GPTZero vs Grammarly vs Turnitin vs Winston AI

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
Turnitin
Competitor 3
Winston AI
Compare
4 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
Remove
Competitor Grammarly
grammarly.com
Writing confidence that follows you everywhere
Make main Remove
Competitor Turnitin
turnitin.com
Turnitin is an academic integrity suite that schools, universities, and research organizations use to verify originality and deal with AI-written text.
Make main Remove
Competitor Winston AI
gowinston.ai
Winston AI is an AI content detector and plagiarism checker built for education, SEO, and writing.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
11Mvisits/mo
49.3Mvisits/mo
—
—
MoM change
—
▲ 10.8%
—
—
6-month growth
—
-22.5%
—
—
Global rank web
—
#688
—
—
Avg. last 3 months
11M
46.5M
—
—
Bounce rate lower is better
—
40%
—
—
Pages / visit
—
7.8
—
—
Visit duration
—
4m 41s
—
—
Traffic sources
—
● Direct 85% · ● Referral 9%
—
—
GPTZeroGrammarlyTurnitinWinston AI
015.9M31.8M47.7M63.6MGPTZero · 11MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3M10M100MGPTZero · 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
Starting price
$12.99per month · free tier available
$12per month · free tier available
—
$10per month · free tier available
Free tier
–
Free trial
–
–
API access
–
–
Plans
Free FreePremium $12.99/moProfessional $24.99/mo
Free FreePro Custom/moEnterprise Custom/mo
—
Free FreeEssential $10/moAdvanced $16/moElite $26/mo+1 more
Capabilities input → output
Input
DocumentsText
Text
DocumentsText
DocumentsImagesText
Output
DataText
Text
Data
Data
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyAI DetectorAI Plagiarism Checker
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
AI Detection & SafetyAI DetectorAI Plagiarism Checker
AI Detection & SafetyAI DetectorAI Image DetectorAI Plagiarism Checker
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
7
6
8
8
Plagiarism detection
Detection
AI authorship detection
–
Content detection
–
Content authenticity verification
–
Grammar checking
–
–
Paraphrasing
–
–
–
Writing
–
–
–
Exam cheating
–
–
–
Hallucination detection
–
–
–
Image authenticity analysis
–
–
–
OCR
–
–
–
Proofreading
–
–
–
Academic integrity advising
–
–
–
Deepfake detection
–
–
–
Exam grading
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 1
▲ 0
▲ 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.