Leaderboard / Humanizers / Humbot

September 2026 review · rank 8 of 10

Humbot AI detector test results

In the September 2026 HumanizerEval review, Humbot ranked 8 of 10 with a mean strict-bypass rate of 66.4%, behind StealthGPT Super at 96.8%. It cleared all 5 detectors on 0 of 50 texts. Review our full results for the best AI humanizer on the leaderboard page.

Humbot results, September 2026

Website

humbot.ai

Rank

8 of 10

Mean strict bypassThe average of the five detector pass rates: the share of texts each detector called human-written. The leaderboard is ranked by this number.

66.4%

Passed all 5 detectorsTexts that all five detectors called human-written.

0 of 50

Pangram 4.0 strict bypassHow many texts Pangram called human-written (a human score above 50%), with the mean and median human score it gave across all texts.

0 of 50 (0%), mean 1.4%, median 0%

GPTZero 2026-09-13-base strict bypassHow many texts GPTZero called human-written (a human score above 50%), with the mean and median human score it gave across all texts.

31 of 50 (62%), mean 60.8%, median 83.18%

Originality.ai turbo strict bypassHow many texts Originality.ai called human-written (a human score above 50%), with the mean and median human score it gave across all texts.

35 of 50 (70%), mean 69.1%, median 72.15%

ZeroGPT default strict bypassHow many texts ZeroGPT called human-written (a human score above 50%), with the mean and median human score it gave across all texts.

50 of 50 (100%), mean 96.7%, median 100%

Winston AI 5.0 strict bypassHow many texts Winston AI called human-written (a human score above 50%), with the mean and median human score it gave across all texts.

50 of 50 (100%), mean 97.4%, median 99.71%

Factual consistency passShare of outputs where key claims, numbers, citations, and named entities remain accurate and correctly attributed.

22%

Naturalness passShare of outputs where wording is fluent and free of awkward or clunky phrasing.

0%

Syntax integrity passShare of outputs where sentences are grammatically complete and free of disruptive run-ons or punctuation errors.

98%

Stance preservation passShare of outputs where the source's position, tone, and intent are not reversed or distorted.

70%

Mean length ratioOutput word count divided by input word count, averaged across texts. 1.00 is the same length; 1.10 is 10% longer.

1.12

Samples over 1.4× inputOutputs more than 1.4× the input’s word count.

0

Samples under 0.6× inputOutputs shorter than 0.6× the input’s word count.

0

Settings usedThe mode each tool ran on: its strongest advertised setting on the cheapest paid tier.

Advanced

Recompute any of this from scores.csv. Strict bypass means an overall human verdict on a human score above 50%.

What the vendor claims, and what we measured

Claim

“Our advanced algorithms rewrite AI-generated text to mimic natural human patterns, ensuring your content passes even the strictest AI detectors like Turnitin, Originality.ai, GPTZero, ZeroGPT and Copyleaks.” (humbot.ai , retrieved October 1, 2026) A separate line says Humbot empowers you to verify your work against Originality.ai, ZeroGPT, Turnitin, and GPTZero. That line does not state a bypass rate.

Measured

Strict bypass in September 2026: Pangram 0%, GPTZero 62%, Originality.ai 70%, ZeroGPT 100%, Winston AI 100%.

Verdict

Not verified. No bypass rate is stated. In September 2026, strict bypass on the named detectors in this panel was Originality.ai 70%, GPTZero 62% and ZeroGPT 100%. Named detectors count as passed at 90% or above. Turnitin and Copyleaks are not in this panel.

Review history

Head to head

Because every tool saw the same texts, these pages report per-sample agreement, how often each tool bypassed detection on the same input, rather than a difference of averages.

• Humbot vs StealthGPT

  Humbot cleared all 5 detectors on 0 samples where StealthGPT did not; the reverse happened on 46. Both cleared 0.

• Humbot vs WriteHuman

  Humbot cleared all 5 detectors on 0 samples where WriteHuman did not; the reverse happened on 32. Both cleared 0.

• Humbot vs Grubby

  Humbot cleared all 5 detectors on 0 samples where Grubby did not; the reverse happened on 18. Both cleared 0.

• Humbot vs Rephrasy

  Humbot cleared all 5 detectors on 0 samples where Rephrasy did not; the reverse happened on 20. Both cleared 0.

• Humbot vs Undetectable.ai

  Humbot cleared all 5 detectors on 0 samples where Undetectable.ai did not; the reverse happened on 15. Both cleared 0.

• Humbot vs RewriteAI

  Humbot cleared all 5 detectors on 0 samples where RewriteAI did not; the reverse happened on 13. Both cleared 0.

• Humbot vs HIX Bypass

  Humbot cleared all 5 detectors on 0 samples where HIX Bypass did not; the reverse happened on 1. Both cleared 0.

• Humbot vs BypassGPT

  Humbot cleared all 5 detectors on 0 samples where BypassGPT did not; the reverse never happened. Both cleared 0.

• Humbot vs Ryne

  Humbot cleared all 5 detectors on 0 samples where Ryne did not; the reverse never happened. Both cleared 0.