Undetectable AI (StealthGPT)

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