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.
Text, documents in supported formats, and optional writing process materials
AI Sign Probability, Location Tagging, and Writing Process Report
How to use
- 01
Submit the complete text or document for review by authorized personnel, confirming the language and length.
- 02
View the overall results and highlights, then return to the draft to verify against the source.
- 03
Use the detection score in conjunction with the writing process and human judgment; do not treat it as the final conclusion.
Official website & sources
Updated on 2026-10-25

