AI-Content Detector ML vs GPTKit

AI-Content Detector ML is a free browser tool and extension that estimates whether text was generated by AI models. It identifies GPT-3, GPT-4, Claude, Gemini, Llama, and other models, showing color-coded badges and a live confidence display. Supported material includes social posts, articles, comments, and emails. The detector handles German, English, and Vietnamese with automatic language detection, and the extension offers dark mode and a blur effect. Its machine-learning model was trained on 15,234 human and AI samples. The maker reports about 92% accuracy on test data but says results vary by text length, language, and complexity; at least 50 words are recommended, while shorter text may have lower confidence. After an initial download of about 25 MB, analysis runs locally in the browser. The maker says data is not sent to its servers or third parties, with only settings and a whitelist stored locally. Chrome, Firefox, Edge, Opera, and Brave are listed among supported browsers.

GPTKit analyzes submitted text and classifies it as human-written or ChatGPT-generated. It is available through a web interface and an API, with English currently supported. The maker says the detector combines six AI-based methods, was trained on 1 million datasets, and produces authenticity and reality reports. GPTKit reports approximately 93% accuracy based on testing 100K+ human and ChatGPT responses. The first 2048 characters of every request are free, including for guests; the Free Plan allows up to five requests per minute. Unlimited (Personal) costs $5 a month and supports two team members. Unlimited (Team) costs $10 a month, supports eight members, and includes API access. Unlimited (Institution) costs $20 a month, supports 20 members, and includes API access. Team credits can be shared. GPTKit says submitted text is temporarily stored and removed after detection; its policy says absolute security cannot be guaranteed.