Stealth AI (by PassMe AI)

Stealth AI (reached at stealthai.ai, which now redirects to passme.ai/stealth-ai) is the undetectable-writing product built by PassMe AI. You paste in text — for example something produced by ChatGPT, Gemini, Claude or another model — and the tool rewrites it with a language model trained on large volumes of human writing, with the goal of producing output that scores as human on popular AI detectors such as GPTZero, Originality.ai, Turnitin and Copyleaks.

The product combines two ideas: humanizing AI text so a detector is less likely to flag it, and cleaning up that text so it stays readable and plagiarism-free. PassMe AI markets it to students, freelance writers, marketers and business professionals, and it supports more than 50 languages.

Pricing is freemium: a free tier handles a small monthly word allowance, while paid plans raise per-request and monthly word limits up to an unlimited plan. Because AI-detection tools change frequently, real-world results vary, and users should treat "undetectable" claims as marketing rather than a guarantee.