QuillBot vs Harpa vs GPTZero

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

Your tool
QuillBot
vs
Competitor 1
Harpa
Competitor 2
GPTZero
Competitor 3
Suggested competitors for QuillBot: Grammarly92% Wordtune88% Originality.AI84% Undetectable AI84% Paraphraser.io82% StealthGPT82% Scribbr Plagiarism Checker82% WriteHuman82%
Compare
3 tools · best value per row highlighted
Your tool QuillBot
quillbot.com
Rephrase until it sounds right
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Competitor Harpa
harpa.ai
HARPA AI is a Chrome Extension and NoCode RPA platform that automates web tasks to save time and money. It uses a hybrid AI engine built on ChatGPT and Machine Learning to perform tasks such as provid
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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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Traffic estimated monthly website traffic
Monthly visits
31.4Mvisits/mo
281.1Kvisits/mo
11Mvisits/mo
MoM change
▼ 8.4%
▼ 18.4%
—
6-month growth
-27.9%
-55.5%
—
Global rank web
#1,318
#170,120
—
Avg. last 3 months
36.7M
326.3K
11M
Bounce rate lower is better
46%
53%
—
Pages / visit
5.5
1.6
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Visit duration
2m 52s
1m 09s
—
Traffic sources
● Direct 76% · ● Referral 22%
● Direct 95% · ● Referral 4%
—
QuillBotHarpaGPTZero
014.9M29.9M44.8M59.8MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MHarpa · 269.4KHarpa · 340KHarpa · 397.4KHarpa · 367.5KHarpa · 631.4KHarpa · 457.2KHarpa · 421.2KHarpa · 353.4KHarpa · 344.4KHarpa · 281.1KGPTZero · 11M100K1M10M100MQuillBot · 59.8MQuillBot · 47MQuillBot · 42.9MQuillBot · 43.5MQuillBot · 49.6MQuillBot · 48.1MQuillBot · 44.6MQuillBot · 34.3MQuillBot · 31.4MHarpa · 269.4KHarpa · 340KHarpa · 397.4KHarpa · 367.5KHarpa · 631.4KHarpa · 457.2KHarpa · 421.2KHarpa · 353.4KHarpa · 344.4KHarpa · 281.1KGPTZero · 11MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Starting price
$19.95per month · free tier available
€14.3per month
$12.99per month · free tier available
Free tier
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Free trial
–
–
–
API access
–
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Plans
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Everyone €14.30/moPro €19.60/moLife €238
Free FreePremium $12.99/moProfessional $24.99/mo
Capabilities input → output
Input
DocumentsImagesText
TextWeb pages
DocumentsText
Output
DocumentsImagesSlidesText
DataText
DataText
Skill level
Beginner-friendly
Intermediate
Beginner-friendly
Categories
AI Detection & SafetyWriting & ContentAI DetectorAI Grammar Checker+5 more
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeVideo Editing+7 more
AI Detection & SafetyAI DetectorAI Plagiarism Checker
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
10
7
Detection
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Plagiarism detection
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Summarizing
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Grammar checking
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AI authorship detection
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Agents
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Chrome extensions
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Paraphrasing
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Content detection
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Email automation
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Hallucination detection
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–
Video summaries
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Web scraping
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–
Writing
–
–
Chatbots
–
–
Content authenticity verification
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Document summarization
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Email management
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Proofreading
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SEO
–
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Undetectable content writing
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Web browsing
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 2
▲ 1
▲ 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.