As AI content in Google continues to increase overall and AI increasingly impacts education, a number of questions are coming to the forefront.
These are all questions that need answering. Further, they require an effective and reliable AI and plagiarism checker.
We’ve shared reviews on the best AI content detectors and the best free plagiarism scanners.
This guide aims to look at tools that offer both AI and plagiarism scanning features so that you can identify both potential instances of AI content and plagiarism to speed up your editorial workflow or assignment review.
Check out these five top AI and plagiarism scanning tools to see which one best suits your specific needs.
Results from our quick test of AI scans vs. ChatGPT-generated content:
For a more comprehensive analysis of AI detection accuracy, read our Accuracy Study.
Here are five of the most popular tools for scanning for AI and plagiarism in writing. This list consists of a wide range of options, from pay-per-use tools to monthly subscriptions to modern and traditional plagiarism detectors.
Links: AI Detection and Plagiarism Scans
Price: Pay As You Go and Subscription options. Learn more on our pricing page.
Best for: Best-in-class and patented industry-leading AI detection and plagiarism scans.
When it comes to all-in-one AI and plagiarism scanning capabilities, Originality.ai is a fantastic choice. Not only does it offer users a robust, high-quality plagiarism scan, but it can also identify AI content with the very same check (see the screenshot below).
Plus, with the release of our updated Originality.ai Chrome Extension in 2026, you can now scan for AI and plagiarism in Google Docs. Identify AI and plagiarism right where you work.
With Originality.ai, streamlining your editorial workflow or reviewing assignments (such as with Moodle LMS) has never been easier.
Choose from a Pay as You Go or subscription pricing option to find what works best for you.
Originality.ai is an industry-leader in AI and plagiarism scans, learn more:
Link: Grammarly Plagiarism Review & Grammarly AI Review
Price: Free plans (doesn’t include all features). Premium options start at $12 per month.
Pros: Comprehensive writing support and guidance.
Another popular option for identifying AI and plagiarism is Grammarly. The platform is easy to navigate, and you can conduct scans with just a couple of clicks.
While you can create an account with Grammarly for free, you’ll need to sign up for a paid monthly membership to access premium features, with prices starting at $12 per month.
In addition to plagiarism scans, Grammarly also announced an AI detector as part of its suite of tools. We reviewed both Grammarly’s AI and plagiarism scanning tools, here are a few highlights from the articles:
We also ran the ChatGPT-generated content sample from earlier in this article through Grammarly’s free AI detector for comparison: Originality.ai 100% Likely AI vs. Grammarly 89% Resembles AI.
Link: Scribbr Review
Price: Prices start at $19.95 for documents up to 7,500 words.
Pros: Reviewing student and academic papers.
Scribbr highlights that they are a top pick for editing or reviewing academic papers and offer services tailored to education.
While their free plan is limited, it does give you an idea of the user interface and capabilities of the Scribbr platform. If you are looking for a premium option, prices for Scribbr start at $19.95 to scan up to 7,500 words. This puts the price point for Scribbr as a bit more costly than other platforms on this list.
In addition to plagiarism scans, Scribbr also provides an AI scanning feature. Read more in our Scribbr Review.
Similar to our test with Originality.ai and Grammarly, we also pasted the ChatGPT-generated text into Scribbr’s AI detector: Originality.ai 100% Likely AI vs. Scribbr 72% AI
Interested in learning more about Originality.ai for educators? Visit our education page.
Link: Copyscape Review
Price: Pay per use
Pros: Identifying plagiarism on websites
Another pay-per-use option is Copyscape. While the user interface is outdated, its plagiarism detection is still a popular option for identifying potential plagiarism.
While they don’t highlight a specific AI scan on their homepage, Copyscape notes that AI tools may replicate content already published elsewhere and advertises their premium tool as a way to identify these instances.
In our recent review of Copyscape’s plagiarism detector, Originality.ai outperformed Copyscape in detecting global plagiarism.
A threshold in plagiarism detection refers to the percentage of content similarity at which a text will be flagged as plagiarized.
Note: As Copyscape doesn’t offer an accessible AI scanning tool, we could not test its capability to identify the ChatGPT text sample.
Turnitin platform
Link: Turnitin Review
Price: Plans vary by product
Pros: Reviewing educational content.
Turnitin offers multiple products, including PlagScan, Similarity, and iThenticate (for plagiarism detection), as well as AI detection tools.
We tested Turnitin’s PlagScan vs. Originality.ai for global plagiarism: 15% threshold: Originality.ai 99.5% accuracy vs. PlagScan, with 98%.
On tests for complex types of plagiarism, like paraphrasing, Originality.ai continued to outperform PlagScan with 41% accuracy compared to PlagScan at 22.5% (5% threshold).
The key insight? Originality.ai continued to show exceptional performance even against a popular tool like PlagScan. Read more in our full plagiarism accuracy study.
Note: While Turnitin does offer AI scanning features, it didn’t have an accessible free tool for testing our ChatGPT sample for this article.
Overall, as AI continues to become integrated across industries, it is absolutely essential that you have a tool that can identify not only plagiarism but generative AI text as well.
As such, we highly recommend the Originality.ai plagiarism checker and AI detector.
Gain full clarity and transparency about content before you publish.
Read more:
A plagiarism scanning tool is a tool or platform that can scan your content to identify how similar it is to other content that has already been published, such as in previously published content appearing in web search results.
Plagiarism scanners work by comparing the text that you input with websites, articles, or publications to identify any similarities in wording, structure, and phrasing to previously published content.
For each match found, a plagiarism scanning tool will typically highlight it and provide you with a similarity, match, or plagiarism percentage score.
Keep in mind that not all of these tools work in the same way. While some scan academic databases, others specialize in web-search-based plagiarism detection.
How an AI detector works can vary by brand and model. At Originality.ai, we offer a complete guide on how AI detection works. Check it out to learn more!
AI & Plagiarism Detector for Serious Content Publishers
Originality.ai
64 Hurontario St
Collingwood, Ontario
L9Y 2L6
