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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

Grammarly 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
52.91
overall
â–² 1
Bypass
0.0
Meaning
94.3
Readability
79.5

Side-by-side metrics

Detector-level breakdown

Gold cell wins each row.

Detector Grammarly WriteHuman
GPTZero 1.9 88.4
Winston AI 0.1 83.8
ZeroGPT 13.7 84.7
Copyleaks 0.0 67.1
Originality.ai 0.0 66.5

Minimum monthly pricing

Grammarly
$30.00/mo
Free tier
Yes
WriteHuman
$18.00/mo
Free tier
Yes