AI Humanizer Benchmark

Best for / SEO

Best AI Humanizer for SEO

How we ranked these

Ranked by a weighted average of each tool's category scores, with blog posts and marketing copy counting double. Each category score uses the overall score formula on that category alone, before penalties.

Last tested
Sample size
33
Methodology
v1.1.0

· bypass, meaning, and readability are scoped to this category

AI humanizer ranking for the October 2026 cycle, ordered by Score.
RankHumanizerPenaltiesTrendRaw data
1UndetectedGPTundetectedgpt.ai87.995.776.983.9none.jsonl
2HIX Bypassbypass.hix.ai84.094.177.963.5none.jsonl
3GPTinfgptinf.com80.787.869.278.1none.jsonl
4SmartHumanizersmarthumanizer.ai79.977.882.976.5none.jsonl
5AI Humanizeaihumanize.io79.490.466.071.5-1.0.jsonl
6SuperHumanizersuperhumanizer.ai79.183.575.870.1-1.0.jsonl
7WriteHumanwritehuman.ai78.798.451.770.5-4.0.jsonl
8CleverHumanizercleverhumanizer.ai77.586.566.176.9-9.0.jsonl
9StealthGPTstealthgpt.ai69.464.667.880.9-4.0.jsonl
10Undetectable AIundetectable.ai46.42.174.374.8-12.0.jsonl
11ReHumanizerehumanize.io45.92.069.083.2-4.0.jsonl

11 humanizers · 7 detectors · scores out of 100, higher is better. Click a column to sort; hover a penalty for the breakdown.