GPTZero: AI Detector for Human-Written Content Verification

GPTZero has emerged as the foremost AI detector, excelling in identifying content generated by large language models such as ChatGPT. This tool performs AI detection at the sentence, paragraph, and document levels, showcasing exceptional precision and reliability. Trained on a diverse corpus of human-written and AI-generated texts, GPTZero focuses on English prose, making it an invaluable asset for various sectors, including education, hiring, publishing, and legal. With over 2.5 million users globally and partnerships with over 100 organizations, GPTZero has set the gold standard in AI detection.

More Than Just an AI Detector

Preserve What’s Human

GPTZero goes beyond basic AI detection by incorporating the latest research to identify content from various AI models, including ChatGPT, GPT-4, Google-Gemini, and LLaMa. This advanced tool continuously updates to ensure it stays ahead in the rapidly evolving AI landscape.

Internationally Recognized Leader

GPTZero is internationally recognized for its leadership in AI detection, offering precise and reliable responses to AI-generated content. This tool has established itself as the benchmark for AI detection accuracy and reliability.

The First in Detection

GPTZero holds the distinction of developing the first public open AI detector in 2022. This pioneering effort has positioned GPTZero as the most reliable tool in the market, providing timely assistance when it matters the most.

Results You Can Trust

AI detection transcends mere accuracy. GPTZero was the first to introduce sentence highlighting for interpretability, making its AI reports unique by explaining why certain content was flagged as AI-generated. This feature enhances transparency and user understanding.

Best-In-Class Benchmarking

GPTZero collaborates with Penn State for independent benchmarking, consistently demonstrating best-in-class accuracy and reliability across various AI models. This partnership underscores GPTZero’s commitment to maintaining the highest standards in AI detection.

Cutting-Edge Research

Top PhD and AI researchers from prestigious institutions like Princeton, Caltech, MILA, Vector, and OpenAI work with GPTZero. This collaboration ensures that GPTZero remains at the forefront of AI detection research, providing users with the most up-to-date solutions.

Debiased AI Detection

GPTZero’s research team has worked on Stanford University AI data to address biases in AI detection. The result is the first de-biased AI detection model, launched in July 2023, which provides fair and unbiased AI detection capabilities.

Military-Grade Security

GPTZero upholds the highest data security standards with SOC-2 certifications, meeting rigorous security benchmarks. Users can trust that their data is protected with military-grade security measures.

Millions of Users and a Robust Dashboard

Discover the Detection Dashboard

GPTZero’s dashboard is designed to meet the needs of educators, offering a premium model with high fidelity and interpretability. The dashboard allows for deeper scans, unprecedented levels of AI text analysis, and comprehensive source scanning for plagiarism and copyright checks.

Histories and Reports

Users can easily scan dozens of files at once, organize, save, and download reports, making GPTZero a powerful tool for managing large volumes of documents.

Leading AI Content Detection Technology

GPTZero’s AI detection model contains seven components that process text to determine if it was written by AI. This multi-step approach ensures maximum accuracy with minimal false positives, specializing in detecting content from ChatGPT, GPT-4, Gemini, Claude, and LLaMa models.

Quantify AI with Deep Scan

New and Exclusive Features

GPTZero’s Deep Scan leverages the latest breakthroughs in AI detection research, providing an unprecedented granular view and understanding of results. The tool offers color-coded highlights to distinguish between AI and human sections of writing, along with statistical analysis to show how each sentence affects AI probabilities.

Unlock More of GPTZero

Origin Chrome Extension

The Origin Chrome Extension allows users to detect AI content while browsing the internet. This tool also enables the creation of Writing Reports on Google Docs, offering detailed statistics about the writing.


The Writing Report feature provides insights into Google Docs, including writing statistics, AI content detection, and a video of the writing process, making it an excellent tool for educational purposes.


GPTZero offers an easy-to-use API for organizations to integrate AI detection capabilities into their own tools and workflows, enhancing their ability to identify AI-generated content.

Colorful Review Ratings

Accuracy: ⭐⭐⭐⭐⭐

Reliability: ⭐⭐⭐⭐⭐

User Interface: ⭐⭐⭐⭐☆

Security: ⭐⭐⭐⭐⭐

Support: ⭐⭐⭐⭐☆

GPTZero stands out as a premier AI detection tool, offering unparalleled accuracy, reliability, and user-friendly features. Its commitment to cutting-edge research, security, and unbiased detection makes it the go-to solution for anyone seeking to verify the authenticity of content.