Undetectable AI
Free AI detector trusted by 23 million users for 99%+ accuracy

Undetectable AI is a free AI content detection tool that analyzes text to determine whether it was generated by AI models such as ChatGPT, Gemini, Claude, or Llama. It aggregates results from multiple major AI detectors in a single click and supports over 50 languages. The tool is designed for educators, writers, SEO professionals, and researchers who need to verify content authenticity.
Users paste text into the tool, which runs it through advanced linguistic and pattern-analysis models and aggregates results from multiple AI detectors to return an AI probability score instantly.
educators, writers, SEO professionals, students, and researchers
Background.
- Status
- launched
- Business model
- freemium
Similar projects.
Editorial take on the space this project sits in — momentum signals, adjacent moves, our call on whether the wedge is real. Get pinged when we publish a new read or when the landscape shifts.
Have a take on this space?
Tell us what you’d build differently, where you think the incumbents miss, or what we’ve gotten wrong about this project. Comments + reactions are coming soon.