Undetectable.ai vs WriteHuman
Head-to-head from the September 2026 cycle benchmark
Last tested
Sample size
33
Methodology
v1.2.0
71.75
overall
â–² 2
- Bypass
- 82.1
- Meaning
- 82.1
- Readability
- 61.7
Side-by-side metrics
Detector-level breakdown
Gold cell wins each row.
| Detector | Undetectable.ai | WriteHuman |
|---|---|---|
| GPTZero | 72.4 | 71.8 |
| Winston AI | 78.9 | 84.1 |
| ZeroGPT | 80.4 | 77.8 |
| Copyleaks | 74.3 | 86.7 |
| Originality.ai | 91.7 | 91.4 |
Minimum monthly pricing
Undetectable.ai
$19.00/mo
- Free tier
- Yes
WriteHuman
$18.00/mo
- Free tier
- Yes