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GPTZero is a detection tool that analyzes texts for signs of AI generation. It allows you to paste text or upload documents to view probabilities and paragraph-level indicators, and it offers writing process logging, a browser extension, and document workflows, helping to facilitate further verification around the content rather than directly determining authorship.

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What is GPTZero?

GPTZero provides insights into the likelihood that text was generated by AI, along with specific location clues. Users can paste text or upload files to view an overall score and relevant highlights, then discuss the writing process in conjunction with the original draft and surrounding context.

The official website also highlights features such as Google Docs’ writing‑process replay, records of paste and input modes, browser extensions, as well as tools for plagiarism detection and grammar feedback. AI‑generated content detection, duplicate‑content checks, and writing‑process recording are distinct forms of evidence; a single score should not be interpreted simultaneously as either a plagiarism rate or authorship verification.

The official FAQ explicitly states that the detection is not 100% accurate and should not be used as the sole basis for penalties or final decisions. Results are influenced by text length, language, and text type; the full list of supported languages on the official website highlights English, German, Portuguese, French, and Spanish, but this does not guarantee consistent performance for Chinese or any other language.

Key features

  • Text and Document AI Sign Analysis

  • Probability and textual positional cues

  • Google Docs Writing Process Record

  • Browser extension

  • Documentation and Education Workflow Entry

  • Plagiarism and Grammar Tool Entry

Use cases and audience

Education, publishing, writing, and content moderation professionals

  • Assist in the writing process
  • Finding texts to be checked for editing and proofreading
  • Combine drafts and source content for evaluation.
Input

Text, documents in supported formats, and optional writing process materials

Output

AI Sign Probability, Location Tagging, and Writing Process Report

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