HumanizerEval

Leaderboard / Compare / RewriteAI vs Humbot

September 2026 review · same 50 texts

RewriteAI vs Humbot

In the September 2026 HumanizerEval review, RewriteAI and Humbot rewrote the same 50 English texts. RewriteAI cleared all 5 detectors on 13 of them; Humbot on 0. The difference is mostly Pangram: on 14 samples RewriteAI passed it where Humbot failed, and the reverse never happened. On Winston AI the two were close to even.

Per-sample agreement

Per-sample agreement, September 2026. Counts are out of the 50 shared samples, computed at the 50% human-score threshold. Margin counts the samples only one tool passed, higher count first.
DetectorPassed more oftenMarginBoth passedNeither passed
Pangram 4.0RewriteAI14 to 0036
GPTZero 2026-09-13-baseRewriteAI12 to 0317
Originality.ai turboRewriteAI12 to 3323
ZeroGPT defaultHumbot6 to 0440
Winston AI 5.0Humbot2 to 0480
All 5 detectorsRewriteAI13 to 0037

Every count is computed from scores.csv at build time, not transcribed. “Neither passed” counts the texts that defeated both tools; on Pangram that was 36 of 50 here.

Quality and output discipline

Quality and output discipline, September 2026.
MeasureRewriteAIHumbot
54%22%
40%0%
100%98%
94%70%
1.091.12
20
00
API default, passages of up to 280 words (300-word API limit)Advanced
Websiterewriteai.com humbot.ai

On per-sample quality scores, RewriteAI scored higher on 35 samples, Humbot on 1, and the two tied on 14. RewriteAI’s output was shorter on 31 of 50 samples; mean length ratios were 1.09 and 1.12, or 9% longer than the input and 12% longer than the input respectively.

Where each one outperforms the other

RewriteAI

  • Pangram: passed 14 of 50 against 0, including 14 samples where Humbot failed, against 0 the other way.
  • GPTZero: passed 43 of 50 against 31, including 12 samples where Humbot failed, against 0 the other way.
  • Originality.ai: passed 44 of 50 against 35, including 12 samples where Humbot failed, against 3 the other way.
  • Factual consistency: 54% against 22%.
  • Naturalness: 40% against 0%.
  • Syntax integrity: 100% against 98%.
  • Stance preservation: 94% against 70%.
  • Length: shorter output on 31 of 50 samples, which matters under a word limit.

Humbot

  • Originality.ai: passed 3 samples where RewriteAI failed, even though it was detected more often overall, passing 35 to 44.
  • ZeroGPT: passed 50 of 50 against 44, including 6 samples where RewriteAI failed, against 0 the other way.
  • Winston AI: passed 50 of 50 against 48, including 2 samples where RewriteAI failed, against 0 the other way.

RewriteAI vs Humbot FAQ

Is RewriteAI better than Humbot?

In the September 2026 HumanizerEval review, RewriteAI cleared all 5 detectors on 13 of the 50 shared samples and Humbot on 0. On Winston AI the two were within 6 points of each other. Quality ran 35 samples to 1, with 14 ties.

Which humanizer is best for Pangram, RewriteAI or Humbot?

RewriteAI. In September 2026, RewriteAI passed Pangram on 14 of the 50 shared samples and Humbot on 0. On 14 samples RewriteAI passed where Humbot failed; the reverse never happened. Both failed on 36.

Which humanizer changes the text less?

RewriteAI. It scored higher on per-sample quality on 35 of 50 samples, against 1. RewriteAI’s outputs averaged 1.09× the input length and passed factual consistency on 54%; Humbot’s averaged 1.12× and passed on 22%. On stance preservation the split was 94% to 70%. RewriteAI produced the shorter output on 31 of 50 samples.

More comparisons