GPTZero

Best free AI detector - simply paste your text to instantly get an overall AI score and advanced sentence by sentence detection. GPTZero is now a part of Superhuman Learn more AI detector made to Preserve What's Human. GPTZero detects AI content from Claude, ChatGPT, GPT-5, GPT-6, Gemini, and checks writing quality to make every word worth reading. Automatic AI detection on Gmail, Google Docs, Classroom, Social Media, and more Video proof of the writing process. GPTZero in Google Docs Advanced Insights. Go beyond a basic AI checker Find plagiarism. Try our plagiarism detector Improve your writing. Free grammar check and feedback