What is HumanizerBench?

HumanizerBench is an independent monthly benchmark that evaluates leading AI humanizer tools against five AI detectors. It publishes every prompt, raw output, detector verdict, and scoring script to ensure transparency and reproducibility. The benchmark is operated by WriteHuman, which is tested under the same methodology as all other tools.

How to use HumanizerBench?

Visit the website to view the latest leaderboard, compare humanizers by overall score or by specific detector, and explore rankings tailored to use cases like students, SEO, or academic writing. You can also access raw data and scoring scripts via the public GitHub repository to independently verify results.

Core features of HumanizerBench

Monthly rankings of 13 AI humanizers
Tests against 5 detectors: GPTZero, ZeroGPT, Copyleaks, Winston AI, Originality.ai
Publishes all prompts, outputs, detector verdicts, and scoring scripts
Transparent methodology with published scoring formula
Use-case-specific rankings (e.g., students, SEO, academic writing)
Fairness policy and dispute process
Open-source data and scripts on GitHub