Best duplicate checking tools in 2025

AI Checker

Identify AI-generated text with an intuitive text analyzer.

Plagium AI Detector

Detects text similarities to ensure originality and integrity.

Plagiarismsearch.com

Advanced plagiarism detection for maintaining content originality.

X Detector

Identify whether text is human-written or AI-generated.

GPT-2 Output Detector

A tool to determine if text is human or AI-generated.

DiffChecker

Quickly compare and identify changes in text and documents.

The Newsroom

A digital resource for accurate news gathering and diverse perspectives.

GPTZero.cc

Verify if text is written by humans or generated by machines.

AI Checker Tool

Verify if text is written by humans or generated by AI.

AI Plagiarism Checker

Detects AI-generated text for academic and professional integrity.

Plagiarisma

Verify writing originality quickly and easily with an online scanner.

Litero

Streamlined writing assistant for academic success and efficiency.

ContentDetector

Identify AI-generated text with high accuracy and detailed reports.

Writecream AI Content Detector

Accurate AI content verification for maintaining originality.

Upass

Transforms AI-generated text into human-like writing for students.

wasitai

Quickly verify if an image is real or AI-generated.

Sapling AI Content Detector

Detects AI-generated text for authenticity verification.

Copyleaks

Detects plagiarism and verifies content originality effectively.

Copyleaks - Plagiarism detector

Efficient plagiarism detection and originality verification tool.

AI Content Detector by SEORoast

Determine if text is written by AI or a human.

chatgpt-i18n

AI-driven localization for fast and accurate multilingual translations.

Deepfake Detector

Identify manipulated audio and video with reliable analysis.

AI Content Detector

Identify AI-generated content with high accuracy.

AI Content Detector | Copyleaks

Verify if text is AI-generated or original content easily.

Smodin AI Content Detector

Detects AI-generated text for content authenticity verification.