Best AI Tools for Grammar Check in 2026
Grammar check helps teams polish meeting notes, document drafts, task lists, and review comments into practical review notes.
Top Grammar Check AI tool recommendations
These Grammar Check AI tools are ranked by Grammar Check fit score first, with free access and latest usage signals as secondary checks.
Grammarly is primarily known and widely used as an advanced real-time grammar checking tool.
The platform functions directly as an integrated grammar checker to fix text errors.
The tool is explicitly described as a comprehensive online grammar checker and style editor.
Best Free Grammar Check AI Tools
Start with free Grammar Check AI tools that cover practical Grammar Check workflows before comparing paid pricing plans.
| Tool | Fit | Free status | Pricing | Why it fits | Website |
|---|---|---|---|---|---|
| Grammarly | 100 | Free option | Free, Pro from $12/member/mo | Grammarly is primarily known and widely used as an advanced real-time grammar checking tool. | Visit |
| Quillbot Paraphraser | 98 | Free option | Free, Premium from $8.33/mo | The platform functions directly as an integrated grammar checker to fix text errors. | Visit |
| ProWritingAid | 98 | Free option | Free, Premium from $10/mo | The tool is explicitly described as a comprehensive online grammar checker and style editor. | Visit |
| Corrector App | 98 | Free option | Free | The tool functions as a comprehensive online grammar checker to eliminate grammatical errors across multiple languages. | Visit |
| Paraphraser.io | 95 | Free option | Free, Lite from $9/wk or Silver from $23/mo | Includes an integrated Grammar Checker to detect spelling, punctuation, syntax, and grammatical errors. | Visit |
| Kreativespace | 95 | Free option | Free | A grammar checker is provided to quickly find and fix grammar, spelling, and punctuation errors. | Visit |
| Voilà - ChatGPT browser assistant | 90 | Free option | Free, Premium from $6/mo | It includes built-in language tools specifically designed to fix spelling and grammar errors. | Visit |
| Rytr | 90 | Free option | Free, Unlimited from $7.50/mo | The software includes a built-in grammar checker and text improver to refine content clarity. | Visit |
| Ddict | 90 | Free option | Free, Premium from $0.99/mo | The writing assistant feature explicitly includes grammar feedback to ensure polished communication. | Visit |
| Sider | 85 | Free option | Free, Basic from $8.30/mo | The website explicitly lists a grammar checker and writing improver among its reading and writing products. | Visit |
Compare pricing for Grammar Check AI tools
Compare plan names, prices, and short pricing notes for the top Grammar Check AI tools before opening each official website.
| Tool | Fit | Pricing plans | Website |
|---|---|---|---|
GrammarlyFree option | 100 | Free$0 USD / month Write without spelling and grammar mistakes, see your writing tone, and generate text with 100 AI prompts per month. Pro$12 USD / member / month Billed annually ($30 when billed monthly). Everything in Free, plus full-sentence rewrites, tone adjustments, plagiarism detection, and 2,000 AI prompts per member/month. EnterpriseContact Sales Drive results across your organization with unlimited AI prompts, dedicated support, BYOK encryption, SSO, SCIM, and data loss prevention. | Visit |
Quillbot ParaphraserFree option | 98 | Free$0 USD per month Includes a 125-word paraphrase limit, 2 built-in modes, basic grammar checking, basic text humanizing, a 1,200-word summary limit, and 1,200 words of AI detection. Premium$8.33 USD per month Billed annually. Includes unlimited text paraphrasing, 9 unique writing modes, custom modes, premium grammar recommendations, unlimited AI detection, unlimited advanced humanizing, 6,000-word summaries, and a 25,000 word/month Plagiarism Checker. | Visit |
ProWritingAidFree option | 98 | Free$0 Basic writing suggestions everywhere you write. Limited to a 500 word count limit, 2 runs per report per day, 10 rephrases per day, and 3 Sparks per day. Premium (Monthly)$30.00 per month Billed monthly. Includes unlimited word count, unlimited report runs, unlimited rephrases, 5 Sparks per day, 25+ writing reports, and 1 Chapter Critique per day. Premium (Yearly)$10.00 per month Billed yearly at $120. Includes all Premium features, a 3-day money-back guarantee, and a 30% discount on Manuscript Analysis Credits. Premium Pro (Monthly)$36.00 per month Billed monthly. Unlocks extended AI features including everything in Premium plus 50 Sparks per day, 3 Chapter Critiques per day, and a 50% discount on Manuscript Analysis Credits. Premium Pro (Yearly)$12.00 per month Billed yearly at $144. Unlocks all Premium Pro extended AI features with a 3-day money-back guarantee. Premium (Lifetime)$399.00 one-time payment One-time payment for lifetime access to all Premium tier features with no recurring fees and a 3-day money-back guarantee. Premium Pro (Lifetime)$699.00 one-time payment One-time payment for lifetime access to all Premium Pro extended AI features with no recurring fees and a 3-day money-back guarantee. | Visit |
Paraphraser.ioFree option | 95 | Lite (Weekly)$9.00 7 days validity. 18,000 words allowed total with a 1,500-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, chat support, and no ads/recaptcha. Standard (Weekly)$15.00 7 days validity. 36,000 words allowed total with a 1,500-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, chat support, and no ads/recaptcha. Silver (Monthly)$23.00 30 days validity. 46,000 words allowed total with a 2,000-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, chat support, and no ads/recaptcha. Gold (Monthly)$40.00 30 days validity. 92,000 words allowed total with a 2,000-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, chat support, and no ads/recaptcha. Diamond (Monthly)$499.00 30 days validity. 1.2 million words allowed total with a 5,000-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, API access, chat support, a dedicated account manager, and no ads/recaptcha. Platinum (Yearly)$165.00 365 days validity. 330,000 words allowed total with a 3,000-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, API access, chat support, and no ads/recaptcha. Enterprise (Yearly)$999.00 365 days validity. 3 million words allowed total with a 10,000-word paraphrase limit per submission. Includes 3 premium modes, dashboard access, API access, chat support, a dedicated account manager, and no ads/recaptcha. CustomContact for Pricing Tailored enterprise solutions for custom specifications. Contact the support team directly for details. | Visit |
Voilà - ChatGPT browser assistantFree option | 90 | Free Plan$0 Includes 250 free requests, summarization, and chat with webpages. No credit card required. Premium (Monthly Billing)$8 per month Includes 3,000 requests/month, auto AI model (GPT-4.1 / 4.1 mini), web access, summarization, chat with webpages and YouTube videos, and image generation. Premium (Annual Billing)$6 per month Includes all Premium plan features billed annually. Ultimate (Monthly Billing)$16 per month Regular price $24/mo. Includes unlimited requests (fair usage applies), GPT-4.1 / 4.1 mini models, chat with documents and images, early access to new features, and desktop/mobile apps. Ultimate (Annual Billing)$14 per month Regular price $18/mo. Includes all Ultimate plan features billed annually. Voilà for Teams$16 per seat/month Includes unlimited requests, shared workflows and prompts, team collaboration features, and privacy/data security compliance. | Visit |
RytrFree option | 90 | Free Plan$0 per month Generate up to 10k characters per month, access 40+ use cases, write in 20+ tones, and use the Chrome extension. Unlimited Plan$9 per month Generate unlimited characters, build 1 custom tone of voice, and perform 50 plagiarism checks per month. (Discounted to $7.50/mo when billed annually) Premium Plan$29 per month Generate unlimited characters, build up to 5 custom tones, write in 40+ languages, access increased character inputs, and perform 100 plagiarism checks per month. (Discounted to $24.16/mo when billed annually) | Visit |
DdictFree option | 90 | Ddict Free$0 Free forever. Includes basic functionality, basic AI model, and limited advanced AI model features. Ddict Premium$0.99 for the first month, then $3.99/month Advanced capabilities for individuals. Includes the Advanced AI Model and premium features such as Summarization, Writing Improvement, and Grammar & Spelling Check. Ddict BusinessContact for Pricing Tailored for teams. Includes all Premium features plus additional operational capabilities like unlocked rate limits. | Visit |
SiderFree option | 85 | FreeFree 30 Basic Credits/day, 5 YouTube summaries total, 10 Painter total, and 10 PDFs/File/Link chats total. Basic$8.30 per month Billed at $100/year. Includes 3,600 Basic Credits/month and 200 Advanced Credits/month. Supports 4 logged-in devices. Pro$16.60 per month Billed at $199/year. Includes 12,000 Basic Credits/month and 400 Advanced Credits/month. Supports 6 logged-in devices. Unlimited$25.00 per month Billed at $300/year. Includes Unlimited Basic Credits/month and Unlimited Advanced Credits/month (fair use terms apply). Supports 8 logged-in devices. | Visit |
Latest Grammar Check AI tool overview
Rank the best online AI tools for Grammar Check by free access, pricing, Grammar Check task fit score, and the practical reason each tool belongs on this page.
| Tool | Free | Starting price | Task fit score | Why it fits | Visit |
|---|---|---|---|---|---|
| HyHyperWrite AI | No | Free, Premium from $16/mo | 85 | Includes a Magic Editor to improve clarity, tone, and overall quality of text. | Visit |
| TwTwee | No | Free, Basic from $6.50/mo | 85 | Twee offers specialized tools to create grammar worksheets and fill-in-the-gap exercises for learners. | Visit |
| PaParafrasear Textos | No | Free, Premium plans from €3/week | 85 | The platform includes a built-in spelling and grammar checking system to correct errors in text. | Visit |
| rerewriteguru.com | No | Free, Basic from $5.55/week | 85 | It includes grammar check functionality to improve text accuracy and correct errors. | Visit |
| QuQuizbot.ai | No | Standard Plan from $9.5/mo, Pro Plan from $19.0/mo | 85 | The platform features integrated grammar correction tools to refine text and ensure high-quality content. | Visit |
| YoYomu AI | No | Starts at $9, Pro from $19/mo | 85 | The application includes built-in grammar and text improvement checkers for flawless writing results. | Visit |
| MaMagickPen | No | Free, Basic from $6.9/mo | 85 | The website explicitly lists a built-in grammar check function among its main editing capabilities. | Visit |
| ApApyHub AI APIs | No | Free, Pro from €15/mo | 85 | The platform includes a dedicated Proofread Text and Grammar Check API for text polishing. | Visit |
| AIAI Perfect Assistant - GPT for Office365 | Yes | Free, Premium from $5/mo or $99.99/yr | 85 | Assists users in fixing writing mistakes and polishing grammar within Microsoft Word. | Visit |
| UsUseResume AI | Yes | Free, Premium plans from $9/week | 85 | It provides an integrated spelling and grammar checker to ensure error-free documents. | Visit |
| VoVoiceDash | Yes | Free, Pro from $12/mo | 85 | The built-in smart text editing features automatically remove filler words and fix grammatical errors in real time. | Visit |
| DeDesklib | No | Free, Basic Plan from $4.50/mo | 85 | The AI Grader and Code Checker features review student assignments for grammar and structural accuracy. | Visit |
AI tool categories that work for Grammar Check
See which AI tool categories appear most often in the strongest Grammar Check matches.
| Category | Matching tools | Free plans | Average fit | Top tool |
|---|---|---|---|---|
| AI Writing Assistants | 43 | 15 | 89 | |
| AI Grammar Checker | 35 | 9 | 90 | |
| AI Paraphraser | 30 | 5 | 88 | |
| AI Rewriter | 21 | 4 | 88 | |
| AI Plagiarism Checker | 21 | 1 | 87 | |
| AI Writing | 20 | 5 | 91 |
Popular tools with strong fit for Grammar Check
Compare usage signals with fit score so popular Grammar Check tools do not outrank better workflow matches by traffic alone.
| Tool | Traffic signal | Fit | Price | Why it belongs |
|---|---|---|---|---|
| Grammarly | 54M/mo | 100 | Free, Pro from $12/member/mo | Grammarly is primarily known and widely used as an advanced real-time grammar checking tool. |
| Quillbot Paraphraser | 45M/mo | 98 | Free, Premium from $8.33/mo | The platform functions directly as an integrated grammar checker to fix text errors. |
| LanguageTool | 7.6M/mo | 100 | Free, Premium from SGD 4.99/mo | The tool functions as an AI-powered grammar checker that fixes grammatical mistakes and errors across multiple languages. |
| Scribbr | 7.3M/mo | 100 | Free basic tools, premium services vary by document length and deadline | The platform includes an advanced grammar checker to check text fragments for errors. |
| Sider | 3.5M/mo | 85 | Free, Basic from $8.30/mo | The website explicitly lists a grammar checker and writing improver among its reading and writing products. |
| ProWritingAid | 1.5M/mo | 98 | Free, Premium from $10/mo | The tool is explicitly described as a comprehensive online grammar checker and style editor. |
| Paraphraser.io | 730K/mo | 95 | Free, Lite from $9/wk or Silver from $23/mo | Includes an integrated Grammar Checker to detect spelling, punctuation, syntax, and grammatical errors. |
| Linguix | 278K/mo | 100 | Free, Monthly from $15.00/mo | Linguix is explicitly described as a grammar checker and AI writing app that fixes errors in real time. |
Grammar Check FAQ
Compare the latest ranked AI tools for Grammar Check
Review top free and paid online AI-powered tools for Grammar Check, pricing signals, and fit scores before choosing a Grammar Check workflow.