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

StealthGPT vs Walter Writes

Head-to-head from the August 2026 cycle benchmark

Last tested
Sample size
33
Methodology
v1.2.0
Winner
60.83
overall
â–¼ 2
Bypass
68.0
Meaning
68.5
Readability
65.3
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 Walter Writes
GPTZero 52.6 69.5
Winston AI 25.2 58.8
ZeroGPT 46.0 72.0
Copyleaks 24.2 46.0
Originality.ai 20.2 56.6

Minimum monthly pricing

StealthGPT
$25.50/mo
Free tier
No
Walter Writes
$12.00/mo
Free tier
Yes