Online Plagiarism and AI Detector

Check documents and academic papers for plagiarism simply and completely online.

Plagius One: A New Plagiarism Detector

Plagius One is the next generation of the traditional Plagius, bringing the recognized efficiency of the desktop version to a fully online format, with no need for installation or complicated configurations.

Retaining its core features, the plagiarism detection service thoroughly examines academic papers and documents, identifying excerpts copied from the internet or other files.

Compatible with various formats, including Word, PDF, OpenOffice, HTML, RTF, and plain text, Plagius One presents detailed reports with found references, frequency of occurrences on the Internet, and percentage of suspected plagiarism.

We are releasing a limited number of accesses, initially by invitation only. Sign up for the waiting list to be notified when your turn comes.

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New V5 model

Greater accuracy in detecting AI-generated text

The V5 model analyzes each paragraph while also considering the context of nearby passages, providing a more consistent assessment throughout the document.

Designed to recognize patterns from different generative AI tools, the new model reduces false positives in human-written text and provides clearer information about each flagged passage.

● Contextual analysis of each paragraph
● Probability that the passage was generated by AI
● Confidence level for each result
● Recognition of signs of AI generation in texts produced by more than 15 models, including recent versions such as Gemini 3.7, GPT 5.6, and Claude 5