QuillBot vs Undetectable AI vs Grammarly

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

Your tool
QuillBot
vs
Competitor 1
Undetectable AI
Competitor 2
Grammarly
Competitor 3
Suggested competitors for QuillBot: Wordtune88% GPTZero86% Originality.AI84% WriteHuman82% StealthGPT82% Scribbr Plagiarism Checker82% LanguageTool82% Paraphraser.io82%
Compare
3 tools · best value per row highlighted
Your tool QuillBot
quillbot.com
Rephrase until it sounds right
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Competitor Undetectable AI
undetectable.ai
Undetectable AI bundles an AI text detector, an AI humanizer and an AI image detector into one account.
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Competitor Grammarly
grammarly.com
Writing confidence that follows you everywhere
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Traffic estimated monthly website traffic
Monthly visits
31.4Mvisits/mo
—
49.3Mvisits/mo
MoM change
▼ 8.4%
—
▲ 10.8%
6-month growth
-27.9%
—
-22.5%
Global rank web
#1,318
—
#688
Avg. last 3 months
36.7M
—
46.5M
Bounce rate lower is better
46%
—
40%
Pages / visit
5.5
—
7.8
Visit duration
2m 52s
—
4m 41s
Traffic sources
● Direct 76% · ● Referral 22%
—
● Direct 85% · ● Referral 9%
QuillBotUndetectable AIGrammarly
015.9M31.8M47.7M63.6MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3M10M100MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MGrammarly · 58.8MGrammarly · 54.5MGrammarly · 55.9MGrammarly · 55.7MGrammarly · 63.6MGrammarly · 58.3MGrammarly · 54MGrammarly · 45.8MGrammarly · 44.5MGrammarly · 49.3MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Paid
Freemium
Starting price
$19.95per month · free tier available
$5per month
$12per month · free tier available
Free tier
–
Free trial
–
API access
–
–
Plans
—
10K words $5/mo20K words $9.50/mo35K words $15.75/mo50K words $21.25/mo+1 more
Free FreePro Custom/moEnterprise Custom/mo
Capabilities input → output
Input
DocumentsImagesText
DocumentsImagesText
Text
Output
DocumentsImagesSlidesText
DataText
Text
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
AI Detection & SafetyAI DetectorAI Image DetectorHumanizer AI
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+4 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
10
6
Detection
Paraphrasing
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Grammar checking
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Writing
–
Plagiarism detection
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Proofreading
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Undetectable content writing
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AI authorship detection
–
–
Content detection
–
–
Text humanization
–
–
Humanizing AI text
–
–
Image authenticity analysis
–
–
Summarizing
–
–
Audio detection
–
–
Document summarization
–
–
Edited image detection
–
–
Text enhancement
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 2
▲ 0
▲ 1
Saves
0
0
0
Reviews
0
0
0
Prompts
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.