AI Plagiarism Checker

Writing confidence that follows you everywhere

Rephrase until it sounds right

Used by over 10 million teachers and students across more than 100 countries, GPTZero detects AI-generated text across major language models while providing a suite of writing verification tools

Developers get API access for building AI detection into their own apps

Dechecker AI breaks down AI detection differently

ZeroGPT Plus can detect if text came from AI with high accuracy

A content marketer drafts 15 blog posts using AI, then realizes every piece sounds robotic and formulaic

AHelp starts at $4

WriterZen costs nothing for 15 days

StudyPro gives you 500 free credits daily

Pangram Labs makes an AI detector that checks whether text was written by a person or generated by a language model.

Winston AI is an AI content detector and plagiarism checker built for education, SEO, and writing.