ZeroGPT AI Detector

ZeroGPT AI Detector is an online tool for checking whether a text was written by a neural network (ChatGPT, GPT-5, Gemini, Grok, DeepSeek, and others) or by a human. It helps educators, editors, companies, and authors quickly review content for AI generation and potential AI plagiarism.

How it works

The service analyzes your text and highlights sentences that are likely AI-generated. It also shows an “AI likelihood” percentage for each fragment, so you can see both the overall result and the specific parts that may be questionable.

Key features and limits

• Paste text manually or upload a file
• Sentence-level highlighting of suspected AI content
• Per-fragment AI likelihood percentages
• AI plagiarism checking
• Free character limit for basic checks
• Paid plans for larger volumes (up to hundreds of thousands of characters)
• API access for integrating into your own systems, LMS, editorial workflows, or plagiarism tools

Who it’s for

• Schools and universities
• HR teams
• Copywriters and editors
• Website owners and marketers