Plagiarism Checker — AI tools

Copyleaks Verified Plagiarism Checker

AI-powered plagiarism detection and AI content identification — scan text, documents, and code for originality and authenticity.

Plagramme Verified Plagiarism Checker

AI and plagiarism detection tool — check documents for originality and AI-generated content across 100+ languages.

Plagiarismsearch.com Verified Plagiarism Checker

Professional plagiarism checker — scan documents against billions of web pages and academic sources for originality verification.

ZeroGPT Verified Content Detector

AI text detector that analyzes writing to identify content from ChatGPT, GPT-5, Gemini, and other LLMs

GPTZero Verified Content Detector

AI content detector — check text for AI generation from ChatGPT, Gemini, Claude, and other models.

Originality.AI Verified Content Detector

AI content detector and plagiarism checker — verify if text is human-written or AI-generated.

NoPlagio Verified Plagiarism Checker

AI-powered plagiarism and AI content detector — check documents against academic databases and web sources in 129 languages.

Isgen Verified Content Detector

AI content detector that analyzes text for ChatGPT, Gemini, Claude and other AI models with sentence-level accuracy

Plagiarismcheck.org Verified Plagiarism Checker

AI-powered plagiarism and AI content detector — check text originality, verify authorship, and trace AI-generated writing.

Textguard Verified Content Detector

AI text detector and paraphraser — check originality and rewrite content while preserving meaning

DetectGPT Verified Content Detector

AI detector that checks if text was written by a human or AI models like ChatGPT, GPT-4, and Gemini.

EssayCheck.ai Verified Content Detector

AI essay checker — detect AI-generated text, grammar errors, and plagiarism in seconds

Uncheck AI Verified Undetectable AI

AI text humanizer and detector — paste AI-generated content, get undetectable human-like text that bypasses major AI detectors

CopyFind Verified Plagiarism Checker

Free online tool to check text for plagiarism and AI-generated content — supports file uploads and paraphrasing detection.

Winston AI Verified Content Detector

AI content detector that identifies ChatGPT, Gemini, and other AI-generated text with 99.98% accuracy

Plag Verified Plagiarism Checker

AI-powered plagiarism and AI content detector — check documents against web sources and academic databases in 129 languages.

AI Plagiarism Checker Verified Plagiarism Checker

Free online plagiarism detector — paste text or upload a file to check against billions of sources in seconds

AI Detector Writer Verified Content Detector

Free AI content detector — paste text or upload files to instantly check for AI-generated content with highlighted results

AI Detector Verified Content Detector

Free AI content detector — check text for AI similarity percentage from ChatGPT, Gemini, Claude, and other models.

DetectMy Verified Content Detector

Free AI content detector — paste text or upload a file to get a sentence-level analysis of AI vs. human writing.

OmniDetect Verified Content Detector

Checks text for AI generation using three different detection engines at once for a more reliable result.

AI Text Detector - Detect ChatGPT with iPhone or Android Camera Verified Content Detector

Mobile app that detects AI-generated text, humanizes it, and checks for plagiarism — all from your phone.

PaperCheck Verified Plagiarism Checker

Run your paper through Turnitin's AI and similarity detector before submitting — get the official report in minutes.

SpeedAI Verified Undetectable AI

AI-powered tool for academic writers — detects AI-generated text and rewrites content to reduce plagiarism and AI detection scores.