Verdict
Unfortunately, my testing of StealthWriter AI revealed that its output is consistently detected by GPTZero as AI-generated text. The writing quality of the humanized text wasn’t bad, but it did leave a lot of room for manual editing and polishing. If the tool were less expensive, then these problems would be easier to live with because there are many settings to play with, and the user experience is great. But at $20-50 per month for paid tiers, StealthWriter is asking for premium pricing while delivering only above-average results.
The Ghost Pro model might be much better, but the company offers no refunds if it does not, which makes upgrading a gamble. Before taking that risk, it is worth knowing that free humanizers exist that already handle both detectors. My Clever AI Humanizer review lays out one such option where the results spoke for themselves without asking for a cent.
Have you tried StealthWriter AI? Share your experience in the comments below.