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The September 2026 results are in: WriteHuman holds #1, and newcomer SupWriter debuts at #5.Read the full analysis →
HumanizerBench

Head to head · September 2026 cycle

StealthBypass vs WriteHuman

WriteHuman finished 38.9 points ahead of StealthBypass in the September 2026 cycle, 78.29 to 39.38, ranking #1 against #13 in a field of 14. WriteHuman scored higher on 4 of 5 detectors and 7 of 7 writing categories. StealthBypass came out ahead on ZeroGPT (84.4 vs 77.8). The bypass-rate gap, 78.6 to 90.1, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.

39.38 /100
overall score
#13 /14
rank -
+38.91
WriteHuman leads →
Detectors
1 4
Categories
0 7
Components
0 5
78.29 /100
overall score
#1 /14
rank -
Last tested
Prompts
33
Methodology
v1.2.0

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 →

Bypass rate CIs overlap WriteHuman by 11.5
78.6 90.1
Meaning preservation WriteHuman by 32.8
39.5 72.3
Readability WriteHuman by 2.9
54.1 56.9
Consistency WriteHuman by 1.4
80.7 82.1
Penalties fewer is better WriteHuman by 23.0
−23.0 None

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. WriteHuman took 4 of 5.

GPTZero WriteHuman by 2.6
69.3 71.8
Originality.ai WriteHuman by 32.9
58.5 91.4
Copyleaks WriteHuman by 21.7
65.1 86.7
Winston AI WriteHuman by 27.8
56.3 84.1
ZeroGPT StealthBypass by 6.5
84.4 77.8

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 →

Academic Essay Application Essay Blog Post Business Email Marketing Copy Discussion Board News Article Academic Essay: StealthBypass 39.9 · WriteHuman 84.1 Application Essay: StealthBypass 24.5 · WriteHuman 71.6 Blog Post: StealthBypass 28.2 · WriteHuman 83.9 Business Email: StealthBypass 26.0 · WriteHuman 56.7 Marketing Copy: StealthBypass 18.9 · WriteHuman 82.1 Discussion Board: StealthBypass 42.8 · WriteHuman 78.2 News Article: StealthBypass 35.3 · WriteHuman 78.3
StealthBypass WriteHuman Outer ring = 100
Academic Essay 6 prompts WriteHuman by 44.2
39.9 84.1
Application Essay 6 prompts WriteHuman by 47.1
24.5 71.6
Blog Post 6 prompts WriteHuman by 55.7
28.2 83.9
Business Email 3 prompts WriteHuman by 30.7
26.0 56.7
Marketing Copy 6 prompts WriteHuman by 63.2
18.9 82.1
Discussion Board 3 prompts WriteHuman by 35.4
42.8 78.2
News Article 3 prompts WriteHuman by 43.0
35.3 78.3

Where each one wins

Every measure above that one tool won outright, largest margin first within each group.

StealthBypass

1 win
  • ZeroGPT Detector 84.4 vs 77.8

WriteHuman

16 wins
  • Penalties Score None vs −23.0
  • Meaning preservation Score 72.3 vs 39.5
  • Bypass rate Score 90.1 vs 78.6
  • Readability Score 56.9 vs 54.1
  • Consistency Score 82.1 vs 80.7
  • Originality.ai Detector 91.4 vs 58.5
  • Winston AI Detector 84.1 vs 56.3
  • Copyleaks Detector 86.7 vs 65.1
  • GPTZero Detector 71.8 vs 69.3
  • Marketing Copy Category 82.1 vs 18.9
  • and 6 more

Questions people ask

Is StealthBypass better than WriteHuman?

WriteHuman finished 38.9 points ahead of StealthBypass in the September 2026 cycle, 78.29 to 39.38, ranking #1 against #13 in a field of 14. WriteHuman scored higher on 4 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, StealthBypass or WriteHuman?

WriteHuman posted the higher bypass rate, 90.1 vs 78.6, and scored higher on 4 of 5 detectors. StealthBypass led on ZeroGPT; WriteHuman led on GPTZero, Originality.ai, Copyleaks and Winston AI. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.

Do StealthBypass and WriteHuman keep the original meaning?

WriteHuman preserved meaning better, 72.3 vs 39.5 on our 0–100 similarity scale. On readability, WriteHuman rated higher, 56.9 vs 54.1. Penalties this cycle: StealthBypass −23.0, WriteHuman None.