Pangram is an AI text detection service from Pangram Labs, which AI researchers founded in Brooklyn, New York, in 2023. It estimates whether a text was produced by AI, how much of a document is AI-generated and whether it has been AI-edited, and it also offers a similarity checker that combines plagiarism checking with AI detection and detection of AI-generated images. It accepts PDF, DOCX and RTF files, up to 100 at a time, and is available through a Chrome extension, a Google Docs add-on, learning management system integrations and an API. Pangram lists educators, universities and publishers among its target users.
Benefits & outcomes
- Pangram reports that in its own testing of its Pangram 4 model, the false positive rate was 0.0041%, about 41 in a million, on more than 2 million human-written documents.
- Pangram reports a false negative rate of 0.34% on about 520,000 AI-generated documents.
- Pangram’s site cites research reported by Chicago Booth Review in which Pangram’s false positive rates ranged from 0% to 0.8% across six genres.
Publisher / company: Pangram Labs
Date of case study: Reported in 2026
Status: Live
Built by: Company
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