Undetectable.ai vs Walter Writes
Head-to-head from the August 2026 cycle benchmark
Last tested
Sample size
33
Methodology
v1.2.0
Winner
61.49
overall
â–¼ 6
- Bypass
- 86.0
- Meaning
- 72.1
- Readability
- 55.2
Side-by-side metrics
Detector-level breakdown
Gold cell wins each row.
| Detector | Undetectable.ai | Walter Writes |
|---|---|---|
| GPTZero | 86.6 | 69.5 |
| Winston AI | 87.5 | 58.8 |
| ZeroGPT | 89.8 | 72.0 |
| Copyleaks | 65.3 | 46.0 |
| Originality.ai | 66.1 | 56.6 |
Minimum monthly pricing
Undetectable.ai
$19.00/mo
- Free tier
- Yes
Walter Writes
$12.00/mo
- Free tier
- Yes