GPTZero

GPTZero is the first & leading AI detector tool that will allow you to identify the specific content in a text or document that has been generated by a LLM (Large Language Model), such as ChatGPT. GPTZero was founded in January 2023 and has served more than 10 million users to date & works with 100+ organizations in hiring, publishing, education, legal, and more.

GPTZero works across a wide selection of AI language models, including but doesnt limited to ChatGPT, GPT-5, GPT-4, GPT-3, Llama, Deepseek, Gemini, Claude, & AI services based on those models. Their detector is well-designed for the highest accuracy rate, regardless of which model might have produced the text.

GPTZero is the best AI content checker in education, both for students and teachers who use GPTZero to guide the conversations on academic integrity & writing improvement. GPTZero is well-used in over 3500 colleges & 100s of institutions. They also serve recruiters, copy-writers, publishers, businesses, and marketers where authentic & quality writing truly matters.

GPTZero fully supports German, Portuguese, English, Spanish, and French with industry-leading accuracy. They are constantly used in many other languages & in over 100 countries.

GPTZero's source finder uses AI to detect claims & arguments & pair them with potentially relevant sources. They actively do not recommend AI-generated content due to its unreliability, & filter out the sources that are potentially AI-generated.