Grammarly vs LanguageTool vs Copyleaks vs StealthGPT

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Grammarly
vs
Competitor 1
LanguageTool
Competitor 2
Copyleaks
Competitor 3
StealthGPT
Compare
4 tools · best value per row highlighted
Your tool Grammarly
grammarly.com
Writing confidence that follows you everywhere
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Competitor LanguageTool
languagetool.org
LanguageTool checks grammar, spelling, punctuation, casing and style as you write, and works in more than 30 languages and dialects, including English, German, Portuguese, Spanish, French and Dutch.
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Competitor Copyleaks
copyleaks.com
Copyleaks is a content authenticity platform that checks whether text was written by AI and whether it copies existing sources.
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Competitor StealthGPT
stealthgpt.ai
StealthGPT is an AI humanizer and writing assistant that rewrites generated text so it reads naturally and avoids detector flags.
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Traffic estimated monthly website traffic
Monthly visits
49.3Mvisits/mo
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MoM change
▲ 10.8%
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6-month growth
-22.5%
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Global rank web
#688
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Avg. last 3 months
46.5M
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Bounce rate lower is better
40%
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Pages / visit
7.8
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Visit duration
4m 41s
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Traffic sources
● Direct 85% · ● Referral 9%
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GrammarlyLanguageToolCopyleaksStealthGPT
015.9M31.8M47.7M63.6MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3M10M100MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
Paid
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Starting price
$12per month · free tier available
Free
$13.99per month
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Free tier
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Free trial
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API access
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Plans
Free FreePro Custom/moEnterprise Custom/mo
Free Free
Personal $13.99/moPro $74.99/moEnterprise CustomEducation Custom
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Capabilities input → output
Input
Text
Text
CodeDocumentsImagesTextVideo
Text
Output
Text
Text
Data
Text
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
Writing & ContentAI Grammar CheckerAI RewriterAI Writing Assistants
AI Detection & SafetyAI DetectorAI Image DetectorAI Plagiarism Checker
AI Detection & SafetyAI DetectorHumanizer AI
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
6
10
10
9
Grammar checking
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Paraphrasing
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Writing
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Detection
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Plagiarism detection
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Proofreading
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Content detection
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AI authorship detection
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Humanizing AI text
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Text humanization
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Undetectable content writing
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Bypassing AI content detection
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Content authenticity verification
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Multilingual grammar assistance
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APIs
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Citation formatting
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Content moderation
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Deepfake detection
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Dutch text correction
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French grammar checking
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French text correction
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Image authenticity analysis
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Multilingual writing assistance
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Spanish text correction
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
▲ 0
Saves
0
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Reviews
0
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Prompts
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.