modes. ProWritingAid provides writing style analysis through its report suite. LanguageTool and QuillBot focus more on grammar accuracy than tone.

Team style guides

Grammarly Pro now includes team style guides and brand tone enforcement. Sapling offers shared snippet libraries for customer-facing teams. ProWritingAid provides custom style rules in its team plans. The other tools on this list lack team-level style controls.

Plagiarism checking

Grammarly bundles plagiarism checking in its Pro plan. QuillBot and Trinka both include plagiarism checkers at their premium tiers. ProWritingAid offers plagiarism checking as a paid add-on. LanguageTool, Hemingway, and Wordtune do not include plagiarism detection.

Google Docs and Word integration

LanguageTool supports Google Docs, Word, and LibreOffice. ProWritingAid covers Google Docs, Word, and Scrivener. QuillBot works alongside Google Docs and Word through its browser extension. Hemingway requires copy-pasting into its own editor. Confirm that your chosen tool works where you actually write before committing to a subscription.

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Which alternative fits your writing

The right Grammarly alternative depends on what you write most often.

Fiction and long-form manuscripts go to ProWritingAid. Its 25+ analysis reports cover pacing, readability, and overused words at a level that Grammarly's surface suggestions cannot reach. The pacing report alone justifies the switch for anyone regularly editing beyond 10,000 words.

Multilingual writing goes to LanguageTool. Grammarly focuses almost entirely on English, while LanguageTool checks grammar across 30+ languages with real rule coverage.

Paraphrasing-heavy work goes to QuillBot. Its ten rewriting modes give students and content writers more control over sentence-level rewording than any other tool here.

Readability-focused editing goes to Hemingway. Its visual approach to sentence complexity works differently from standard grammar checking. Pair it with another tool for full coverage.

Short-form professional content goes to Wordtune. Email, LinkedIn posts, and quick business writing benefit from its sentence-level polish more than from Grammarly's broader document analysis.

Academic papers go to Trinka AI. Journal style guide enforcement, citation formatting, and technical term handling fill gaps that general tools leave wide open.

Customer support teams go to Sapling AI. Native CRM integrations put grammar checking where agents actually work, inside Salesforce or Zendesk rather than a separate browser tab.

For content teams producing articles at scale, pairing your grammar checker with a shared workspace keeps drafts, feedback, and published assets organized with version history and AI-powered search across your entire library.

Frequently Asked Questions

What is a free alternative to Grammarly?

LanguageTool is the strongest free alternative, supporting 30+ languages with browser extensions for Chrome, Firefox, and Edge. Its free tier catches most common grammar and style errors, though it limits document checks to 10,000 characters. QuillBot and Hemingway Editor also offer free tiers with tighter usage caps.

Is QuillBot better than Grammarly?

QuillBot is better for paraphrasing, with 10 rewriting modes compared to Grammarly's single approach. For raw grammar accuracy, Grammarly still leads. QuillBot costs about 38% less on an annual plan. Choose QuillBot if you primarily rephrase and rewrite text. Choose Grammarly if you need broad writing assistance across hundreds of apps.

What writing tool is better than Grammarly?

No single tool beats Grammarly across every category. ProWritingAid is deeper for long-form writing. LanguageTool covers more languages. Trinka AI handles academic style guides that Grammarly ignores. The best choice depends on what you write, your budget, and which integrations your daily workflow requires.

Is ProWritingAid a good Grammarly replacement?

ProWritingAid is the closest full replacement, covering grammar checking, style analysis, and plagiarism detection in one tool. It caught 91% of grammar errors in benchmark tests compared to Grammarly's 96%. ProWritingAid pulls ahead in long-form analysis with 25+ reports for pacing, readability, and overused words. Its interface is less polished and it lacks Grammarly's mobile app coverage.

How much does Grammarly Pro cost in 2026?

Grammarly Pro costs $12/month when billed annually ($144/year), $20/month on a quarterly plan, or $30/month for monthly billing. The Pro plan includes grammar checking, tone detection, plagiarism checking, AI-powered rewrites, and team features like shared style guides and brand tones.

Related Resources

Fastio features

Keep your writing workflow in one workspace

Fastio gives content teams generous storage with version history, granular sharing, and AI-powered document search. No credit card required.