AI Humanizer BenchmarkLeaderboard / Compare / Undetectable AI vs WriteHuman
Head to head · October 2026 cycle
Undetectable AI vs WriteHuman
On the October 2026 leaderboard, WriteHuman leads Undetectable AI 75.06 to 33.60, a gap of 41.46 points. WriteHuman ranks #7 and Undetectable AI ranks #11 out of 11 tools. WriteHuman scores higher on all 7 detectors and in all 7 writing categories. Undetectable AI is ahead on meaning preservation (72.9 vs 53.2), readability (73.2 vs 71.4) and consistency (97.8 vs 96.0).
- Detectors
- 0 – 7
- Categories
- 0 – 7
- Components
- 3 – 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.
Undetectable AI
3 wins- Meaning preservation Score72.9 vs 53.2
- Readability Score73.2 vs 71.4
- Consistency Score97.8 vs 96.0
WriteHuman
16 wins- Bypass rate Score97.6 vs 1.8
- Penalties Score−4.0 vs −12.0
- Originality.ai Detector99.8 vs 3.8
- Copyleaks Detector93.9 vs 1.5
- Winston AI Detector94.8 vs 3.0
- GPTZero Detector100.0 vs 12.0
- QuillBot Detector92.5 vs 14.5
- Grammarly Detector95.9 vs 20.6
- ZeroGPT Detector92.7 vs 34.5
- Discussion board Category81.3 vs 39.0
- Academic essay Category81.1 vs 39.6
- Application essay Category79.8 vs 44.5
- Marketing copy Category77.7 vs 43.9
- News article Category82.8 vs 51.7
- Business email Category73.9 vs 49.0
- Blog post Category77.2 vs 53.0
Questions people ask
Is Undetectable AI better than WriteHuman?
On the October 2026 leaderboard, WriteHuman has an overall score of 75.06 and Undetectable AI has 33.60, a gap of 41.46 points. WriteHuman ranks #7 and Undetectable AI ranks #11 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, Undetectable AI or WriteHuman?
WriteHuman has the higher bypass rate, 97.6% vs 1.8% for Undetectable AI. It scores higher on all 7 detectors. The two tools' 95% confidence intervals for bypass rate do not overlap.
Do Undetectable AI 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. Undetectable AI scores 72.9 and WriteHuman scores 53.2. On readability, Undetectable AI scores higher, 73.2 vs 71.4. This cycle, Undetectable AI lost 12.0 points to penalties and WriteHuman lost 4.0 points to penalties.