Copyleaks
FreemiumAI content and plagiarism detection platform — detect AI writing from ChatGPT, Claude, and human plagiarism.
Free AI content detector — instantly identify ChatGPT, GPT-4, and AI-generated text with sentence-level highlighting.
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ZeroGPT is one of the most widely used free AI detection tools, capable of identifying text generated by ChatGPT, GPT-4, Gemini, and other AI models. It provides an AI percentage score and highlights specific sentences flagged as AI-generated. With no account required for basic use, it’s the go-to quick check for students, teachers, and content reviewers.
Teachers, students, content editors, and HR teams who need a quick, free way to check whether submitted text was written by AI — without any technical setup.