AI Humanizer BenchmarkLeaderboard / Compare / StealthGPT vs WriteHuman
Head to head · October 2026 cycle
StealthGPT vs WriteHuman
On the October 2026 leaderboard, WriteHuman leads StealthGPT 75.06 to 64.52, a gap of 10.54 points. WriteHuman ranks #7 and StealthGPT ranks #9 out of 11 tools. WriteHuman scores higher on all 7 detectors and in all 7 writing categories. StealthGPT is ahead on meaning preservation (67.7 vs 53.2) and readability (80.6 vs 71.4).
- Detectors
- 0 – 7
- Categories
- 0 – 7
- Components
- 2 – 2
- Last tested
- Prompts
- 33
- Methodology
- v1.1.0
Score components
The overall score weights bypass rate at 42%, meaning preservation at 32%, readability at 16% and consistency across writing categories at 10%. Penalties for output-quality failures are then subtracted. Full scoring formula
Detector by detector
Each figure is one detector's average human-likelihood score across all of a tool's outputs, on a 0–100 scale. Higher means more human. WriteHuman scores higher on all 7 detectors.
Writing categories
Each category score applies the overall-score weights to that category's prompts only. Bypass, meaning preservation and readability are averaged within the category, and the tool's overall consistency score is added. Penalties are not subtracted. Categories with few prompts give less reliable scores, so each row shows its prompt count.
Where each one wins
Measures where one tool is ahead of the other. Ties are left out. Score components come first, then detectors, then categories, with the largest gap first in each group.
StealthGPT
2 wins- Meaning preservation Score67.7 vs 53.2
- Readability Score80.6 vs 71.4
WriteHuman
16 wins- Bypass rate Score97.6 vs 62.8
- Consistency Score96.0 vs 75.9
- GPTZero Detector100.0 vs 41.5
- Winston AI Detector94.8 vs 55.3
- Originality.ai Detector99.8 vs 62.7
- Copyleaks Detector93.9 vs 60.6
- QuillBot Detector92.5 vs 61.3
- Grammarly Detector95.9 vs 69.0
- ZeroGPT Detector92.7 vs 67.4
- Application essay Category79.8 vs 51.2
- Business email Category73.9 vs 59.5
- News article Category82.8 vs 70.8
- Discussion board Category81.3 vs 69.6
- Blog post Category77.2 vs 70.1
- Academic essay Category81.1 vs 78.3
- Marketing copy Category77.7 vs 77.3
Questions people ask
Is StealthGPT better than WriteHuman?
On the October 2026 leaderboard, WriteHuman has an overall score of 75.06 and StealthGPT has 64.52, a gap of 10.54 points. WriteHuman ranks #7 and StealthGPT ranks #9 out of 11 tools. WriteHuman scores higher on all 7 detectors and in all 7 writing categories. Both tools rewrote the same 33 prompts, the same 7 detectors checked every output, and scoring followed methodology v1.1.0. All inputs, outputs and detector verdicts are public.
Which bypasses AI detectors better, StealthGPT or WriteHuman?
WriteHuman has the higher bypass rate, 97.6% vs 62.8% for StealthGPT. It scores higher on all 7 detectors. The two tools' 95% confidence intervals for bypass rate do not overlap.
Do StealthGPT and WriteHuman keep the original meaning?
Meaning preservation measures how close each output stays to its input, using embedding similarity on a 0–100 scale. StealthGPT scores 67.7 and WriteHuman scores 53.2. On readability, StealthGPT scores higher, 80.6 vs 71.4. This cycle, StealthGPT lost 4.0 points to penalties and WriteHuman lost 4.0 points to penalties.