Copyleaks vs GPTZero vs QuillBot vs Undetectable AI

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

Your tool
Copyleaks
vs
Competitor 1
GPTZero
Competitor 2
QuillBot
Competitor 3
Undetectable AI
Compare
4 tools · best value per row highlighted
Your tool Copyleaks
copyleaks.com
Copyleaks is a content authenticity platform that checks whether text was written by AI and whether it copies existing sources.
Remove
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
Make main Remove
Competitor QuillBot
quillbot.com
Rephrase until it sounds right
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
—
11Mvisits/mo
31.4Mvisits/mo
—
MoM change
—
—
▼ 8.4%
—
6-month growth
—
—
-27.9%
—
Global rank web
—
—
#1,318
—
Avg. last 3 months
—
11M
36.7M
—
Bounce rate lower is better
—
—
46%
—
Pages / visit
—
—
5.5
—
Visit duration
—
—
2m 52s
—
Traffic sources
—
—
● Direct 76% · ● Referral 22%
—
CopyleaksGPTZeroQuillBotUndetectable AI
014.9M29.9M44.8M59.8MGPTZero · 11MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4M10M100MGPTZero · 11MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Freemium
Freemium
Paid
Starting price
$13.99per month
$12.99per month · free tier available
$19.95per month · free tier available
$5per month
Free tier
–
–
Free trial
–
–
–
API access
–
Plans
Personal $13.99/moPro $74.99/moEnterprise CustomEducation Custom
Free FreePremium $12.99/moProfessional $24.99/mo
—
10K words $5/mo20K words $9.50/mo35K words $15.75/mo50K words $21.25/mo+1 more
Capabilities input → output
Input
CodeVideoTextImagesDocuments
TextDocuments
DocumentsTextImages
TextImagesDocuments
Output
Data
TextData
TextSlidesImagesDocuments
TextData
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyAI DetectorAI Image DetectorAI Plagiarism Checker
AI Detection & SafetyAI DetectorAI Plagiarism Checker
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
AI Detection & SafetyAI DetectorAI Image DetectorHumanizer AI
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
10
7
9
10
Detection
AI authorship detection
–
Content detection
–
Plagiarism detection
–
Grammar checking
–
Content authenticity verification
–
–
Image authenticity analysis
–
–
Undetectable content writing
–
–
Paraphrasing
–
–
–
Text humanization
–
–
–
Hallucination detection
–
–
–
Humanizing AI text
–
–
–
Summarizing
–
–
–
Writing
–
–
–
APIs
–
–
–
Audio detection
–
–
–
Content moderation
–
–
–
Deepfake detection
–
–
–
Document summarization
–
–
–
Edited image detection
–
–
–
Proofreading
–
–
–
Text enhancement
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 2
▲ 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.