AI Humanizer Benchmark

Best for / Quality

Best AI Humanizer for Quality

How we ranked these

Ranked by a quality score: meaning preservation and readability, weighted 2 to 1 as in the overall formula, minus any penalty points (meaning drift, length problems, refusals, unchanged outputs). Detector results are not included.

Last tested
Sample size
33
Methodology
v1.1.0
AI humanizer ranking for the October 2026 cycle, ordered by Score.
RankHumanizerPenaltiesTrendRaw data
1SmartHumanizersmarthumanizer.ai81.178.282.977.5none.jsonl
2UndetectedGPTundetectedgpt.ai79.596.077.483.6none.jsonl
3HIX Bypassbypass.hix.ai73.493.577.964.3none.jsonl
4SuperHumanizersuperhumanizer.ai72.883.975.271.0-1.0.jsonl
5GPTinfgptinf.com71.588.768.377.7none.jsonl
6ReHumanizerehumanize.io69.41.768.782.7-4.0.jsonl
7StealthGPTstealthgpt.ai68.062.867.780.6-4.0.jsonl
8AI Humanizeaihumanize.io67.389.566.472.1-1.0.jsonl
9Undetectable AIundetectable.ai61.01.872.973.2-12.0.jsonl
10CleverHumanizercleverhumanizer.ai60.385.965.576.8-9.0.jsonl
11WriteHumanwritehuman.ai55.397.653.271.4-4.0.jsonl

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