Grammarly vs LanguageTool vs ProWritingAid 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
ProWritingAid
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 ProWritingAid
prowritingaid.com
ProWritingAid is a writing toolkit built around the full path of a book, from first idea to publication.
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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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GrammarlyLanguageToolProWritingAidStealthGPT
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
Freemium
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Starting price
$12per month · free tier available
Free
€10per month · free tier available
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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
Free FreePremium €30/moPremium Pro €36/mo
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Capabilities input → output
Input
Text
Text
Text
Text
Output
Text
Text
Text
Text
Skill level
Beginner-friendly
Beginner-friendly
Intermediate
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
Writing & ContentAI Grammar CheckerAI RewriterAI Writing Assistants
Writing & ContentAI Book WritingAI Grammar CheckerAI Writing Assistants
AI Detection & SafetyAI DetectorHumanizer AI
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
6
10
11
9
Paraphrasing
Writing
Grammar checking
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Proofreading
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Plagiarism detection
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Detection
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Book writing
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Humanizing AI text
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Text humanization
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Undetectable content writing
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Book creation assistance
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Book editing
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Bypassing AI content detection
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Content critique
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Multilingual grammar assistance
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Writing outlines
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Citation formatting
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Content 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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Multilingual writing assistance
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Novels
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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
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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.