StealthWriter / SneakAI Review

StealthWriter (also known as SneakAI) positions itself as a premium AI humanizer. At $15+/month, it is one of the more expensive options. Is it worth the price?

What is StealthWriter?

StealthWriter offers AI text humanization with multiple modes: a "ninja" mode for maximum stealth and a "ghost" mode for lighter rewrites. The marketing is aggressive, promising 100% undetectable output.

Test Results

We tested StealthWriter's ninja mode with our standard test essay:

• GPTZero: Passed (15% AI)
• Originality AI: Failed (38% AI)
• ZeroGPT: Passed (10% AI)
• Turnitin: Failed (32% AI)

A 2/4 pass rate at $15/month is disappointing.

Verdict

StealthWriter is overpriced for what it delivers. Our free alternative uses Claude 4.5 Sonnet and consistently outperforms it across all detectors. Try it free.