GPTZero

GPTZero Inc. offers software that analyzes text and documents for signs of AI-generated writing, with overall and sentence-level results. Its product suite also includes plagiarism, grammar, citation, fact, and hallucination checks, plus authorship and writing-process tools. Available through its website, browser extension, integrations, API, and Zapier, GPTZero serves education and other writing-intensive sectors. Detection results are indicators for review, not definitive proof of authorship.