QuillBot vs Scribbr Plagiarism Checker vs Undetectable AI

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

Your tool
QuillBot
vs
Competitor 1
Scribbr Plagiarism Checker
Competitor 2
Undetectable AI
Competitor 3
Suggested competitors for QuillBot: Grammarly92% Wordtune88% GPTZero86% Originality.AI84% StealthGPT82% LanguageTool82% WriteHuman82% Paraphraser.io82%
Compare
3 tools · best value per row highlighted
Your tool QuillBot
quillbot.com
Rephrase until it sounds right
Remove
Competitor 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.
Make main Remove
Competitor Undetectable AI
undetectable.ai
Undetectable AI bundles an AI text detector, an AI humanizer and an AI image detector into one account.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
31.4Mvisits/mo
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MoM change
▼ 8.4%
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6-month growth
-27.9%
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Global rank web
#1,318
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Avg. last 3 months
36.7M
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Bounce rate lower is better
46%
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Pages / visit
5.5
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Visit duration
2m 52s
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Traffic sources
● Direct 76% · ● Referral 22%
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QuillBotScribbr Plagiarism CheckerUndetectable AI
014.9M29.9M44.8M59.8MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4M10M100MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Free
Paid
Starting price
$19.95per month · free tier available
Free
$5per month
Free tier
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Free trial
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API access
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Plans
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Free check Free
10K words $5/mo20K words $9.50/mo35K words $15.75/mo50K words $21.25/mo+1 more
Capabilities input → output
Input
DocumentsImagesText
DocumentsText
DocumentsImagesText
Output
DocumentsImagesSlidesText
Documents
DataText
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+1 more
AI Detection & SafetyAI DetectorAI Image DetectorHumanizer AI
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
2
3
Detection
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Plagiarism detection
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Grammar checking
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Paraphrasing
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Image authenticity analysis
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Summarizing
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Writing
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Audio detection
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Document summarization
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Proofreading
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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
▲ 2
▲ 0
▲ 0
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.