HumanizerBench is operated by WriteHuman. This page summarizes its published July 2026 cycle; we did not run or independently reproduce the tests. HumanizerBench says its inputs, outputs, detector verdicts and scoring code are published for verification. Review the original leaderboard and methodology before treating the scores as evidence.
Full July 2026 AI humanizer leaderboard
The table preserves HumanizerBench's overall ranks. Use the controls to reorder the same 13 tools by a single metric; the displayed overall rank does not change.
| Overall rank | Humanizer | Overall | Bypass rate | Meaning | Readability | Penalties |
|---|---|---|---|---|---|---|
| 1 | WriteHumanLeader | 73.07 | 81.6 | 72.9 | 56.2 | -1.0 meaning drift |
| 2 | Undetectable.ai | 72.17 | 95.7 | 73.0 | 55.9 | -10.0 length inflation |
| 3 | Humanize AI Pro | 70.49 | 70.4 | 74.3 | 60.3 | None |
| 4 | Stealth Writer | 68.07 | 81.2 | 68.5 | 44.5 | -3.0 across 2 types |
| 5 | Humbot | 66.42 | 70.7 | 75.3 | 43.9 | -1.0 length inflation |
| 6 | HIX Bypass | 64.84 | 65.9 | 73.8 | 42.9 | None |
| 7 | Walter Writes | 62.84 | 80.6 | 64.7 | 61.5 | -8.0 across 2 types |
| 8 | StealthGPT | 61.52 | 81.6 | 63.0 | 60.6 | -10.0 across 3 types |
| 9 | Phrasly | 61.47 | 73.4 | 60.9 | 72.1 | -8.0 across 3 types |
| 10 | AI Humanize io | 59.66 | 76.0 | 69.8 | 55.7 | -10.0 across 2 types |
| 11 | Super Humanizer | 54.13 | 42.3 | 73.2 | 67.1 | -5.0 across 3 types |
| 12 | Grammarly | 53.38 | 0.0 | 94.5 | 82.1 | None |
| 13 | NoteGPT | 44.04 | 0.0 | 69.1 | 74.5 | None |
Showing the published overall ranking. Last tested 1 July 2026.
How the overall score is calculated
HumanizerBench combines four dimensions rather than treating detector bypass as the only goal. Penalties are then deducted when outputs show specified quality problems.
What stands out in the July results
Its 73.07 composite score placed first after the benchmark combined all four metrics and deducted a 1-point meaning-drift penalty.
Undetectable.ai recorded 95.7 for bypass rate, but a 10-point length-inflation penalty reduced its overall result to second place.
Grammarly led meaning and readability at 94.5 and 82.1, while its published bypass rate was 0.0. One metric cannot describe the whole result.
WriteHuman and Undetectable.ai were separated by less than one overall point, so settings, text type and acceptable rewrite tradeoffs still matter.
Why the penalty column matters
A high detector score can look attractive even when a rewrite has changed the message or padded the text. HumanizerBench applies deductions for severe meaning drift, length inflation, length deflation, near-identical output and refusals.
What this leaderboard cannot guarantee
This is a fixed July 2026 snapshot using specific paid plans, settings, prompts, detectors and scoring rules. A different paragraph, tool setting, detector update or future benchmark cycle may produce a different result.
HumanizerBench is also operated by WriteHuman, the tool ranked first. Its published repository and methodology improve auditability, but readers should still account for that relationship and avoid treating the ranking as independent endorsement.
Frequently asked questions
Is HumanizerBench independent?
No. HumanizerBench states that it is operated by WriteHuman. It also publishes methodology and cycle data so the calculations can be examined and reproduced.
Does first place mean WriteHuman is best for every task?
No. It ranked first on the July 2026 composite score, but other tools led individual metrics. The right choice depends on meaning, readability, editing needs and acceptable tradeoffs.
What does bypass rate mean here?
HumanizerBench describes it as the aggregate human-likelihood result across five commercial detectors for the tested outputs. It is not a promise for future text.
How often will this page change?
This page is a fixed July 2026 snapshot. We will update it manually when we review a newer published benchmark cycle.
Can any AI humanizer guarantee a detector result?
No. Detectors, models and text inputs change. Always review meaning, facts, policy and final writing quality instead of relying on one score.