SupWriter vs Undetectable.ai
Head-to-head from the September 2026 cycle benchmark
Last tested
Prompts
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 | SupWriter | Undetectable.ai |
|---|---|---|
| GPTZero | 21.0 | 72.4 |
| Winston AI | 81.5 | 78.9 |
| ZeroGPT | 77.9 | 80.4 |
| Copyleaks | 85.3 | 74.3 |
| Originality.ai | 78.5 | 91.7 |
Minimum monthly pricing
SupWriter
$9.99/mo
- Free tier
- Yes
Undetectable.ai
$19.00/mo
- Free tier
- Yes