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Rewrites AI-written text to read as human and scores it against detectors in the same pass
StealthWriter takes text produced by a language model and rewrites it so detection tools stop flagging it, with a built-in detector that scores the draft before and after so you can see whether the pass actually worked. Plans are metered on two axes: how many rewrites you get per day, and how long a single input can be — the free tier caps input at 1,000 words while every paid tier lifts that to 5,000 and raises the daily count. It is operated by AiVantage LLC, a US company with a Wyoming support line, and its changelog was current as of August 2026. The obvious caveat applies: detector evasion is a moving target, and anywhere with an academic-integrity policy treats this as a violation.
Free tier gives 10 rewrites a day capped at 1,000 words per input. Starter is $20/month (50/day), Plus $50/month (150/day), Pro $100/month (350/day) and Scale $400/month (2,000/day); every paid tier allows 5,000 words per input. Pricing is published on the homepage rather than a separate pricing page.
Use tool ↗Pairing the rewriter with its own detector in one screen is the sensible design choice here — you can see the before and after score instead of pasting into a third tool to find out. The tiering is honest about what you are buying: daily rewrite count and input length, nothing hidden. Everything else about this category applies, though: detector scores are not a guarantee, the rewrite flattens voice and sometimes meaning, and using it on assessed work is a disciplinary matter regardless of what the score says.
Watch out: A passing score from this tool's own detector says nothing about what Turnitin, GPTZero or a marker's judgement will conclude — using it on assessed work is an integrity violation whatever the number says.
Side-by-side fact sheets against the competitors our research names — pricing, platforms, API and both verdicts on one page.
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