Leaderboard / Humanizers / BypassGPT

September 2026 review · rank 9 of 10

BypassGPT AI detector test results

In the September 2026 HumanizerEval review, BypassGPT ranked 9 of 10 with a mean strict-bypass rate of 64.4%, 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.

BypassGPT results, September 2026

Website

bypassgpt.ai

Rank

9 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.

64.4%

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.

28 of 50 (56%), mean 57.4%, median 67.06%

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.

33 of 50 (66%), mean 67.9%, median 69.48%

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 97.2%, 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 98.0%, median 99.63%

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.

2%

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

94%

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

78%

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.

Enhanced

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

“Ready to bypass AI detection? See how our powerful AI text humanizer effortlessly beats leading platforms like ZeroGPT, GPTZero, and Originality.ai to create perfectly undetectable AI content.” (bypassgpt.ai , retrieved October 1, 2026)

Measured

Strict bypass in September 2026: Pangram 0%, GPTZero 56%, Originality.ai 66%, 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 ZeroGPT 100%, GPTZero 56% and Originality.ai 66%. Named detectors count as passed at 90% or above.

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.

• BypassGPT vs StealthGPT

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

• BypassGPT vs WriteHuman

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

• BypassGPT vs Grubby

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

• BypassGPT vs Rephrasy

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

• BypassGPT vs Undetectable.ai

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

• BypassGPT vs RewriteAI

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

• BypassGPT vs HIX Bypass

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

• BypassGPT vs Humbot

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

• BypassGPT vs Ryne

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