Writing & Editing
Best AI Grammar Checker Tools in 2026: Free & Paid Picks
AI Grammar Checker is for cleaning up text before it is published, submitted, or sent. Use AI Grammar Checker to compare tools that improve correctness while preserving the writer's intended meaning.
74Total AI Grammar Checker Tools3Most Relevant AI Grammar Checker Tools18Free AI Grammar Checker ToolsAI Grammar Checker Tools updated Jun 18, 2026
Top tools
Top 10 AI Grammar Checker Tools
Explore top AI Grammar Checker Tools ranked by category fit, free access, AI-powered features, traffic, and pricing context.
Free plan
Gr
Grammarly
AI writing assistant for error-free, clear, and impactful communication.
Real-time spelling, punctuation, and grammar checkerTone detector and full-sentence rewrite suggestionsPlagiarism checker and auto-citation generatorIntegrated AI detector to analyze writing text+2
Free plan
Qu
Quillbot Paraphraser
AI-powered writing platform featuring paraphrasing, grammar checking, and text optimization tools.
AI Paraphrasing tool with multiple writing modesAdvanced Grammar Checker, Spell Checker, and Essay CheckerPlagiarism Checker supporting over 100 languagesAI Detector to analyze and identify AI-generated content+3
Paid
Ze
ZeroGPT
An online AI detection tool to verify content originality and identify machine-generated text.
AI text detection with sentence-level highlighting and percentage indicatorsDeepAnalyse™ multi-stage methodology to evaluate content originSupport for multiple languagesBatch file uploading and automated dashboard checks+3
Paid
Gp
Gptzero me
Advanced AI detector and checker for identifying machine-generated text.
Multi-model AI detection (ChatGPT, GPT-4, Gemini, Claude, LLaMa)Sentence-level AI highlighting and vocabulary analysisPlagiarism checker and source verificationWriting reports with video replay for authorship verification+2
Free plans
Best Free AI Grammar Checker Tools
Start with free AI grammar checker tools that cover practical website workflows, core features, and AI-powered output quality.
| Tool | Plan status | Pricing | Traffic | Feature preview | Website |
|---|---|---|---|---|---|
| Grammarly | Free option | Free, Pro from $12/member/mo | 54M/mo | Real-time spelling, punctuation, and grammar checker, Tone detector and full-sentence rewrite suggestions | Visit |
| Quillbot Paraphraser | Free option | Free, Premium from $8.33/mo | 45M/mo | AI Paraphrasing tool with multiple writing modes, Advanced Grammar Checker, Spell Checker, and Essay Checker | Visit |
| Sider | Free option | Free, Basic from $8.30/mo | 3.5M/mo | All-in-one AI chatbot integrating GPT-4.1, Claude 3.5, and Gemini 2.5, Group AI Chat to compare answers from multiple bots simultaneously | Visit |
| Decopy AI | Free option | Free | 1.8M/mo | AI Content Detector with 99% accuracy across models like ChatGPT, GPT-4, and Claude, AI Humanizer to transform robotic AI text into smooth, natural human expression | Visit |
| ProWritingAid | Free option | Free, Premium from $10/mo | 1.5M/mo | In-depth grammar, spelling, and punctuation checker, Over 25 specialized writing analysis reports for pacing, structure, and sensory details | Visit |
| Trancy | Free option | Free, Premium from $2.33/mo | 737K/mo | YouTube and Netflix AI bilingual subtitles with dual viewing modes (theater and reading), Immersive webpage AI text selection translation supporting multi-language full-text contrast | Visit |
| Type AI | Free option | Free, Pro from $12/mo | 429K/mo | Powered by leading AI models including OpenAI's GPT-4o and Anthropic's Claude 3.7 Sonnet, Inline AI word generator that creates sentences, lists, and paragraphs directly at your cursor via a '/' command | Visit |
| Yoodli AI Speech Coach | Free option | Free, Pro from $8/mo | 324K/mo | Private, real-time speech coaching and in-the-moment nudges during live calls, Comprehensive analytics on visual, verbal, and vocal delivery (filler words, pacing, and monologues) | Visit |
| Kroolo | Free option | Free Trial available, dynamic tiers on upgrade | 124K/mo | AI WorkOS with 40+ custom AI agents for automated tracking, hiring, and operations, Instant AI project board creation via simple text prompts or voice commands | Visit |
| Think in Italian AI Language Tutor | Free option | Free, Starter from $9.80/mo | 67K/mo | 250 speech-focused audio lessons designed to teach grammar and sentence patterns intuitively, Over 1,200 bilingual readings with audio and dual-language transcripts for contextual learning | Visit |
Traffic
Most visited AI Grammar Checker Tools
Use traffic, free-plan status, and starting price to compare the most visited tools in this category.
| Tool | Traffic | Free plan | Starting price | Website |
|---|---|---|---|---|
| Grammarly | 54M/mo | Yes | Free, Pro from $12/member/mo | Visit |
| Quillbot Paraphraser | 45M/mo | Yes | Free, Premium from $8.33/mo | Visit |
| ZeroGPT | 26M/mo | No | Free, Pro from $7.99/mo | Visit |
| Gptzero me | 17M/mo | No | Free, Essential from $8.33/mo | Visit |
| LanguageTool | 7.6M/mo | No | Free, Premium from SGD 4.99/mo | Visit |
| Scribbr | 7.3M/mo | No | Free basic tools, premium services vary by document length and deadline | Visit |
| Sider | 3.5M/mo | Yes | Free, Basic from $8.30/mo | Visit |
| Originality | 2.4M/mo | No | Pay as you go from $30, Pro from $12.95/mo | Visit |
Browse all tools
Top AI Grammar Checker Tools Comparison
Browse all AI Grammar Checker Tools in this category with search, free-plan filtering, sorting, website signals, pricing, and AI-powered feature context.
| Tool | Free | Pricing | Traffic | Features | Website |
|---|---|---|---|---|---|
| Originality | No | Pay as you go from $30, Pro from $12.95/mo | 2.4M/mo | Patented AI content detector with 99%+ accuracy on modern LLMs like GPT-4o and Claude 3, Advanced paraphrase detection capable of identifying text rewritten by tools like Quillbot | Visit |
| Decopy AI | Yes | Free | 1.8M/mo | AI Content Detector with 99% accuracy across models like ChatGPT, GPT-4, and Claude, AI Humanizer to transform robotic AI text into smooth, natural human expression | Visit |
| Paperpal | No | Free tier available, upgrade to Prime for full access | 1.5M/mo | Academic-focused Grammar Checker and Paraphraser, Generative AI Copilot and AI Essay Writer | Visit |
| Sider | Yes | Free, Basic from $8.30/mo | 3.5M/mo | All-in-one AI chatbot integrating GPT-4.1, Claude 3.5, and Gemini 2.5, Group AI Chat to compare answers from multiple bots simultaneously | Visit |
| Prepostseo | No | Free, Premium plans available | 1.1M/mo | Over 150 free online tools categorized for easy navigation, Writing and education assistants including plagiarism checking, paraphrasing, and summarizing | Visit |
| Gptzero me | No | Free, Essential from $8.33/mo | 17M/mo | Multi-model AI detection (ChatGPT, GPT-4, Gemini, Claude, LLaMa), Sentence-level AI highlighting and vocabulary analysis | Visit |
| bartleby | No | First week for $6.95, then $19.95/mo | 758K/mo | Step-by-step textbook solutions across major college and high school subjects, 24/7 expert Q&A with typical response times under 40 minutes | Visit |
| Trancy | Yes | Free, Premium from $2.33/mo | 737K/mo | YouTube and Netflix AI bilingual subtitles with dual viewing modes (theater and reading), Immersive webpage AI text selection translation supporting multi-language full-text contrast | Visit |
| Quetext | No | Free, Essential from $8.80/mo | 451K/mo | DeepSearch™ plagiarism checker technology, AI content detector with line-by-line analysis | Visit |
| PTE APEUni | No | Free platform with premium features available | 2.1M/mo | AI Scoring Engine for instant speaking pronunciation and fluency evaluation, Comprehensive practice modules for all PTE Speaking, Writing, Reading, and Listening question types | Visit |
| editGPT | No | Free, Pro from $10/mo | 319K/mo | Track changes interface to view, accept, and reject individual edits, Import and export capabilities for Microsoft Word documents with tracked changes preserved | Visit |
| Plagiarismcheck.org | No | Free, Individual plans from $2.99/mo | 466K/mo | Advanced similarity detection for exact matches, structural rearrangements, and synonym substitutions, TraceGPT AI detector to identify machine-generated text (including ChatGPT) | Visit |
| flAI | No | Trial lesson at $5, Packages from $11/lesson | 432K/mo | One-on-One Online Lessons with native English tutors, Smart Matching Algorithm to pair students with the most suitable tutors | Visit |
| Type AI | Yes | Free, Pro from $12/mo | 429K/mo | Powered by leading AI models including OpenAI's GPT-4o and Anthropic's Claude 3.7 Sonnet, Inline AI word generator that creates sentences, lists, and paragraphs directly at your cursor via a '/' command | Visit |
| packback.co | No | Contact for Pricing | 205K/mo | Packback Questions: An award-winning student discussion platform that uses AI coaching to foster curiosity and community., Packback Deep Dives: An AI-powered writing feedback platform providing instant coaching for essays and streamlining grading via customized rubrics. | Visit |
| Yoodli AI Speech Coach | Yes | Free, Pro from $8/mo | 324K/mo | Private, real-time speech coaching and in-the-moment nudges during live calls, Comprehensive analytics on visual, verbal, and vocal delivery (filler words, pacing, and monologues) | Visit |
| Parafrasear Textos | No | Free, Premium plans from €3/week | 247K/mo | Eight distinct paraphrasing modes to match simple, academic, or creative writing styles, Humanizer option to refine robotic tones into natural, human-sounding content | Visit |
| Tenorshare AI Chat PDF Tool | No | Free, premium upgrades available | 166K/mo | AI Bypass & Humanizer: Converts AI text into natural, human-like writing that bypasses detectors with 99% accuracy., 120+ Free AI Writing Tools: Features personalized content generators for social media, marketing, emails, and song lyrics. | Visit |
| reescribirtextos.net | No | Free, Premium plans from €3/week | 191K/mo | AI paraphrasing with multiple writing modes including Simple, Formal, Academic, and Intelligent, Plagiarism removal and automated text rewriting | Visit |
| Plagiarism Remover | No | Free, Weekly from $6.5, Monthly from $20/mo | 130K/mo | Four processing modes: Plagiarism Remover, Word Changer, Formal, and Shorten, Advanced AI and NLP algorithms for human-level text restructuring | Visit |
Showing 21-40 of 74 AI Grammar Checker Tools matchesBrowse more tools in this category.