AI Humanizer BenchmarkLeaderboard / Compare / GPTinf vs SmartHumanizer
Head to head · September 2026 cycle
GPTinf vs SmartHumanizer
SmartHumanizer finished 6.5 points ahead of GPTinf in the September 2026 cycle, 84.80 to 78.30, ranking #2 against #4 in a field of 11. SmartHumanizer scored higher on 3 of 7 detectors and 7 of 7 writing categories. GPTinf came out ahead on Readability (76.7 vs 75.7), Copyleaks (57.6 vs 15.2), Winston AI (63.0 vs 51.0). The bypass-rate gap, 79.9 to 85.3, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 4 – 3
- Categories
- 0 – 7
- Components
- 1 – 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
CIs overlap marks a gap that sits inside both tools' 95% confidence intervals for bypass rate; it may not survive another cycle.
Detector by detector
Share of each tool's outputs that a detector classified as human-written. GPTinf took 4 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.
GPTinf
5 wins- Readability Score76.7 vs 75.7
- Copyleaks Detector57.6 vs 15.2
- Winston AI Detector63.0 vs 51.0
- ZeroGPT Detector85.2 vs 82.6
- Grammarly Detector87.6 vs 86.9
SmartHumanizer
13 wins- Meaning preservation Score87.6 vs 75.7
- Consistency Score88.3 vs 82.2
- Bypass rate Score85.3 vs 79.9
- Originality.ai Detector78.2 vs 33.8
- QuillBot Detector94.2 vs 84.9
- GPTZero Detector71.0 vs 69.8
- Business email Category75.6 vs 61.8
- Marketing copy Category89.2 vs 81.7
- Blog post Category82.4 vs 75.0
- News article Category79.3 vs 73.2
- Discussion board Category88.3 vs 82.9
- Academic essay Category89.8 vs 85.3
- Application essay Category83.3 vs 79.5
Questions people ask
Is GPTinf better than SmartHumanizer?
SmartHumanizer finished 6.5 points ahead of GPTinf in the September 2026 cycle, 84.80 to 78.30, ranking #2 against #4 in a field of 11. SmartHumanizer scored higher on 3 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, GPTinf or SmartHumanizer?
SmartHumanizer posted the higher bypass rate, 85.3 vs 79.9, and scored higher on 3 of 7 detectors. GPTinf led on Winston AI, ZeroGPT, Grammarly and Copyleaks; SmartHumanizer led on GPTZero, Originality.ai and QuillBot. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.
Do GPTinf and SmartHumanizer keep the original meaning?
SmartHumanizer preserved meaning better, 87.6 vs 75.7 on our 0–100 similarity scale. On readability, GPTinf rated higher, 76.7 vs 75.7. Penalties this cycle: GPTinf None, SmartHumanizer None.