Head to head · September 2026 cycle
Phrasly vs StealthBypass
Phrasly finished 28.2 points ahead of StealthBypass in the September 2026 cycle, 67.58 to 39.38, ranking #8 against #13 in a field of 14. Phrasly scored higher on 4 of 5 detectors and 7 of 7 writing categories. StealthBypass came out ahead on ZeroGPT (84.4 vs 68.0) and consistency across categories (80.7 vs 75.0). The bypass-rate gap, 82.1 to 78.6, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 4 – 1
- Categories
- 7 – 0
- Components
- 4 – 1
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. Phrasly took 4 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.
Phrasly
15 wins- Penalties Score −6.0 vs −23.0
- Meaning preservation Score 66.1 vs 39.5
- Readability Score 65.4 vs 54.1
- Bypass rate Score 82.1 vs 78.6
- Originality.ai Detector 83.4 vs 58.5
- Copyleaks Detector 81.8 vs 65.1
- GPTZero Detector 81.4 vs 69.3
- Winston AI Detector 61.6 vs 56.3
- Application Essay Category 78.1 vs 24.5
- News Article Category 78.3 vs 35.3
- and 5 more
StealthBypass
2 wins- Consistency Score 80.7 vs 75.0
- ZeroGPT Detector 84.4 vs 68.0
Questions people ask
Is Phrasly better than StealthBypass?
Phrasly finished 28.2 points ahead of StealthBypass in the September 2026 cycle, 67.58 to 39.38, ranking #8 against #13 in a field of 14. Phrasly 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, Phrasly or StealthBypass?
Phrasly posted the higher bypass rate, 82.1 vs 78.6, and scored higher on 4 of 5 detectors. Phrasly led on GPTZero, Originality.ai, Copyleaks and Winston AI; StealthBypass led on ZeroGPT. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.
Do Phrasly and StealthBypass keep the original meaning?
Phrasly preserved meaning better, 66.1 vs 39.5 on our 0–100 similarity scale. On readability, Phrasly rated higher, 65.4 vs 54.1. Penalties this cycle: Phrasly −6.0, StealthBypass −23.0.