AI Detector: Free AI Checker for ChatGPT, Claude & Gemini | Pangram

An AI detector that actually works.Detect AI-generated content with remarkable accuracy. Trusted by universities, schools, and enterprises worldwide.Proven the most reliable and accurate AI detector on the market by third party researchers, including the University of Maryland and the University of Chicago.Trusted byGlobal BrandsWhat is an AI detector and should you use one?Yes. Pangram is trained specifically to detect the latest AI models from frontier labs like OpenAI, Anthropic, Google, Meta, DeepSeek, xAI, and more. We benchmark against 26 models (so far) and they are available to see on our model card. We're accurate on 99.7% of these AI-generated samples. We test broadly on every Pangram release and retest on every major model release.Claude Sonnet 599.9%Claude Fable 599.7%GPT-5.499.7%GPT-OSS 120B99.8%DeepSeek V499.6%Llama 3.399.5%Mistral Medium 3.599.6%Kimi K2.699.6%Qwen 3.7 Max99.7%Gemma 499.6%Nemotron 3 Ultra99.7%GLM 5.299.5%Pangram combines cutting-edge AI and comprehensive plagiarism detection to give you the complete picture of text authenticity and get the information you need, all in one place. Pangram also detects AI-generated images.FeaturesHow is Pangram'sAI detector different?There are many AI detectors available, but Pangram is different. It actually works. We also provide advanced features backed by peer-reviewed research that allow users to understand the origin of a piece of writing.Who we areAbout PangramAt Pangram, our mission is to rebuild trust amidst the increase in generative AI content. Founded in Brooklyn, NY, in 2023 by AI researchers from Tesla and Google, we continue to contribute to the research community to increase transparency. If you're interested, read more about our contributions and collaborations.FAQsAI Detection FAQsLooking for answers? Explore common questionsand get the information you need, all in one place.The Pangram blogMore from ourAI experts