Penlify
Penlify is an AI humanizer independently benchmarked by HumanizerBench. It ranked #14 of 14 in the September 2026 cycle with an overall score of 36.57/100, our composite measure of how reliably it evades AI detectors while preserving the original meaning and readability.
- 36.57 /100
- overall score
- 0.0 %
- median detector bypass rate
- #14 of 14
- rank, September 2026
- last tested
33 prompts 7 writing categories 5 AI detectors methodology v1.2.0
Detector Bypass Rates
Percentage of runs classified as human-written by each detector.
Performance by Category
Category score across writing contexts: bypass credit only for real rewrites, blended with each category's meaning and readability. How it's computed
Evidence: every run
Every prompt Penlify was run on in September 2026, and how each of the 5 detectors scored the output. Green: the detector called it human-written. Red: it was caught.
0 of 33 outputs passed all 5 detectors; 32 were caught by at least one, 1 run returned nothing scoreable. 32/33 runs completed.
| Prompt | GPT GPTZero | Win Winston AI | Zero ZeroGPT | Copy Copyleaks | Orig Originality.ai | Median | Recording |
|---|---|---|---|---|---|---|---|
| Argumentative Essay · GPT-5.5 | caught | caught | passed | caught | caught | 0.00 | |
| Discussion Post · Gemini 3.5 Flash | caught | caught | passed | caught | caught | 0.00 | |
| Personal Statement · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Discussion Post · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| News Article · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Product Desc · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Cover Letter · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Personal Statement · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Business Email · Gemini 3.5 Flash | caught | caught | passed | caught | caught | 0.00 | |
| Lit Review · Gemini 3.5 Flash | caught | caught | passed | caught | caught | 0.00 | |
| Discussion Post · GPT-5.5 | caught | caught | passed | caught | caught | 0.00 | |
| Argumentative Essay · Gemini 3.5 Flash | caught | caught | passed | caught | caught | 0.00 | |
| Landing Copy · Gemini 3.5 Flash | caught | caught | passed | caught | caught | 0.00 | |
| Argumentative Essay · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Lit Review · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Howto Blog · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Product Desc · Gemini 3.5 Flash | caught | caught | caught | caught | caught | 0.00 | |
| Lit Review · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Personal Statement · Gemini 3.5 Flash | caught | caught | caught | caught | caught | 0.00 | |
| Landing Copy · GPT-5.5 | caught | caught | passed | caught | caught | 0.00 | |
| Cover Letter · Gemini 3.5 Flash | caught | caught | caught | caught | caught | 0.00 | |
| Cover Letter · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Landing Copy · Claude Sonnet 5 | caught | caught | passed | caught | caught | 0.00 | |
| News Article · Gemini 3.5 Flash | caught | caught | caught | caught | caught | 0.00 | |
| Listicle Blog · GPT-5.5 | Tool unavailable | n/a | |||||
| Business Email · GPT-5.5 | caught | caught | passed | caught | caught | 0.00 | |
| Listicle Blog · Gemini 3.5 Flash | caught | caught | caught | caught | caught | 0.00 | |
| Product Desc · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Listicle Blog · Claude Sonnet 5 | caught | caught | passed | caught | caught | 0.00 | |
| Howto Blog · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Business Email · Claude Sonnet 5 | caught | caught | passed | caught | caught | 0.00 | |
| Howto Blog · Gemini 3.5 Flash | caught | caught | caught | caught | caught | 0.00 | |
| News Article · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Detector rate (mean human-likelihood) | 0.0 hardest | 0.4 | 43.0 | 0.0 | 0.0 | ||
| Runs passed | 0/32 | 0/32 | 12/32 | 0/32 | 0/32 | ||
A dot is green when the detector's human-likelihood score for that run was 0.50 or higher. The detector rate is the mean of that detector's scores across the runs, the same number the detector pages rank by; it is not the count of green dots, which the Runs passed row shows. Hover a dot for the score.
How to read these scores
Each detector returns a human-likelihood on a common 0 to 1 scale, where 1 means it judged the text human-written and 0 means it flagged it as AI. On these pages a verdict counts as passed when that score is at least 0.50, the midpoint of the detector's own scale. That threshold exists only to draw the chips: the bypass rate on the leaderboard is the mean of each test's median score across the 5 detectors, a continuous number, so a tool's pass count and its bypass rate will not be the same figure.
History
Rank and overall score in every cycle Penlify was tested.
| Cycle | Rank | Overall | Bypass |
|---|---|---|---|
| September 2026 | #14 | 36.57 | 0.0% |
Minimum monthly pricing
- Monthly
- $2.99/mo
- Free tier
- Yes
Base paid plan at its month-to-month price, not the annual rate.
Penalties applied this cycle
How penalties work →The overall score shown above already reflects these deductions.
- Meaning drift ×5−5.0
The output's meaning drifted significantly from the original input.
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Penlify is ranked in the September 2026 cycle, so it can embed any of these cards for free, and the live file re-renders every cycle, including when a rank falls. Usage rules →
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