AI Humanizer Benchmark

Best for / Turnitin

Best AI Humanizer for Turnitin

How we ranked these

Ranked by mean human-probability (the average human-likelihood score Originality.ai gave each tool's outputs). Turnitin offers no public access for automated testing, so Originality.ai, one of the strictest detectors in our panel, is used as a proxy detector.

Last tested
Sample size
33
Methodology
v1.1.0
AI humanizer ranking for the October 2026 cycle, ordered by Score.
RankHumanizerPenaltiesTrendRaw data
1WriteHumanwritehuman.ai99.897.653.271.4-4.0.jsonl
2UndetectedGPTundetectedgpt.ai96.796.077.483.6none.jsonl
3CleverHumanizercleverhumanizer.ai93.885.965.576.8-9.0.jsonl
4GPTinfgptinf.com92.288.768.377.7none.jsonl
5HIX Bypassbypass.hix.ai89.193.577.964.3none.jsonl
6SuperHumanizersuperhumanizer.ai88.283.975.271.0-1.0.jsonl
7AI Humanizeaihumanize.io85.589.566.472.1-1.0.jsonl
8SmartHumanizersmarthumanizer.ai82.978.282.977.5none.jsonl
9StealthGPTstealthgpt.ai62.762.867.780.6-4.0.jsonl
10Undetectable AIundetectable.ai3.81.872.973.2-12.0.jsonl
11ReHumanizerehumanize.io0.01.768.782.7-4.0.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.