QuillBot vs ToolSmart Free Paraphrasing Tool vs Undetectable AI vs GPTZero
Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.
Your tool
QuillBot
vs QuillBot
Competitor 1
ToolSmart Free Paraphrasing Tool
ToolSmart Free Paraphrasing Tool
Competitor 2
Undetectable AI
Undetectable AI
Competitor 3
GPTZero
GPTZeroCompare
4 tools · best value per row highlighted
Competitor
ToolSmart Free Paraphrasing Tool
ToolSmart Free Paraphrasing Tool
toolsmart.ai
This paraphrasing tool processes text through nine distinct rewriting modes, each applying different transformation rules to the input
Competitor
Undetectable AI
Undetectable AI
undetectable.ai
Undetectable AI bundles an AI text detector, an AI humanizer and an AI image detector into one account.
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
31.4Mvisits/mo
721.4Kvisits/mo
—
11Mvisits/mo
MoM change
▼ 8.4%
▼ 16.1%
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—
6-month growth
-27.9%
-56.9%
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—
Global rank web
#1,318
#75,603
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—
Avg. last 3 months
36.7M
850.8K
—
11M
Bounce rate lower is better
46%
52%
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—
Pages / visit
5.5
1.7
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—
Visit duration
2m 52s
44s
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—
Traffic sources
● Direct 76% · ● Referral 22%
● Direct 84% · ● Referral 13%
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QuillBotToolSmart Free Paraphrasing ToolUndetectable AIGPTZero
Pricing
Model
Freemium
Free
Paid
Freemium
Starting price
$19.95per month · free tier available
Free
$5per month
$12.99per month · free tier available
Free tier
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Free trial
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–
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API access
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Plans
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Free Free
10K words $5/mo20K words $9.50/mo35K words $15.75/mo50K words $21.25/mo+1 more
Free FreePremium $12.99/moProfessional $24.99/mo
Capabilities input → output
Input
DocumentsTextImages
Text
TextImagesDocuments
DocumentsText
Output
TextSlidesImagesDocuments
Text
TextData
TextData
Skill level
Beginner-friendly
Beginner-friendly
Beginner-friendly
Beginner-friendly
Categories
Tasks what each tool can do · 0 shared · core partial
Tasks covered
9
4
10
7
Detection
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AI authorship detection
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Paraphrasing
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Content detection
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Plagiarism detection
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Text humanization
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Grammar checking
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Undetectable content writing
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Hallucination detection
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–
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Humanizing AI text
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Image authenticity analysis
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Phrase variation
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Summarizing
–
–
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Writing
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–
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Audio detection
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–
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Content authenticity verification
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Document summarization
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Edited image detection
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Language refinement
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Proofreading
–
–
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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
▲ 2
▲ 0
▲ 0
▲ 1
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.