QuillBot vs GPTZero vs Grammarly vs StealthGPT

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

Your tool
QuillBot
vs
Competitor 1
GPTZero
Competitor 2
Grammarly
Competitor 3
StealthGPT
Compare
4 tools · best value per row highlighted
Your tool QuillBot
quillbot.com
Rephrase until it sounds right
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Competitor GPTZero
gptzero.me
Used by over 10 million teachers and students across more than 100 countries, GPTZero detects AI-generated text across major language models while providing a suite of writing verification tools
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Competitor Grammarly
grammarly.com
Writing confidence that follows you everywhere
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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
31.4Mvisits/mo
11Mvisits/mo
49.3Mvisits/mo
—
MoM change
▼ 8.4%
—
▲ 10.8%
—
6-month growth
-27.9%
—
-22.5%
—
Global rank web
#1,318
—
#688
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Avg. last 3 months
36.7M
11M
46.5M
—
Bounce rate lower is better
46%
—
40%
—
Pages / visit
5.5
—
7.8
—
Visit duration
2m 52s
—
4m 41s
—
Traffic sources
● Direct 76% · ● Referral 22%
—
● Direct 85% · ● Referral 9%
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QuillBotGPTZeroGrammarlyStealthGPT
015.9M31.8M47.7M63.6MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MGPTZero · 11MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3M10M100MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MGPTZero · 11MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
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Starting price
$19.95per month · free tier available
$12.99per month · free tier available
$12per month · free tier available
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Free tier
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Free trial
–
–
–
API access
–
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Plans
—
Free FreePremium $12.99/moProfessional $24.99/mo
Free FreePro Custom/moEnterprise Custom/mo
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Capabilities input → output
Input
DocumentsImagesText
DocumentsText
Text
Text
Output
DocumentsImagesSlidesText
DataText
Text
Text
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
AI Detection & SafetyAI DetectorAI Plagiarism Checker
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
AI Detection & SafetyAI DetectorHumanizer AI
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
7
6
0
Plagiarism detection
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Detection
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Grammar checking
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Paraphrasing
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–
Writing
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Proofreading
–
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AI authorship detection
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–
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Content detection
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–
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Hallucination detection
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–
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Summarizing
–
–
–
Content authenticity verification
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–
–
Document summarization
–
–
–
Undetectable content writing
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 2
▲ 1
▲ 1
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
–
–
–
–

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.