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DupliChecker

Name: DupliChecker
Price: 100 USD

Free plan APIWeb

What DupliChecker is

DupliChecker is an online set of SEO and text analysis tools, including a plagiarism checker for assessing whether text is original. Its AI content detector accepts pasted text or files uploaded from a device, Google Drive, or Dropbox, then shows percentage scores for human and AI content. The detector page says it is free to use without signup or credits. DupliChecker describes its detection methods as natural language processing, machine learning comparison, and syntax and semantic analysis.

Other tools listed include paraphrasing, reverse image search, backlink checking and generation, proxy lists, sitemap generation, malware tracking, site link analysis, and keyword research. The plagiarism checker has a free plan and paid tiers. Paid plans set limits for searches, total words, user seats, and API availability; listed premium features include URL checks, downloadable PDF reports, multiple-file uploads, citation and URL exclusions, and searches of up to 25,000 words. API access is available on some plans. DupliChecker is available on the web and through an API. Its privacy policy says it does not sell or rent personal data, and explains that submitted content may be viewed in certain circumstances, such as support requests or legal obligations.

Who it suits

DupliChecker suits people looking for online plagiarism and text analysis tools, as well as users who want a separate AI content detector with file uploads and percentage scores. Its broader SEO tools may also suit content marketers and SEO users.

What it does well

Free plagiarism-checker plan is available.
AI detector works without signup or credits.
Detector accepts device, Google Drive, and Dropbox uploads.
Paid plans include PDF reports and URL checks.
Some paid plans include API access.
Privacy policy says personal data is not sold or rented.

What to know first

Paid plagiarism plans limit searches and total words.
API access varies by paid plan.
Premium subscriber data may be deleted after unsubscribing.

Limits

The Basic II plan costs $9.99 a month and includes 100 searches, 30,000 total words, 0 user seats, and no API access.

Plans

Plan	Billed and limits	Price
Pro X	$100.00 /Month · 2,000 searches · 600,000 total words · 9 user seats · API available	$100 a month
Basic IV	$19.99 /Month · 240 searches · 72,000 total words · 2 user seats · API available	$19.99 a month
Basic II	$9.99 /Month · 100 searches · 30,000 total words · 0 user seats · API unavailable	$9.99 a month

As duplichecker.com lists them, read 4 Oct 2026. The maker's own page has the final word.

Getting started

Visit https://www.duplichecker.com/.
Open the plagiarism checker or another listed tool.
Use the AI detector by pasting text or uploading a file from a device, Google Drive, or Dropbox.
Choose a paid plagiarism-checker plan if its search, word, seat, or API limits fit your needs.

Verdict

Choose DupliChecker if you want online plagiarism checking alongside SEO tools, or a free AI detector that accepts pasted text and file uploads. Compare the paid checker tiers if you need higher search or word allowances, multiple user seats, or API access.

Questions

Is DupliChecker free?

It has a free plagiarism-checker plan. The AI detector page says the detector is free to use without signup or credits.

How much do paid plans cost?

Basic II is $9.99 a month, Basic IV is $19.99 a month, and Pro X is $100 a month.

Does DupliChecker provide API access?

Yes. API access is available on some paid plans; Basic II does not include it.

Which platforms does it support?

DupliChecker is available on the web and through an API.

What files can I submit to the AI detector?

You can paste text or upload files from a device, Google Drive, or Dropbox.

Who makes DupliChecker?

The about page describes DupliChecker as an online provider of SEO and text analysis tools intended to make those tools accessible worldwide.

Facts from DupliChecker's own pages

AI detector: The AI content detector accepts pasted text or uploaded files and displays human and AI content percentage scores. · duplichecker.com, 4 Oct 2026
AI detector access: The AI detector page says it is free to use without signup or credits. · duplichecker.com, 4 Oct 2026
Audience: The about page describes the service as online SEO and text analysis tools intended to make SEO and content marketing tools accessible worldwide. · duplichecker.com, 4 Oct 2026
Checker plan limits: The pricing page lists paid plagiarism-checker plans with search, total word, user-seat, and API availability limits. · duplichecker.com, 4 Oct 2026
Data retention: The privacy policy says premium subscriber data is stored in personal site accounts and may be automatically deleted after the user unsubscribes. · duplichecker.com, 4 Oct 2026
Detection methods: The AI detector says it uses NLP, machine learning comparison, and syntax and semantic analysis. · duplichecker.com, 4 Oct 2026
Founded: 2006 · duplichecker.com, 28 Sept 2026
Other tools: The company lists plagiarism checking, paraphrasing, reverse image search, backlink checking, proxy lists, sitemap generation, backlink generation, malware tracking, site link analysis, and keyword research among its tools. · duplichecker.com, 4 Oct 2026
Plagiarism checking: The site offers an online plagiarism checker for assessing the originality of text. · duplichecker.com, 4 Oct 2026
Premium features: The pricing page lists full data encryption, URL checking, downloadable PDF reports, multiple-file uploads, citation and URL exclusion, and up to 25,000 words per search among plan benefits. · duplichecker.com, 4 Oct 2026
Premium support: The pricing page says premium users and institutions get support with using the deep plagiarism checker, interpreting reports, and technical issues. · duplichecker.com, 4 Oct 2026
Privacy and data sale: The privacy policy says DupliChecker does not sell or rent personal data. · duplichecker.com, 4 Oct 2026
Upload sources: The AI detector page shows upload options for a device, Google Drive, and Dropbox. · duplichecker.com, 4 Oct 2026
User content review: The privacy policy says employees do not monitor all uploaded or transmitted user content, though it may be viewed in specified circumstances such as support requests or legal obligations. · duplichecker.com, 4 Oct 2026