Skip to content
The August 2026 results are in: WriteHuman holds #1, Undetectable AI falls to #8 on quality penalties.Read the full analysis →
HumanizerBench

StealthGPT vs WriteHuman

Head-to-head from the August 2026 cycle benchmark

Last tested
Sample size
33
Methodology
v1.2.0
Winner
76.69
overall
-
Bypass
89.1
Meaning
71.7
Readability
57.8
45.55
overall
â–¼ 4
Bypass
27.5
Meaning
62.9
Readability
70.9

Side-by-side metrics

Detector-level breakdown

Gold cell wins each row.

Detector StealthGPT WriteHuman
GPTZero 52.6 88.4
Winston AI 25.2 83.8
ZeroGPT 46.0 84.7
Copyleaks 24.2 67.1
Originality.ai 20.2 66.5

Minimum monthly pricing

StealthGPT
$25.50/mo
Free tier
No
WriteHuman
$18.00/mo
Free tier
Yes