GPTZero is an AI-text identification platform founded in 2023 that distinguishes human-written from AI-generated content. The company's tools detect output from large language models including ChatGPT, GPT-4, Gemini, Llama, and Claude, and provide additional capabilities such as plagiarism checking, writing feedback, and source verification. Its work spans the technical domains of AI-text detection, natural language processing, and large language models.
The platform has reached significant scale, serving over 10 million users, among them 380,000 educators. GPTZero operates primarily in the education and media and information integrity verticals. The company raised $13.5 million in Series A funding.
GPTZero originated from a university senior thesis project and describes itself as mission-driven, aiming to restore information quality and transparency across the internet.
