plagiarism AI tools

Winston AI

Freemium

An AI content detector and plagiarism checker with sentence-level reports.

Turnitin

Paid

The academic integrity platform with plagiarism checking and AI writing detection for schools.

Copyleaks

Freemium

Plagiarism and AI content detection used by schools and enterprises worldwide.

Originality.ai

Paid

AI detection and plagiarism checking built for publishers, marketers and SEO teams.

GPTZero

Freemium

One of the first AI text detectors, widely used by teachers and publishers.

Prepostseo

Freemium

A collection of writing and SEO tools including a paraphraser, plagiarism checker and summarizer.

Trinka

Freemium

A grammar checker built for academic and technical writing.