AI Humanizer BenchmarkLeaderboard / Compare / SmartHumanizer vs Undetectable AI
Head to head · September 2026 cycle
SmartHumanizer vs Undetectable AI
SmartHumanizer finished 46.6 points ahead of Undetectable AI in the September 2026 cycle, 84.80 to 38.20, ranking #2 against #11 in a field of 11. SmartHumanizer scored higher on 7 of 7 detectors and 7 of 7 writing categories. Undetectable AI came out ahead on Consistency (99.6 vs 88.3), Meaning preservation (89.6 vs 87.6).
- Detectors
- 7 – 0
- Categories
- 7 – 0
- Components
- 3 – 2
- 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. SmartHumanizer 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.
SmartHumanizer
17 wins- Bypass rate Score85.3 vs 0.2
- Penalties ScoreNone vs −12.0
- Readability Score75.7 vs 71.7
- Originality.ai Detector78.2 vs 0.0
- QuillBot Detector94.2 vs 16.6
- Grammarly Detector86.9 vs 18.5
- GPTZero Detector71.0 vs 6.1
- ZeroGPT Detector82.6 vs 26.5
- Winston AI Detector51.0 vs 0.1
- Copyleaks Detector15.2 vs 0.0
- Academic essay Category89.8 vs 48.0
- Marketing copy Category89.2 vs 50.9
- Discussion board Category88.3 vs 50.8
- Application essay Category83.3 vs 47.8
- Blog post Category82.4 vs 52.9
- News article Category79.3 vs 51.6
- Business email Category75.6 vs 50.9
Undetectable AI
2 wins- Consistency Score99.6 vs 88.3
- Meaning preservation Score89.6 vs 87.6
Questions people ask
Is SmartHumanizer better than Undetectable AI?
SmartHumanizer finished 46.6 points ahead of Undetectable AI in the September 2026 cycle, 84.80 to 38.20, ranking #2 against #11 in a field of 11. SmartHumanizer 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, SmartHumanizer or Undetectable AI?
SmartHumanizer posted the higher bypass rate, 85.3 vs 0.2, and scored higher on 7 of 7 detectors. SmartHumanizer led on GPTZero, Winston AI, Originality.ai, ZeroGPT, Grammarly, QuillBot and Copyleaks; Undetectable AI led on none. The gap holds outside both tools' 95% confidence intervals.
Do SmartHumanizer and Undetectable AI keep the original meaning?
Undetectable AI preserved meaning better, 89.6 vs 87.6 on our 0–100 similarity scale. On readability, SmartHumanizer rated higher, 75.7 vs 71.7. Penalties this cycle: SmartHumanizer None, Undetectable AI −12.0.