Content Quality Test

Ensure your content is authentic, accurate and easy-to-read

Check for plagiarism

Verify the originality of your content by comparing it to billions of web pages in seconds.

Spot AI writing

Make sure your content is written by humans for humans.

Scan for writing errors

Avoid grammar and spelling mistakes.

Why use Plagiarism & AI Checker?

Trained to detect ChatGPT, GPT-4, Claude and Gemini AI models


Ensure content originality

Use ContentVerity’s plagiarism and AI content detection tool to ensure that your writing is original and authentic, whether you create it in-house or outsource.


Improve readability

Check your writing for readability to make sure you communicate your message in a way that’s clear and easy to understand for your audience.


Check for grammar

Keep your writing free of grammar, spelling, and punctuation errors, no matter where it comes from.

Ensure your content is original and plagiarism-free

Safeguard your reputation and enhance the quality of your content by precisely identifying plagiarized material and AI-generated text.

Frequently Asked Questions

How many pages can I check?

You can do 50 checks (texts or URLs) of up to 800 words each on a Free plan and 1000 checks of up to 10.000 words on a Paid plan. To access the Paid plan, visit the Semrush App Center.

How does ContentVerity identifies plagiarism?

ContentVerity performs automatic web searches, comparing your submitted text to previously published web content. Then, it scores your text based on the percentage that matches these published sources.

How does the tool identify AI-generated content?

ContentVerity uses to identify AI-generated content. These models were trained on AI-generated text, which enables them to identify it. However, please note that false positives and negatives may still occur. AI content detection is still being developed, so no tool—including this one—should be used as a standalone guarantee.

What languages are supported?

At the moment, we detect plagiarism for the following languages: English, Albanian, Bulgarian, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, German, Greek, Hungarian, Icelandic, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Swedish, Tagalog, Thai, Turkish, Ukrainian, and Vietnamese.

AI-generated text detection is currently available in English only.

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