Grammarly vs GPTZero vs Dechecker AI vs QuillBot

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

Your tool
Grammarly
vs
Competitor 1
GPTZero
Competitor 2
Dechecker AI
Competitor 3
QuillBot
Compare
4 tools · best value per row highlighted
Your tool Grammarly
grammarly.com
Writing confidence that follows you everywhere
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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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Competitor Dechecker AI
dechecker.ai
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Competitor QuillBot
quillbot.com
Rephrase until it sounds right
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Traffic estimated monthly website traffic
Monthly visits
49.3Mvisits/mo
11Mvisits/mo
99.7Kvisits/mo
31.4Mvisits/mo
MoM change
▲ 10.8%
—
▼ 17.6%
▼ 8.4%
6-month growth
-22.5%
—
-73.5%
-27.9%
Global rank web
#688
—
#387,035
#1,318
Avg. last 3 months
46.5M
11M
153.8K
36.7M
Bounce rate lower is better
40%
—
43%
46%
Pages / visit
7.8
—
1.5
5.5
Visit duration
4m 41s
—
24s
2m 52s
Traffic sources
● Direct 85% · ● Referral 9%
—
● Direct 82% · ● Referral 17%
● Direct 76% · ● Referral 22%
GrammarlyGPTZeroDechecker AIQuillBot
015.9M31.8M47.7M63.6MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MGPTZero · 11MDechecker AI · 766Dechecker AI · 24.5KDechecker AI · 170KDechecker AI · 302.1KDechecker AI · 376.1KDechecker AI · 423.6KDechecker AI · 410.8KDechecker AI · 240.8KDechecker AI · 121KDechecker AI · 99.7KQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4M1001K10K100K1M10M100MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MGPTZero · 11MDechecker AI · 766Dechecker AI · 24.5KDechecker AI · 170KDechecker AI · 302.1KDechecker AI · 376.1KDechecker AI · 423.6KDechecker AI · 410.8KDechecker AI · 240.8KDechecker AI · 121KDechecker AI · 99.7KQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
$12per month · free tier available
$12.99per month · free tier available
$5per month · free tier available
$19.95per month · free tier available
Free tier
Free trial
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–
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API access
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Plans
Free FreePro Custom/moEnterprise Custom/mo
Free FreePremium $12.99/moProfessional $24.99/mo
Free Custom/moPlan 2 $5/moPlan 3 $9/moPlan 4 $19/mo+1 more
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Capabilities input → output
Input
Text
DocumentsText
DocumentsText
DocumentsImagesText
Output
Text
DataText
Text
DocumentsImagesSlidesText
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
AI Detection & SafetyAI DetectorAI Plagiarism Checker
AI Detection & SafetyAI DetectorAI Plagiarism CheckerHumanizer AI
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
7
1
9
Detection
Grammar checking
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Plagiarism detection
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Paraphrasing
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Writing
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Proofreading
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AI authorship detection
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Content detection
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Hallucination detection
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Summarizing
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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
▲ 1
▲ 1
▲ 0
▲ 2
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
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.