We took one 1,000-word AI draft and ran it through seven free humanizers people actually recommend. Same input, same detectors (GPTZero plus Originality.ai). We logged the score change, the factual errors introduced, and how long each took.
Two tools dropped our GPTZero score by 30-plus points without inventing facts. Both work by restructuring sentences, not just swapping synonyms — which is exactly what detectors look for. The rest landed in the "slightly different wording, same robotic rhythm" bucket.
Free tools are a solid first pass for low-stakes text. For anything under your name or a client's, a human-trace pass is what actually makes it safe. Our $15 pack turns the routine into prompts; our $45 tier is the human pass itself.
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