Grammarly vs QuillBot vs Originality.AI vs GPTZero
Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.
Your tool
Grammarly
vs Grammarly
Competitor 1
QuillBot
QuillBot
Competitor 2
Originality.AI
Originality.AI
Competitor 3
GPTZero
GPTZeroCompare
4 tools · best value per row highlighted
Competitor
GPTZero
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
Traffic estimated monthly website traffic
Monthly visits
49.3Mvisits/mo
31.4Mvisits/mo
1.7Mvisits/mo
11Mvisits/mo
MoM change
▲ 10.8%
▼ 8.4%
▼ 3.1%
—
6-month growth
-22.5%
-27.9%
-37.9%
—
Global rank web
#688
#1,318
#37,307
—
Avg. last 3 months
46.5M
36.7M
1.8M
11M
Bounce rate lower is better
40%
46%
56%
—
Pages / visit
7.8
5.5
2.5
—
Visit duration
4m 41s
2m 52s
2m 31s
—
Traffic sources
● Direct 85% · ● Referral 9%
● Direct 76% · ● Referral 22%
● Direct 86% · ● Referral 13%
—
GrammarlyQuillBotOriginality.AIGPTZero
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
$12per month · free tier available
$19.95per month · free tier available
$12.95per month · free tier available
$12.99per month · free tier available
Free tier
Free trial
–
–
–
API access
–
–
–
Plans
Free FreePro Custom/moEnterprise Custom/mo
—
Basic FreePro $12.95/moEnterprise $136.58/mo
Free FreePremium $12.99/moProfessional $24.99/mo
Capabilities input → output
Input
Text
DocumentsImagesText
DocumentsWeb pagesText
TextDocuments
Output
Text
DocumentsImagesSlidesText
TextData
TextData
Skill level
Beginner-friendly
Beginner-friendly
Intermediate
Beginner-friendly
Categories
Tasks what each tool can do · 2 shared · core partial
Tasks covered
6
9
8
7
Plagiarism detection
Detection
Grammar checking
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Proofreading
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Paraphrasing
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Writing
–
–
Content detection
–
–
Content authenticity verification
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–
AI authorship detection
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–
–
Hallucination detection
–
–
–
Summarizing
–
–
–
Document summarization
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–
–
Editorial fact checking
–
–
–
Fact checking
–
–
–
SEO
–
–
–
Undetectable content writing
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 2
▲ 0
▲ 1
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.