About FS AI Detector
Free, fast and privacy-focused AI content detection
Our Story
FS AI Detector was built to solve a real problem: in a world where AI writing tools are everywhere, it's becoming harder to tell what's authentic.
How It Works
FS AI Detector uses Earlybird, a small open model on Hugging Face trained to separate human and AI writing. Per its model card, the training data covers text from models such as:
- ChatGPT / GPT-4
- Claude
- Llama (Meta AI)
- Mistral and similar LLMs
How Accurate Is It?
The model's authors report about 96% accuracy on 100–300 word texts, about 95% on longer texts, and about 89% overall. Under 100 words it drops to roughly 76%. Highly formal human writing can be flagged as AI. Treat every score as an estimate.
Our Mission
- Free — No signup, no payment
- Private — We don't store your text
- Honest — A probability, not a verdict
- Fast — Usually a few seconds
Privacy First
Your text is processed in real time and not stored by us. Read our Privacy Policy.
Disclaimer
FS AI Detector provides an AI probability estimate. It is not legal or academic proof. Always verify manually.
Contact Us
Email: 786.009@proton.me or visit Contact page.