Last updated 06-29-2026
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Pangram Labs
Pangram Labs is an AI content detection platform that identifies text written by large language models such as ChatGPT, Claude, Gemini, Grok, and Llama. Paste text, upload files (PDF, DOCX, RTF), or scan through browser extensions and LMS integrations to get a prediction score, segment-level highlights, and optional plagiarism matches.
The product targets educators, publishers, content moderators, and developers who need to verify authorship at scale. Pangram reports 99.98% detection accuracy with third-party validation from researchers at the University of Chicago and University of Maryland. Its false positive rate is stated as 1 in 10,000 on aggregate public datasets.
Founded in Brooklyn in 2024 by Stanford graduates Max Spero (ex-Google, Nuro) and Bradley Emi (ex-Tesla Autopilot, Absci), Pangram builds proprietary detection models rather than wrapping open-source classifiers. The platform supports 20+ languages, offers a Python SDK and REST API, and integrates with Canvas, Google Classroom, Moodle, Blackboard, Brightspace, and Schoology.
Flags text from ChatGPT, Claude, Gemini, Grok, Llama, and other frontier models with 99.98% stated accuracy
Highlights which portions of a document are fully AI-generated versus AI-assisted edits
Runs plagiarism checks against billions of web pages, academic papers, books, and news articles in one scan
Supports 20+ languages including English, Spanish, French, Arabic, Chinese, Hindi, and Japanese
Chrome and Firefox extensions scan any webpage or Google Docs without leaving your workflow
LMS plugins for Canvas, Google Classroom, Moodle, Blackboard, Brightspace, and Schoology surface scores inside grading tools
Python SDK and REST API with realtime ($0.05/1,000 words) and bulk ($0.04/1,000 words) processing modes
Detects humanized or double-translated AI text designed to evade simpler perplexity-based detectors
Third-party evaluations from University of Chicago and University of Maryland report industry-leading accuracy and low false positive rates.
Segment-level analysis shows how much of a document is AI-generated versus AI-assisted, not just a single score.
Deep LMS integration with Canvas, Google Classroom, Moodle, and other platforms keeps checks inside existing grading workflows.
Multilingual detection across 20+ languages with stated 99%+ accuracy per language.
SOC 2 Type 2 certification and optional zero data retention for enterprise API customers.
Plagiarism detection requires a paid plan and is not included on the free tier.
Free tier limited to 4 scans per day, which may be insufficient for classroom or batch review workloads.
Enterprise and institutional pricing requires contacting sales rather than self-serve checkout.
Is Pangram Labs free to use?
Yes. After signing up, the free plan includes up to 4 AI scans per day with AI assistance detection, file upload, OCR for scanned documents, Chrome extension access, and Google Docs integration. Paid plans add more monthly credits and plagiarism detection on every scan.
How accurate is Pangram Labs?
Pangram states over 99% accuracy and a false positive rate of 1 in 10,000 on aggregate public datasets. Independent researchers at the University of Chicago Booth School of Business and the University of Maryland have published evaluations comparing Pangram favorably to other detectors.
Which AI models does Pangram Labs detect?
Pangram detects writing from ChatGPT (including o1 and o3), Claude, Google Gemini, Grok, Llama, Mistral, DeepSeek, Perplexity, and AI writing assistants such as Grammarly and QuillBot. The company says it also catches output from unreleased models through continuous retraining.
Does Pangram Labs check for plagiarism?
Yes, on paid plans. Pangram compares submitted text against billions of webpages, academic journals, books, and news sources and can run AI detection and plagiarism checks in a single scan from the dashboard.
What languages does Pangram Labs support?
Pangram's multilingual detector covers English, Arabic, Chinese, Czech, Dutch, French, German, Greek, Hindi, Hungarian, Italian, Japanese, Korean, Persian, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish, Ukrainian, Urdu, and Vietnamese.
Does Pangram Labs offer an API?
Yes. Developers can purchase prepaid API credits starting at $25 for 500 credits ($0.05 per 1,000 words for realtime requests, $0.04 per 1,000 words for bulk jobs). A Python SDK is available, and enterprise customers can request higher rate limits and zero data retention options.
Is my data safe when I scan text with Pangram Labs?
Pangram encrypts user data and stores scan history on its servers for your account dashboard. The company states it does not share or sell user data to third parties and is SOC 2 Type 2 certified.
How do schools integrate Pangram Labs?
Institutions can add Pangram through LTI 1.3 integrations with Canvas, Moodle, Blackboard, Brightspace, Schoology, and Google Classroom. Enterprise licenses include unlimited AI and plagiarism checks inside the LMS, usage analytics, and compliance controls.