AI Humanizer BenchmarkAbout AI Humanizer Benchmark
AI Humanizer Benchmark is an independent monthly benchmark of every major AI humanizer on the market. Each cycle, we run the same set of prompts through every tested humanizer, submit each humanized output to 7 commercial AI detectors, score the results with a published deterministic formula, and ship the raw data (inputs, outputs, detector scores, scoring script) alongside the leaderboard.
The market for AI humanizers is noisy. Every vendor claims the highest bypass rate against the most detectors with the best meaning preservation. We exist to give that market one credible, auditable reference: the same inputs, the same detectors, the same scoring, every month. If we say a humanizer ranks third, you can download the cycle and reproduce the rank yourself. The longer version of why we built this goes into more depth.
We are operated by the team behind UndetectedGPT, which sells one of the humanizers on this leaderboard. We disclose that here, on the homepage, in our methodology, and in our terms, and we hold UndetectedGPT to exactly the same methodology, scoring, and penalty rules as every other tested humanizer. Total transparency is the only credibility play that works when the operator is also a competitor.
Operator
AI Humanizer Benchmark is operated by the team behind UndetectedGPT. UndetectedGPT builds an AI humanizer for writers, students, and marketing teams. Editorial control of the benchmark (what we test, how we score, what we publish) is independent of UndetectedGPT's commercial product team.
Anti-bias commitments
- UndetectedGPT is tested using the same methodology and scoring as every other humanizer.
- The scoring script is public and deterministic.
- We do not adjust rankings outside the published methodology.
- We do not accept payment for placement.
- We do not exclude tools because they outperform UndetectedGPT, and we do not run private tests off the record.
The full version of these commitments, and how to dispute a result, is on the fairness page.
Contact
- Press: contact@aihumanizerbenchmark.com
- Partnerships: contact@aihumanizerbenchmark.com
- Disputes and corrections: submit a dispute (see the fairness page for the full process)
Open source
All inputs, outputs, detector scores, and the scoring script live in our public repository: https://github.com/AIHumanizerBenchmark/AIHumanizerBenchmark.