Grammarly vs Dechecker AI vs ZeroGPT vs Undetectable AI

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

Your tool
Grammarly
vs
Competitor 1
Dechecker AI
Competitor 2
ZeroGPT
Competitor 3
Undetectable AI
Compare
4 tools · best value per row highlighted
Your tool Grammarly
grammarly.com
Writing confidence that follows you everywhere
Remove
Competitor Dechecker AI
dechecker.ai
Make main Remove
Competitor ZeroGPT
zerogpt.com
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
49.3Mvisits/mo
99.7Kvisits/mo
20.5Mvisits/mo
—
MoM change
▲ 10.8%
▼ 17.6%
▲ 5.1%
—
6-month growth
-22.5%
-73.5%
-29.5%
—
Global rank web
#688
#387,035
#3,675
—
Avg. last 3 months
46.5M
153.8K
20.5M
—
Bounce rate lower is better
40%
43%
60%
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Pages / visit
7.8
1.5
2.2
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Visit duration
4m 41s
24s
2m 53s
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Traffic sources
● Direct 85% · ● Referral 9%
● Direct 82% · ● Referral 17%
● Direct 90% · ● Referral 9%
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GrammarlyDechecker AIZeroGPTUndetectable AI
015.9M31.8M47.7M63.6MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MDechecker 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 · 99.7KZeroGPT · 29.3MZeroGPT · 23.5MZeroGPT · 20.6MZeroGPT · 23.3MZeroGPT · 29.1MZeroGPT · 28.2MZeroGPT · 26.3MZeroGPT · 21.4MZeroGPT · 19.5MZeroGPT · 20.5M1001K10K100K1M10M100MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MDechecker 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 · 99.7KZeroGPT · 29.3MZeroGPT · 23.5MZeroGPT · 20.6MZeroGPT · 23.3MZeroGPT · 29.1MZeroGPT · 28.2MZeroGPT · 26.3MZeroGPT · 21.4MZeroGPT · 19.5MZeroGPT · 20.5MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Paid
Paid
Starting price
$12per month · free tier available
$5per month · free tier available
$7.99per month
$5per month
Free tier
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Free trial
–
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API access
–
–
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Plans
Free FreePro Custom/moEnterprise Custom/mo
Free Custom/moPlan 2 $5/moPlan 3 $9/moPlan 4 $19/mo+1 more
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10K words $5/mo20K words $9.50/mo35K words $15.75/mo50K words $21.25/mo+1 more
Capabilities input → output
Input
Text
DocumentsText
DocumentsImagesTextVideo
DocumentsImagesText
Output
Text
Text
Text
DataText
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 CheckerHumanizer AI
AI Detection & SafetyAI DetectorAI Image DetectorAI Plagiarism Checker+1 more
AI Detection & SafetyAI DetectorAI Image DetectorHumanizer AI
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
7
2
10
Detection
Plagiarism detection
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AI authorship detection
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Content detection
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Paraphrasing
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Grammar checking
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Text humanization
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Writing
–
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Humanizing AI text
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Image authenticity analysis
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Proofreading
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–
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Undetectable content writing
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–
–
Audio detection
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–
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Edited image detection
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–
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Fact checking
–
–
–
Text enhancement
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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
▲ 0
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.