DetectGPT review: AI text detector with plagiarism check and reports for teachers, students and writers

What DetectGPT does

Scans pasted or uploaded text and reports whether it looks human-written or AI-generated, with plagiarism checking and shareable certificates.

DetectGPT is a tool for checking whether a piece of text looks human-written or AI-generated. According to its homepage, it covers output from models such as ChatGPT, GPT-4 and Gemini, and it works in 50+ languages. You can paste text into a scan box that accepts 5,000 characters, or upload a file instead.

Beyond the detection result, the site lists a plagiarism checker, fact checking and a readability score. An Original Content Certification feature lets you share analysis links, for example with clients, as proof that your work is original. An AI Content Humanizer is bundled into the plans, and AI image detection is marked as coming soon. The vendor also offers an AI Detection API for organizations that want to build detection into their own tools.

The homepage names three groups it is meant for: teachers checking student work, students verifying their own originality, and writers who want to keep their content unique.

There are three plans, with prices shown per month billed monthly. Essential is $15 per month with 50,000 words per month and 1 user seat. Pro is $29 per month with 250,000 words per month and 3 team members. Team is $59 per month with 500,000 words per month and unlimited team members. Batch detection grows from 10 to 20 to 50 files across the plans. A yearly option is advertised with 6 months free, but no yearly price is shown. A 3,000-word free trial is offered, and the homepage says no credit card is required.

• AI-written text detection
• Plagiarism checker
• Fact checking
• Readability score
• Original Content Certification with shareable links
• Batch file detection
• PDF report generation
• AI Content Humanizer
• AI Detection API

Our take

DetectGPT suits individuals, small teams and educators who want AI detection, a plagiarism check and a shareable certificate in one place, with word allowances stated per plan. The Team plan fits larger groups because it has unlimited team members. It is a weaker fit if you need a permanent free tier, since the pages describe only a 3,000-word trial. Monthly prices are listed, but the yearly price is not, so you cannot compare billing options from the homepage. The homepage also makes more than one accuracy claim, so run the tool on your own sample texts before relying on any single figure.