Best for Originality.ai
Humanizers ranked by their measured bypass rate against Originality.ai.
A subscription AI checker used by publishers, SEO teams, and content teams to detect AI writing and plagiarism.
| Rank Position by Originality.ai bypass rate on this cycle. Learn more → | Humanizer | Originality.ai Bypass Fraction of samples Originality.ai classified as human-written. Learn more → ↓ | Overall Overall score across all detectors, after penalties. Learn more → | Penalties Total points deducted from the overall score when output-quality issues were detected. Hover a row's chip to see why. Learn more → | Last Tested |
|---|---|---|---|---|---|
| 1 | StealthGPT stealthgpt.ai | 78.4 | 61.52 | −10.0×3Penalties applied
| 1d ago |
| 2 | Undetectable.ai undetectable.ai | 66.5 | 72.17 | −10.0Penalties applied
| 1d ago |
| 3 | Phrasly phrasly.ai | 61.8 | 61.47 | −8.0×3Penalties applied
| 1d ago |
| 4 | WriteHuman writehuman.ai | 53.5 | 73.07 | −1.0Penalties applied
| 1d ago |
| 5 | AI Humanize io aihumanize.io | 53.0 | 59.66 | −10.0×2Penalties applied
| 1d ago |
| 6 | Walter Writes walterwrites.ai | 50.9 | 62.84 | −8.0×2Penalties applied
| 1d ago |
| 7 | Stealth Writer stealthwriter.ai | 46.0 | 68.07 | −3.0×2Penalties applied
| 1d ago |
| 8 | Humanize AI Pro www.humanizeai.pro | 43.9 | 70.49 | None | 1d ago |
| 9 | Humbot humbot.ai | 36.8 | 66.42 | −1.0Penalties applied
| 1d ago |
| 10 | Super Humanizer superhumanizer.ai | 34.6 | 54.13 | −5.0×3Penalties applied
| 1d ago |
| 11 | HIX Bypass bypass.hix.ai | 26.4 | 64.84 | None | 1d ago |
| 12 | NoteGPT notegpt.io/ai-humanizer | 0.1 | 44.04 | None | 1d ago |
| 13 | Grammarly www.grammarly.com/ai-humanizer | 0.0 | 53.38 | None | 1d ago |
Higher bypass rate alone ≠ a better tool. See the balanced overall ranking on the main leaderboard .
How scores are computed
See the full methodology →Overall score formula
- Bypass 42% Share of detector tests where the output was classified as human.
- Meaning 32% How well the output preserves the original meaning.
- Readability 16% How clear, fluent, and natural the writing reads, rated by a language model.
- Consistency 10% How evenly the humanizer performs across writing categories.
Penalties (right) are deducted from the overall score. Final score is clamped at 0.
Possible penalties
| Code | Penalty | Max |
|---|---|---|
| Identical to input The tool returned the input mostly unchanged. No real humanization happened. | −2.0 | −10.0 |
| Refusal The tool refused to humanize the input, often due to a content-policy block. | −1.0 | −10.0 |
| Meaning drift The output's meaning drifted significantly from the original input. | −1.0 | −10.0 |
| Length inflation The output ran much longer than the input, a common trick that pads text to dilute the AI signal. | −1.0 | −10.0 |
| Length deflation The output came back much shorter than the input. The rewrite dropped content instead of paraphrasing it. | −1.0 | −10.0 |
Maximum possible total penalty: −50.0 (off 100).
Top 3 for Originality.ai
- StealthGPT 78.4%
- Undetectable.ai 66.5%
- Phrasly 61.8%
Frequently Asked Questions
Which AI humanizer best bypasses Originality.ai?
The top of the ranking on this page is the humanizer with the highest measured bypass rate against Originality.ai in the latest cycle. Bypass rate is the share of test samples Originality.ai classified as human-written after humanization. We re-run this every cycle, so the leader can change month to month — and a tool that tops Originality.ai is not necessarily best overall.
How is the Originality.ai bypass rate measured?
Every humanizer processes the same fixed prompt set, and each output is submitted to Originality.ai. We record the raw verdict for every sample and report the fraction marked human as a 0–100 score. The raw per-sample verdicts are published per cycle in detector-scores.json, so anyone can recompute the number.
Does a high Originality.ai score mean a humanizer is good?
Not on its own. A single detector's bypass rate ignores meaning preservation, readability, and how a tool performs against the other detectors. Use this page to compare Originality.ai specifically, then check the overall leaderboard for the balanced ranking before deciding.