GPTZero vs Grammarly vs QuillBot

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

Your tool
GPTZero
vs
Competitor 1
Grammarly
Competitor 2
QuillBot
Competitor 3
Suggested competitors for GPTZero: Originality.AI88% Winston AI85% Copyleaks84% ZeroGPT78% Turnitin74% Dechecker AI72% ZeroGPT Plus70% Detecting-AI.com70%
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3 tools · best value per row highlighted
Your tool 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
Make main Remove
Competitor QuillBot
quillbot.com
Rephrase until it sounds right
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Traffic estimated monthly website traffic
Monthly visits
11Mvisits/mo
49.3Mvisits/mo
31.4Mvisits/mo
MoM change
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▲ 10.8%
▼ 8.4%
6-month growth
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-22.5%
-27.9%
Global rank web
—
#688
#1,318
Avg. last 3 months
11M
46.5M
36.7M
Bounce rate lower is better
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40%
46%
Pages / visit
—
7.8
5.5
Visit duration
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4m 41s
2m 52s
Traffic sources
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● Direct 85% · ● Referral 9%
● Direct 76% · ● Referral 22%
GPTZeroGrammarlyQuillBot
015.9M31.8M47.7M63.6MGPTZero · 11MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4M10M100MGPTZero · 11MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Starting price
$12.99per month · free tier available
$12per month · free tier available
$19.95per month · free tier available
Free tier
Free trial
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–
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
DocumentsText
Text
DocumentsImagesText
Output
DataText
Text
DocumentsImagesSlidesText
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyAI DetectorAI Plagiarism Checker
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
Tasks what each tool can do · 3 shared · core   partial
Tasks covered
7
6
9
Detection
Grammar checking
Plagiarism detection
Paraphrasing
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Writing
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Proofreading
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AI authorship detection
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–
Content detection
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Hallucination detection
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Summarizing
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Content authenticity verification
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Document summarization
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Undetectable content writing
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–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 1
▲ 2
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
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.