Head to head · September 2026 cycle
Humanize AI Pro vs StealthBypass
Humanize AI Pro finished 30.7 points ahead of StealthBypass in the September 2026 cycle, 70.07 to 39.38, ranking #7 against #13 in a field of 14. Humanize AI Pro scored higher on 2 of 5 detectors and 7 of 7 writing categories. StealthBypass came out ahead on consistency across categories (80.7 vs 65.3), Copyleaks (65.1 vs 53.5) and GPTZero (69.3 vs 58.3). The bypass-rate gap, 70.8 to 78.6, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 2 – 3
- Categories
- 7 – 0
- Components
- 3 – 2
Score components
What the overall score is made of: bypass rate weighs 42%, meaning preservation 32%, readability 16%, consistency across categories 10%. Output-quality penalties come off the total. How scoring works →
CIs overlap marks a gap that sits inside both tools' published 95% confidence intervals for that component; it may not survive another cycle.
Detector by detector
Share of each tool's outputs that a detector classified as human-written. StealthBypass took 3 of 5.
Writing categories
Category score per writing context: bypass credit only for real rewrites, blended with the category's own meaning preservation and readability. Small categories swing; the prompt count is shown on each row. How category scores work →
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
Humanize AI Pro
12 wins- Penalties Score None vs −23.0
- Meaning preservation Score 74.7 vs 39.5
- Readability Score 61.8 vs 54.1
- Originality.ai Detector 86.8 vs 58.5
- Winston AI Detector 70.2 vs 56.3
- Marketing Copy Category 76.7 vs 18.9
- Blog Post Category 76.0 vs 28.2
- Academic Essay Category 82.5 vs 39.9
- Discussion Board Category 81.2 vs 42.8
- Application Essay Category 60.4 vs 24.5
- and 2 more
StealthBypass
5 wins- Consistency Score 80.7 vs 65.3
- Bypass rate Score 78.6 vs 70.8
- Copyleaks Detector 65.1 vs 53.5
- GPTZero Detector 69.3 vs 58.3
- ZeroGPT Detector 84.4 vs 74.0
Questions people ask
Is Humanize AI Pro better than StealthBypass?
Humanize AI Pro finished 30.7 points ahead of StealthBypass in the September 2026 cycle, 70.07 to 39.38, ranking #7 against #13 in a field of 14. Humanize AI Pro scored higher on 2 of 5 detectors and 7 of 7 writing categories. Both tools ran the same 33 prompts, scored by the same 5 detectors, under methodology v1.2.0; every input, output and verdict is published.
Which bypasses AI detectors better, Humanize AI Pro or StealthBypass?
StealthBypass posted the higher bypass rate, 78.6 vs 70.8, and scored higher on 3 of 5 detectors. Humanize AI Pro led on Originality.ai and Winston AI; StealthBypass led on GPTZero, Copyleaks and ZeroGPT. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.
Do Humanize AI Pro and StealthBypass keep the original meaning?
Humanize AI Pro preserved meaning better, 74.7 vs 39.5 on our 0–100 similarity scale. On readability, Humanize AI Pro rated higher, 61.8 vs 54.1. Penalties this cycle: Humanize AI Pro None, StealthBypass −23.0.