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October 2026 review · same 50 texts

Rephrasy vs Phrasly

In the October 2026 HumanizerEval review, Rephrasy and Phrasly rewrote the same 50 English texts. Rephrasy cleared all 6 detectors on 0 of them; Phrasly on 0. The difference is mostly GPTZero: on 15 samples Rephrasy passed it where Phrasly failed, and the reverse happened on 2. On Originality.ai 5.0 the two were close to even.

Per-sample agreement

Per-sample agreement, October 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 4.1Rephrasy11 to 0237
GPTZero 2026-10-07-baseRephrasy15 to 22013
Originality.ai TurboRephrasy11 to 4323
Originality.ai 5.0 model-5.0Tied0 to 0050
ZeroGPT defaultRephrasy6 to 1403
Winston AI 5.0Rephrasy5 to 0450
All 6 detectorsTied0 to 0050

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 37 of 50 here.

Quality and output discipline

Quality and output discipline, October 2026.
MeasureRephrasyPhrasly
32%50%
44%70%
98%98%
62%84%
1.221.10
50
00
v4Standard model, API default (Phrasly Ultra not enabled on the account)
Websiterephrasy.ai phrasly.ai

On per-sample quality scores, Rephrasy scored higher on 8 samples, Phrasly on 27, and the two tied on 15. Phrasly’s output was shorter on 29 of 50 samples; mean length ratios were 1.22 and 1.10, or 22% longer than the input and 10% longer than the input respectively.

Where each one outperforms the other

Rephrasy

  • Pangram: passed 13 of 50 against 2, including 11 samples where Phrasly failed, against 0 the other way.
  • GPTZero: passed 35 of 50 against 22, including 15 samples where Phrasly failed, against 2 the other way.
  • Originality.ai Turbo: passed 43 of 50 against 36, including 11 samples where Phrasly failed, against 4 the other way.
  • Originality.ai 5.0: tied at 0 of 50 but on a higher mean human score, 19.4% to 9.4%. It passed 0 samples where Phrasly failed.
  • ZeroGPT: passed 46 of 50 against 41, including 6 samples where Phrasly failed, against 1 the other way.
  • Winston AI: passed 50 of 50 against 45, including 5 samples where Phrasly failed, against 0 the other way.

Phrasly

  • GPTZero: passed 2 samples where Rephrasy failed, even though it was detected more often overall, passing 22 to 35.
  • Originality.ai Turbo: passed 4 samples where Rephrasy failed, even though it was detected more often overall, passing 36 to 43.
  • ZeroGPT: passed 1 sample where Rephrasy failed, even though it was detected more often overall, passing 41 to 46.
  • Factual consistency: 50% against 32%.
  • Naturalness: 70% against 44%.
  • Stance preservation: 84% against 62%.
  • Length: shorter output on 29 of 50 samples, which matters under a word limit.

Rephrasy vs Phrasly FAQ

Is Rephrasy better than Phrasly?

In the October 2026 HumanizerEval review, Rephrasy cleared all 6 detectors on 0 of the 50 shared samples and Phrasly on 0. On Originality.ai 5.0 the two were within 6 points of each other. Quality ran 8 samples to 27, with 15 ties.

Which humanizer is best for Pangram, Rephrasy or Phrasly?

Rephrasy. In October 2026, Rephrasy passed Pangram on 13 of the 50 shared samples and Phrasly on 2. On 11 samples Rephrasy passed where Phrasly failed; the reverse never happened. Both failed on 37.

Which humanizer changes the text less?

Phrasly. It scored higher on per-sample quality on 27 of 50 samples, against 8. Rephrasy’s outputs averaged 1.22× the input length and passed factual consistency on 32%; Phrasly’s averaged 1.10× and passed on 50%. On stance preservation the split was 62% to 84%. Phrasly produced the shorter output on 29 of 50 samples.

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