AI Humanizer BenchmarkLeaderboard / Compare / ReHumanize vs Undetectable AI
Head to head · September 2026 cycle
ReHumanize vs Undetectable AI
ReHumanize finished 0.8 points ahead of Undetectable AI in the September 2026 cycle, 39.00 to 38.20, ranking #10 against #11 in a field of 11. ReHumanize scored higher on 5 of 7 detectors and 0 of 7 writing categories. Undetectable AI came out ahead on Meaning preservation (89.6 vs 59.2), Consistency (99.6 vs 95.1), GPTZero (6.1 vs 5.7). The bypass-rate gap, 0.2 to 3.7, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 5 – 2
- Categories
- 0 – 7
- Components
- 3 – 2
- Last tested
- 2026-09-03
- Prompts
- 33
- Methodology
- v1.0.0
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' 95% confidence intervals for bypass rate; it may not survive another cycle.
Detector by detector
Share of each tool's outputs that a detector classified as human-written. ReHumanize took 5 of 7.
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.
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
ReHumanize
8 wins- Readability Score81.4 vs 71.7
- Penalties Score−4.0 vs −12.0
- Bypass rate Score3.7 vs 0.2
- Grammarly Detector64.2 vs 18.5
- ZeroGPT Detector32.6 vs 26.5
- QuillBot Detector21.9 vs 16.6
- Copyleaks Detector3.0 vs 0.0
- Originality.ai Detector0.1 vs 0.0
Undetectable AI
11 wins- Meaning preservation Score89.6 vs 59.2
- Consistency Score99.6 vs 95.1
- GPTZero Detector6.1 vs 5.7
- Winston AI Detector0.1 vs 0.0
- Discussion board Category50.8 vs 38.9
- Academic essay Category48.0 vs 38.1
- News article Category51.6 vs 43.4
- Marketing copy Category50.9 vs 44.6
- Application essay Category47.8 vs 42.0
- Blog post Category52.9 vs 47.2
- Business email Category50.9 vs 47.1
Questions people ask
Is ReHumanize better than Undetectable AI?
ReHumanize finished 0.8 points ahead of Undetectable AI in the September 2026 cycle, 39.00 to 38.20, ranking #10 against #11 in a field of 11. ReHumanize scored higher on 5 of 7 detectors and 0 of 7 writing categories. Both tools ran the same 33 prompts, scored by the same 7 detectors, under methodology v1.0.0; every input, output, and verdict is published.
Which bypasses AI detectors better, ReHumanize or Undetectable AI?
ReHumanize posted the higher bypass rate, 3.7 vs 0.2, and scored higher on 5 of 7 detectors. ReHumanize led on Originality.ai, ZeroGPT, Grammarly, QuillBot and Copyleaks; Undetectable AI led on GPTZero and Winston AI. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.
Do ReHumanize and Undetectable AI keep the original meaning?
Undetectable AI preserved meaning better, 89.6 vs 59.2 on our 0–100 similarity scale. On readability, ReHumanize rated higher, 81.4 vs 71.7. Penalties this cycle: ReHumanize −4.0, Undetectable AI −12.0.