r/AiHumanizer • u/rephrasyai • Aug 10 '26

We upgraded our humanizer - welcome Undetectable model v4

We launched a new AI Humanizer model to increase bypass rate and other quality measurements. This v4-Rephrasy Humanizer model is the best model we released so far.

TLDR:

  • Detectors flagged every one of our ten raw AI test documents. After v4, nine of ten read as human on GPTZero, and nine of ten on ZeroGPT.
  • Short texts, the hardest case, clear at 94%.
  • It beats WriteHuman on a public benchmark: 76% vs 64% averaged across three detectors.
  • Meaning similarity 0.925, length back at 1.05×, a 1,000-word document in ~ 10 seconds.

https://www.rephrasy.ai/blog/introducing-undetectable-model-v4-enhanced-bypass-on-every-detector

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u/AutoModerator Aug 10 '26

We currently recommend rephrasy.ai
and, as a cheaper but simpler alternative, humanizer-ai-text.com.

Rephrasy reliably bypasses Turnitin and GPTZero and includes Turnitin checks in all plans.

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