Best 77 Plagiarism Checker Tools in 2025

AI Detector, ZeroGPT, Grammarize, Plag, NoPlagio, PlagiarismSearch, AI Checker, Rewording Tool, Winston AI, Factful are the best paid / free Plagiarism Checker tools.

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100.00%
0
Detect AI-generated content.
--
0
Communicate flawlessly
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100.00%
0
Powerful plagiarism checker for students and teachers.
116.6K
98.23%
2
Online plagiarism detection and prevention platform.
67.4K
16.57%
1
An advanced online plagiarism checker for detecting and preventing plagiarism.
--
0
Check and improve writing with ease.
8.6K
63.25%
0
Transform your writing effortlessly with Rewording Tool.
539.4K
31.80%
3
AI content detector and plagiarism checker.
--
78.25%
1
Ultimate productivity tool for precision writing.
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70.58%
0
Tinq.ai is an AI toolkit offering various NLP capabilities as a service.
432.1K
21.02%
0
Original Writing, Made Easy
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42.14%
1
Instant AI-powered assignment feedback.
8.0K
42.94%
2
Effortlessly switch words and save time.
179.8K
37.22%
0
An accurate plagiarism checker for teachers and students.
10.3K
75.71%
0
AI powered DET prep tool
118.1K
56.60%
3
Boost SEO content production effortlessly.
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57.42%
4
Advacheck enhances academic paper authenticity with comprehensive internet search.
82.1K
16.33%
0
AI-enhanced writing editor for students and academics.
342.7K
39.20%
7
A free AI content detector, ChatGPT plagiarism checker, and word counter.
37.9K
32.31%
1
The Best AI Essay Writing Assistant
53.9M
45.32%
61
Grammarly - Enhance writing skills and communicate confidently with AI writing assistance.
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100.00%
2
Craft high-quality essays with ease.
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100.00%
0
Enhance your writing with CorrectEnglish
88.2K
42.61%
2
Generate human-like, plagiarism-free essays with EssayFlow.
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4
Detect AI-generated content with ZeroGPT Detector's trusted AI-based plagiarism checker.
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17.16%
7
Write clear, concise, and plagiarism-free text with Paraphraser.
11.0K
38.95%
1
Free website uses AI to detect plagiarism and check content originality efficiently.
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0
Empowering non-technical users with AI tools.
119.2K
39.20%
12
Cramly.ai is an AI-powered educational tool that helps students study effectively.
7.2K
42.19%
0
Automated tool for checking scientific manuscripts.
--
3
Generate humanized essays using AI technology.
50.5K
26.22%
5
EssayGenius is an AI platform that assists users in writing essays faster with quality content.
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1
Create content faster with advanced A.I.
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2
AI-powered platform for grading essays
338.8K
14.63%
6
Revolutionizing academic writing with AI.
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100.00%
0
Confidently detect AI-generated content
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43.08%
5
SchoolAI is a time-saving AI tool for schools, streamlining tasks like email drafting and lesson planning.
6.3K
92.47%
0
1-click SEO Researcher & Writer
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48.53%
3
Express your thoughts and styles with academic integrity.
51.1K
17.98%
1
Fast & smart AI essay writer.
1.7M
32.32%
12
Advanced AI tool detects plagiarism, improves content quality, ensures originality.
3.0M
42.93%
8
Copyleaks: AI platform instantly detects plagiarism & authenticates human/AI content.
129.4K
41.45%
9
A platform that offers AI essay writing tools for students to create unique and plagiarism-free essays.
195.4K
14.59%
11
Paraphrase Tool offers free online paraphrasing, grammar check, and plagiarism elimination for 100+ languages.
5.3K
17.97%
0
Rephrase text in seconds
24.1K
66.76%
5
Effortlessly revitalize your text.
2.9M
13.56%
29
Smodin is a platform that improves writing with various tools for students, writers, and internet workers globally.
39.6K
71.73%
0
AI-powered content planning and optimization platform for improved content strategy and search engine visibility.
389 users
22.04%
3
Effortlessly generate high-quality content with AI technology.
--
100.00%
2
Top AI Digital Marketing in Australia
89.2K
70.58%
2
AI-powered essay writing tool for students
--
77.02%
2
Generate high-quality essays with AI essay writer.
98.1K
12.55%
1
AI essay writing with real citations.
--
100.00%
8
Essay writing service with AI integration and expert writers.
61.4K
17.70%
16
Paraphrasing tool with 20 modes for clarifying and adapting your words to your audience.
113.7K
37.90%
1
Online essay writing service providing academic writing help to students.
258.4K
11.21%
3
Trinka is an AI grammar checker for academic and professional writing.
70.1K
39.64%
3
Customized AI essay writer for academic tasks.
--
100.00%
1
Free AI essay writer for stress-free writing
290.9K
7.78%
2
Convert AI to human text with AI Humanizer
--
1
AI-powered content generation in seconds.
--
100.00%
2
AI-powered Tootler helps write exceptional statements of purpose for study, work, and travel visas.
163.0K
43.97%
9
A revolutionary AI-powered tool helps students improve their writing skills and academic performance.
--
3
Notelier is a web app for writing and studying notes and essays quickly.
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0
Humanize AI text and achieve 100% human score.
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37.40%
6
Charley.ai is an AI Essay Writer that generates impressive essays quickly and effortlessly.
76.6K
9.88%
1
ContentBot is an AI tool that automates and streamlines content creation for marketers.
--
36.42%
3
Europe's No.1 AI generator for high-quality text and images.
579.7K
20.36%
7
"Rytr is an AI writing assistant that generates unique content quickly and cost-effectively."
End

What is Plagiarism Checker?

A plagiarism checker is a software tool that analyzes text to identify instances of potential plagiarism by comparing the content to a database of sources. It helps ensure originality in writing and can detect copied content from websites, publications, and previously submitted works. The development of automated plagiarism detection has been driven by the increasing availability of digital content and the need to maintain academic and professional integrity.

What is the top 10 AI tools for Plagiarism Checker?

Core Features
Price
How to use

Grammarly

Robust, real-time communication assistance
Generative AI for writing, rewriting, and getting ideas
Writing enhancements for grammar, tone, clarity, and team consistency
Writing assistance on desktop apps, websites, mobile apps, emails, and social media

premium Grammarly Premium offers advanced writing suggestions and checks for more in-depth writing improvement.
business Grammarly Business provides tailored solutions for teams and businesses, including centralized billing, team management, and enhanced security.
education Grammarly for Education offers writing improvement tools and resources for students and institutions.

To use Grammarly, users can download the app or browser extension on their Windows or Mac devices. Additionally, Grammarly integrates with popular apps and sites like Word, Gmail, Google Docs, LinkedIn, and more. Once installed, Grammarly provides suggestions and corrections in real-time as users write across different platforms. Users can rely on Grammarly's AI-powered writing tools to generate cover letters, emails, and other documents, maintaining their unique voice and style. With Grammarly's comprehensive writing assistance, users can write confidently and effectively.

Copyleaks

AI-based content detection
Verification of human or AI-generated content
Plagiarism detection
API integration for seamless implementation
LMS integration for easy usage within learning platforms
Gen AI Governance for preventing data leaks
AI Grader for efficient assessment of standardized tests

To use Copyleaks, simply create an account and log in. Depending on your needs, you can choose between different products such as AI Content Detector, Plagiarism Detector, Gen AI Governance, and AI Grader. These products provide features like detecting AI-generated content, verifying originality, preventing data leaks, and assessing standardized tests. Copyleaks offers options for API integration, LMS integration, and a Chrome extension for easy access and integration into existing workflows.

Smodin

Smodin offers several core features to aid the writing process. These include: 1. Text Rewriter: Allows users to rewrite their text to improve clarity and originality. 2. Plagiarism Checker: Helps identify any instances of plagiarism in written content. 3. AI Writer: Generates high-quality, structured text complete with references. 4. Citation Machine: Automatically generates references in MLA and APA formats. 5. Multi-lingual Translator: Provides translation services for multiple languages to facilitate writing in different languages.

professional_plan $X per month

To use Smodin, sign up with a Google account or email address. Once logged in, users can access various tools such as the text rewriter, plagiarism checker, AI writer, citation machine, and translator. Simply input your text or document into the desired tool and follow the prompts to obtain the desired results. Smodin also offers an AI writing companion called CHATin, which allows users to generate content by asking questions and combines the power of Smodin, Google, and ChatGPT.

Originality.AI - AI Content Checker and Plagiarism Check

Originality.AI offers several core features that make it a powerful AI content checker and plagiarism detection tool: 1. Accurate AI Detection: Originality.AI has the most accurate AI content detection, with 99% accuracy for GPT-4 and 83% accuracy for ChatGPT. It can detect AI-generated content and distinguish it from human-written content. 2. Plagiarism Checking: The tool includes a best-in-class plagiarism checking feature, allowing you to identify if content has been copied from other sources. It can even detect paraphrase plagiarism when paraphrasing tools are used. 3. Readability Score: Originality.AI provides a readability score for your content, helping you understand its readability level. It uses reliable readability tests and target ranges that align with Google's requirements for content ranking. 4. Team Management: You can add and remove team members, manage their access levels, and track their activity. This feature is particularly useful for content marketing agencies and publishers. 5. Shareable Reports: You can easily share the results of AI detection, plagiarism checking, and readability scoring by generating shareable reports. This allows you to demonstrate the originality, quality, and compliance of your content. 6. AI Content Detector API: Originality.AI offers a well-documented API that allows you to integrate its AI content detection capabilities into your existing tools or workflow. These core features make Originality.AI a comprehensive content creation quality control tool, helping you protect your reputation and improve your content's originality and readability.

Using Originality.AI is simple and straightforward. Here's how you can use it: 1. Sign up on the Originality.AI website and create an account. 2. Choose a pricing plan that suits your needs. 3. Access the user dashboard and start using the AI content detection and plagiarism checking features. 4. To check content, either paste the text directly, upload a file, or provide a URL. 5. Originality.AI will analyze the content using its advanced AI algorithms and provide you with accurate results. 6. Check the detected AI content, plagiarism score, and readability score. 7. Use the Share Scan link to share the results or generate a detailed report. 8. Explore additional features like team management, API integration, and bulk site scan to enhance your content quality control process. With Originality.AI, you can ensure the originality and quality of your content with ease.

BypassGPT

Bypass AI detection
Create undetectable AI content
Plagiarism-free rewrites
Completely error-free
High-ranking content
Authentic and creative content
Bypass spam filters

BypassGPT can create 100% undetectable AI text that mimics a human touch in three easy steps. Copy your original, AI-generated content into our portal. Click the button to start the BypassGPT process. Moments later, receive your rewritten text and use it however you like!

Rytr - Best AI Writer, Content Generator & Writing Assistant

AI-powered content generation for various writing needs
40+ use cases and templates available
Support for 30+ languages and 20+ tones of voice
Scientific copywriting formulas, such as AIDA & PAS, for high-quality output
Powerful rich-text editor for easy customization and polishing
Built-in plagiarism checker to ensure content uniqueness
Extensive formatting options for aesthetically pleasing text
Seamless collaboration, team billing, and project management features
Browser extension for writing copy across different platforms
SEO analyzer to find optimal keywords and create well-written content
Responsive and mobile-friendly interface
Industry-leading customer support and community
Integration plugins for popular apps like WordPress and Shopify
API access for integrating Rytr into existing applications

free_plan Free Generate 10k characters per month
saver_plan $9 per month or $90 per year Generate 100k characters per month
unlimited_plan $29 per month or $290 per year Unlimited character generation per month

To use Rytr, simply choose a use case from over 40 options available. Then, provide some input or context to guide the AI. Rytr will generate the desired content within seconds. Users can customize the generated content further using the rich-text editor, which allows for rewording, shortening, and formatting options. Rytr also offers collaboration features, team billing, and project management tools to streamline the writing workflow. Users can access Rytr via its web platform or use the browser extension for more convenient copywriting on the go.

Winston AI

AI content detection
Plagiarism checker
Labeling feature
OCR technology

Free $0/month Up to 2,000 words scan
Essential $12/month Up to 80,000 words scan
Advanced $19/month Up to 200,000 words scan

1. Create your account for free to begin checking for AI content. 2. Enter the text you want to check for AI. 3. Get your results in seconds.

Quetext

DeepSearch™ technology for accurate plagiarism detection
Contextual analysis and word placement
Lightspeed recognition for fast results
Privacy protection
Comprehensive plagiarism score backed by billions of internet sources

Free Plagiarism checks on 500 words (1 page). ColorGrade™ feedback. Contextual analysis. Fuzzy matching. Conditional scoring
Premium $8.25 per month 100,000 words (200 pages) for plagiarism checks. DeepSearch™ Extended. Citation Assistant. Downloadable originality report. Custom URL exclusion. Interactive snippet text. Premium support

Quetext's plagiarism checker analyzes your text to identify plagiarism, resolve other writing issues, and build citations with ease.

ContentDetector.AI

AI content detection for ChatGPT and other AI-generated content
Percentage score indicating the likelihood of AI-generated content
Word counting functionality
Easy-to-use interface
Free to use

To use ContentDetector.AI, simply copy and paste the AI-generated or ChatGPT content into the text field on the website. Click on the 'analyze' button, and the tool will deliver an estimated percentage score indicating the likelihood that the content was generated by AI. The tool also counts the number of words in the text.

Samwell.ai

Guided Essays
Audio Summaries
Plagiarism Free
In-Text Citations
Related Videos
Interest Based Learning

Free Plan $0 /month 1,000 words, up to 1,000 word essays, video learning materials, in-text citations, key point highlights, authentic sources, start for free
High School $11 /month 15,000 words per month, up to 15,000 word essays, bypass all AI detectors, video learning materials, in-text citations, key point highlights, authentic sources, plagiarism checker
University $16 /month 90,000 words per month, up to 60,000 word essays, bypass all AI detectors, video learning materials, in-text citations, key point highlights, authentic sources, plagiarism checker, priority support
Academic $24 /month 250,000 words per month, up to 60,000 word essays, bypass all AI detectors, video learning materials, in-text citations, key point highlights, authentic sources, plagiarism checker, priority support

Sign up for an account on Samwell.ai. Enter your essay title and provide any instructions. Use the AI-powered features to write, cite, and learn. Review and edit your essay as needed. Download or share your final essay.

Newest Plagiarism Checker AI Websites

AI plagiarism checker
Top AI Digital Marketing in Australia
Detect AI-generated content.

Plagiarism Checker Core Features

Text comparison against extensive databases of web pages, publications, and previously submitted content.

Identification of exact matches, paraphrasing, and similar sentence structures.

Generation of similarity reports highlighting potential plagiarism instances and their sources.

Integration with various file formats and platforms, such as word processors and learning management systems.

What is Plagiarism Checker can do?

Educational institutions use plagiarism checkers to detect academic dishonesty and ensure the integrity of student work.

Academic publishers and conferences employ plagiarism checkers to screen submissions for originality.

Content creation agencies use plagiarism checkers to ensure the uniqueness of their clients' content.

Legal professionals utilize plagiarism checkers to identify potential copyright infringement cases.

Plagiarism Checker Review

Users generally find plagiarism checkers to be helpful tools for detecting potential instances of plagiarism and ensuring the originality of their work. They appreciate the time-saving aspect and the peace of mind these tools provide. However, some users caution against relying solely on plagiarism checkers, emphasizing the importance of human judgment and proper citation practices. Criticisms include the occasional false positives and the inability to detect all forms of plagiarism, particularly heavily paraphrased content.

Who is suitable to use Plagiarism Checker?

A student uses a plagiarism checker to ensure their essay is original before submitting it for grading.

A researcher employs a plagiarism checker to verify the novelty of their work before publishing.

An author uses a plagiarism checker to avoid unintentional plagiarism in their manuscript.

How does Plagiarism Checker work?

To use a plagiarism checker, the user typically uploads or pastes the text into the tool's interface. The software then analyzes the content, comparing it against its database of sources. Results are presented in a report format, highlighting instances of potential plagiarism and providing links to the original sources. Some tools allow users to exclude specific sources or customize the sensitivity of the plagiarism detection algorithm.

Advantages of Plagiarism Checker

Ensures originality in writing and helps prevent unintentional plagiarism.

Saves time by automating the process of checking for plagiarism across multiple sources.

Provides documentation to support the authenticity of the work.

Helps maintain academic integrity and professional ethics.

Offers learning opportunities by identifying areas where proper citation or paraphrasing is needed.

FAQ about Plagiarism Checker

What is a plagiarism checker?
How does a plagiarism checker work?
Can a plagiarism checker detect all forms of plagiarism?
Are plagiarism checkers 100% accurate?
Can plagiarism checkers be fooled?
Are plagiarism checkers essential for ensuring academic integrity?