Head to head · September 2026 cycle
SupWriter vs Walter Writes
SupWriter finished 11.1 points ahead of Walter Writes in the September 2026 cycle, 72.80 to 61.70, ranking #5 against #10 in a field of 14. SupWriter scored higher on 3 of 5 detectors and 6 of 7 writing categories. Walter Writes came out ahead on GPTZero (78.3 vs 21.0), business email prompts (54.1 vs 38.7) and readability (60.4 vs 45.7). The bypass-rate gap, 80.3 to 83.9, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 3 – 2
- Categories
- 6 – 1
- Components
- 2 – 3
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. SupWriter 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.
SupWriter
11 wins- Penalties Score None vs −12.0
- Meaning preservation Score 79.0 vs 66.6
- Copyleaks Detector 85.3 vs 59.1
- Winston AI Detector 81.5 vs 67.0
- ZeroGPT Detector 77.9 vs 76.0
- Marketing Copy Category 81.3 vs 45.3
- Academic Essay Category 79.7 vs 47.9
- News Article Category 81.1 vs 49.8
- Application Essay Category 67.1 vs 57.3
- Blog Post Category 78.4 vs 70.8
- and 1 more
Walter Writes
6 wins- Readability Score 60.4 vs 45.7
- Consistency Score 74.9 vs 64.7
- Bypass rate Score 83.9 vs 80.3
- GPTZero Detector 78.3 vs 21.0
- Originality.ai Detector 84.5 vs 78.5
- Business Email Category 54.1 vs 38.7
Questions people ask
Is SupWriter better than Walter Writes?
SupWriter finished 11.1 points ahead of Walter Writes in the September 2026 cycle, 72.80 to 61.70, ranking #5 against #10 in a field of 14. SupWriter scored higher on 3 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 Walter Writes?
Walter Writes posted the higher bypass rate, 83.9 vs 80.3, and scored higher on 2 of 5 detectors. SupWriter led on Copyleaks, Winston AI and ZeroGPT; Walter Writes led on GPTZero and Originality.ai. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.
Do SupWriter and Walter Writes keep the original meaning?
SupWriter preserved meaning better, 79.0 vs 66.6 on our 0–100 similarity scale. On readability, Walter Writes rated higher, 60.4 vs 45.7. Penalties this cycle: SupWriter None, Walter Writes −12.0.