Scribbr Plagiarism Checker vs Grammarly vs QuillBot vs GPTZero

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

Your tool
Scribbr Plagiarism Checker
vs
Competitor 1
Grammarly
Competitor 2
QuillBot
Competitor 3
GPTZero
Compare
4 tools · best value per row highlighted
Your tool Scribbr Plagiarism Checker
scribbr.com
Scribbr Plagiarism Checker compares a document with a database of 99 billion web pages and 8 million publications and shows where the text matches existing sources.
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Competitor Grammarly
grammarly.com
Writing confidence that follows you everywhere
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Competitor 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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Traffic estimated monthly website traffic
Monthly visits
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49.3Mvisits/mo
31.4Mvisits/mo
11Mvisits/mo
MoM change
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▲ 10.8%
▼ 8.4%
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6-month growth
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-22.5%
-27.9%
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Global rank web
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#688
#1,318
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Avg. last 3 months
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46.5M
36.7M
11M
Bounce rate lower is better
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40%
46%
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Pages / visit
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7.8
5.5
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Visit duration
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4m 41s
2m 52s
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Traffic sources
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● Direct 85% · ● Referral 9%
● Direct 76% · ● Referral 22%
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Scribbr Plagiarism CheckerGrammarlyQuillBotGPTZero
015.9M31.8M47.7M63.6MGrammarly · 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 · 31.4MGPTZero · 11M10M100MGrammarly · 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 · 31.4MGPTZero · 11MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Freemium
Starting price
Free
$12per month · free tier available
$19.95per month · free tier available
$12.99per month · free tier available
Free tier
Free trial
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API access
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Plans
Free check Free
Free FreePro Custom/moEnterprise Custom/mo
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Free FreePremium $12.99/moProfessional $24.99/mo
Capabilities input → output
Input
DocumentsText
Text
DocumentsImagesText
DocumentsText
Output
Documents
Text
DocumentsImagesSlidesText
DataText
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+1 more
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
AI Detection & SafetyAI DetectorAI Plagiarism Checker
Tasks what each tool can do · 3 shared · core   partial
Tasks covered
5
6
9
7
Plagiarism detection
Grammar checking
Detection
Paraphrasing
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Writing
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AI authorship detection
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Proofreading
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Content detection
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Hallucination detection
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Summarizing
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Academic citation
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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
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 2
▲ 1
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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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.