Undetectable AI (StealthGPT) is an online tool that both checks and rewrites AI-generated text to make it read more like it was written by a person. It also shows how your content may be scored by popular AI detectors.
AI text detection
- Paste any text to estimate how likely it is AI-written
- Works for essays, articles, reports, and other formats
- Compares results against common detectors (for example, GPTZero)
- Displays clear “AI detected / Human detected” style indicators
Humanizing and polishing
After running a check, you can rewrite the text in one click to reduce typical AI writing patterns. The tool also helps clean up language quality.
- Rephrases sentences to sound more natural
- Improves style and readability
- Fixes spelling and grammar
- Provides quality metrics such as Human Score, Spelling Score, and Grammar Score
Who it’s for
- Copywriters and content teams
- Students and educators
- Marketers and website owners
- Anyone using ChatGPT, Claude, or similar models who wants more natural-sounding output
