Head to head · September 2026 cycle
SupWriter vs WriteHuman
WriteHuman finished 5.5 points ahead of SupWriter in the September 2026 cycle, 78.29 to 72.80, ranking #1 against #5 in a field of 14. WriteHuman scored higher on 4 of 5 detectors and 6 of 7 writing categories. SupWriter came out ahead on meaning preservation (79.0 vs 72.3) and news article prompts (81.1 vs 78.3). The bypass-rate gap, 80.3 to 90.1, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 0 – 4 (1 tie)
- Categories
- 1 – 6
- Components
- 1 – 3 (1 tie)
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. WriteHuman took 4 of 5, with 1 tied.
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.
SupWriter
2 wins- Meaning preservation Score 79.0 vs 72.3
- News Article Category 81.1 vs 78.3
WriteHuman
13 wins- Consistency Score 82.1 vs 64.7
- Readability Score 56.9 vs 45.7
- Bypass rate Score 90.1 vs 80.3
- GPTZero Detector 71.8 vs 21.0
- Originality.ai Detector 91.4 vs 78.5
- Winston AI Detector 84.1 vs 81.5
- Copyleaks Detector 86.7 vs 85.3
- Business Email Category 56.7 vs 38.7
- Blog Post Category 83.9 vs 78.4
- Application Essay Category 71.6 vs 67.1
- and 3 more
Questions people ask
Is SupWriter better than WriteHuman?
WriteHuman finished 5.5 points ahead of SupWriter in the September 2026 cycle, 78.29 to 72.80, ranking #1 against #5 in a field of 14. WriteHuman scored higher on 4 of 5 detectors and 6 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, SupWriter or WriteHuman?
WriteHuman posted the higher bypass rate, 90.1 vs 80.3, and scored higher on 4 of 5 detectors. 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 SupWriter and WriteHuman keep the original meaning?
SupWriter preserved meaning better, 79.0 vs 72.3 on our 0–100 similarity scale. On readability, WriteHuman rated higher, 56.9 vs 45.7. Neither tool drew an output-quality penalty this cycle.