AI Humanizer BenchmarkLeaderboard / Compare / Undetectable AI vs WriteHuman
Head to head · September 2026 cycle
Undetectable AI vs WriteHuman
WriteHuman finished 43.4 points ahead of Undetectable AI in the September 2026 cycle, 81.60 to 38.20, ranking #3 against #11 in a field of 11. WriteHuman scored higher on 7 of 7 detectors and 7 of 7 writing categories. Undetectable AI came out ahead on Meaning preservation (89.6 vs 76.2), Consistency (99.6 vs 86.4).
- Detectors
- 0 – 7
- Categories
- 0 – 7
- Components
- 2 – 3
- Last tested
- 2026-09-03
- Prompts
- 33
- Methodology
- v1.0.0
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
Detector by detector
Share of each tool's outputs that a detector classified as human-written. WriteHuman took 7 of 7.
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.
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
Undetectable AI
2 wins- Meaning preservation Score89.6 vs 76.2
- Consistency Score99.6 vs 86.4
WriteHuman
17 wins- Bypass rate Score90.4 vs 0.2
- Penalties Score−1.0 vs −12.0
- Readability Score72.4 vs 71.7
- Winston AI Detector82.1 vs 0.1
- QuillBot Detector92.2 vs 16.6
- Grammarly Detector94.2 vs 18.5
- ZeroGPT Detector92.0 vs 26.5
- Copyleaks Detector63.6 vs 0.0
- Originality.ai Detector59.2 vs 0.0
- GPTZero Detector56.5 vs 6.1
- Academic essay Category86.2 vs 48.0
- Application essay Category84.9 vs 47.8
- Marketing copy Category86.2 vs 50.9
- Discussion board Category83.1 vs 50.8
- News article Category79.6 vs 51.6
- Blog post Category80.6 vs 52.9
- Business email Category69.5 vs 50.9
Questions people ask
Is Undetectable AI better than WriteHuman?
WriteHuman finished 43.4 points ahead of Undetectable AI in the September 2026 cycle, 81.60 to 38.20, ranking #3 against #11 in a field of 11. WriteHuman scored higher on 7 of 7 detectors and 7 of 7 writing categories. Both tools ran the same 33 prompts, scored by the same 7 detectors, under methodology v1.0.0; every input, output, and verdict is published.
Which bypasses AI detectors better, Undetectable AI or WriteHuman?
WriteHuman posted the higher bypass rate, 90.4 vs 0.2, and scored higher on 7 of 7 detectors. Undetectable AI led on none; WriteHuman led on GPTZero, Winston AI, Originality.ai, ZeroGPT, Grammarly, QuillBot and Copyleaks. The gap holds outside both tools' 95% confidence intervals.
Do Undetectable AI and WriteHuman keep the original meaning?
Undetectable AI preserved meaning better, 89.6 vs 76.2 on our 0–100 similarity scale. On readability, WriteHuman rated higher, 72.4 vs 71.7. Penalties this cycle: Undetectable AI −12.0, WriteHuman −1.0.