StealthBypass
StealthBypass ranked #13 of 14 in the September 2026 cycle with an overall score of 39.38/100, after losing 23 points to penalties for meaning drift, length deflation, identical to input and length inflation. ZeroGPT passed its output most often (84.4%), and Winston AI passed it least often (56.3%). It did best on discussion board posts and worst on marketing copy.
StealthBypass is a standalone AI humanizer and writing editor that revises text for clarity, flow and tone. It offers writing styles such as formal, professional and conversational, and returns several rewrites to compare. The free plan allows three rewrites a month of up to 300 words each.
- Overall score
- 39.38/100
- Detector bypass
- 78.6%
- Overall rank
- #13of 14
- Prompts tested
- 33
Detector Bypass Rates
Each detector's average human-likelihood score on this tool's outputs, where 100 means every output was scored as human.
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
Strengths
None this cycle.
Weaknesses
- Meaning preservation of 39.5, the lowest this cycle (field median 73.7)
- Lost 23 points to penalties for meaning drift, length deflation, identical to input and length inflation
- Weakest writing category: marketing copy (18.9)
From the September 2026 cycle, compared with the other 13 tools ranked in that cycle.
Evidence: every run
Every prompt StealthBypass 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.
6 of 33 outputs passed all 5 detectors; 17 were caught by at least one, 9 went unflagged but were scored by fewer than 5 detectors, and 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 | passed | caught | caught | caught | caught | 0.41 | |
| Discussion Post · Gemini 3.5 Flash | caught | passed | passed | passed | passed | 1.00 | |
| Personal Statement · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Discussion Post · Claude Sonnet 5 | passed | passed | passed | passed | passed | 1.00 | |
| News Article · GPT-5.5 | passed | passed | passed | passed | passed | 1.00 | |
| Product Desc · Claude Sonnet 5 | Returned the input unchanged | n/a | |||||
| Cover Letter · Claude Sonnet 5 | passed | not scored | passed | not scored | caught | 0.77 | |
| Personal Statement · Claude Sonnet 5 | caught | caught | caught | caught | caught | 0.00 | |
| Business Email · Gemini 3.5 Flash | passed | not scored | passed | not scored | passed | 1.00 | |
| Lit Review · Gemini 3.5 Flash | passed | passed | passed | passed | passed | 1.00 | |
| Discussion Post · GPT-5.5 | passed | passed | passed | passed | passed | 1.00 | |
| Argumentative Essay · Gemini 3.5 Flash | caught | passed | passed | passed | passed | 1.00 | |
| Landing Copy · Gemini 3.5 Flash | passed | not scored | passed | not scored | passed | 1.00 | |
| Argumentative Essay · Claude Sonnet 5 | passed | not scored | passed | not scored | caught | 0.97 | |
| Lit Review · GPT-5.5 | caught | passed | passed | passed | caught | 0.78 | |
| Howto Blog · GPT-5.5 | passed | not scored | passed | not scored | caught | 0.99 | |
| Product Desc · Gemini 3.5 Flash | passed | not scored | passed | not scored | caught | 1.00 | |
| Lit Review · Claude Sonnet 5 | passed | passed | passed | passed | passed | 1.00 | |
| Personal Statement · Gemini 3.5 Flash | passed | caught | passed | passed | passed | 1.00 | |
| Landing Copy · GPT-5.5 | passed | not scored | passed | not scored | passed | 0.99 | |
| Cover Letter · Gemini 3.5 Flash | passed | not scored | passed | not scored | caught | 0.94 | |
| Cover Letter · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Landing Copy · Claude Sonnet 5 | passed | not scored | passed | not scored | passed | 0.86 | |
| News Article · Gemini 3.5 Flash | passed | not scored | passed | not scored | passed | 1.00 | |
| Listicle Blog · GPT-5.5 | passed | not scored | passed | not scored | passed | 1.00 | |
| Business Email · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Listicle Blog · Gemini 3.5 Flash | passed | passed | passed | passed | passed | 1.00 | |
| Product Desc · GPT-5.5 | caught | caught | caught | caught | caught | 0.00 | |
| Listicle Blog · Claude Sonnet 5 | passed | not scored | passed | not scored | passed | 0.99 | |
| Howto Blog · Claude Sonnet 5 | passed | not scored | passed | not scored | passed | 1.00 | |
| Business Email · Claude Sonnet 5 | passed | not scored | passed | not scored | passed | 0.98 | |
| Howto Blog · Gemini 3.5 Flash | passed | not scored | passed | not scored | caught | 0.94 | |
| News Article · Claude Sonnet 5 | passed | not scored | passed | not scored | caught | 0.55 | |
| Detector rate (mean human-likelihood) | 69.3 | 56.3 hardest | 84.4 | 65.1 | 58.5 | ||
| Runs passed | 24/32 | 9/16 | 26/32 | 10/16 | 18/32 | ||
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.
A few runs come back with fewer than 5 verdicts because a detector did not return a usable score for them. A run still counts as passing at least 4 detectors only if that many detectors actually scored it and passed it. A partially scored run is counted as caught if any detector that did score it flagged the output, and is otherwise listed separately as partly scored.
History
Overall score compared with other ranked tools.
30.7 points below the median of 13 other tools in September 2026.
The shaded band is the 25th–75th percentile of other tools in each cycle. Scores are out of 100; higher is better. One completed cycle so far.
Monthly pricing
Standard USD rates, billed month to month. Annual discounts and promotions excluded.
-
Lite
$4.99/mo5,000 words per month.
- Up to 1,000 words per request.
-
Pro
$9.99/mo10,000 words per month.
- Up to 1,200 words per request.
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Max
$19.99/mo20,000 words per month.
- Up to 2,000 words per request.
Free access and trials
A free account includes 3 humanizations and 900 words per month, up to 300 words per request. One anonymous free try is also available.
Sample output
One AI-written passage from the September 2026 cycle and what StealthBypass returned for it. This prompt was picked by a fixed rule, not by how the tool scored.
AI-written input
Every tool on this prompt →Argumentative Essay · Academic Essay · written by Claude Sonnet 5 · 425 words
# The Rise of Long-Form Podcasts: A Positive Shift in News Consumption
The migration of audiences from traditional news broadcasts to long-form podcasts represents one of the most significant—and beneficial—shifts in media consumption of the digital age. As millions increasingly turn to hours-long conversations for their understanding of current events, this trend should be embraced rather than lamented, as it offers depth, context, and authenticity that traditional news formats have long sacrificed for brevity.
The most compelling argument for long-form podcasts lies in their capacity for genuine depth. Traditional news segments, constrained to two or three minutes, force complex issues into digestible but ultimately hollow soundbites. A podcast conversation lasting two or three hours allows for the kind of nuanced exploration that complicated topics deserve. Listeners can follow the winding logic of an argument, hear pushback and clarification in real-time, and develop a more sophisticated understanding of issues that resist simple summary. This format naturally accommodates complexity rather than flattening it.
Furthermore, long-form podcasts restore a sense of authenticity often missing from polished news broadcasts. When hosts and guests speak for extended periods, performative talking points inevitably give way to more genuine, unscripted reasoning. Audiences can hear people think through problems, admit uncertainty, and occasionally change their minds—human behaviors that build trust in ways that rehearsed cable news appearances cannot. This transparency allows listeners to evaluate not just what someone believes, but how they arrived at that belief.
Critics rightly point to concerns about misinformation and echo chambers in podcast spaces. However, these risks exist across all media, including traditional outlets with their own institutional biases and advertiser pressures. The solution isn't retreating to shorter formats but encouraging media literacy that helps audiences critically evaluate any source, long or short. Additionally, the interview-style format common to many podcasts often features genuine debate and cross-examination that many traditional broadcasts, dominated by monologue or brief panel exchanges, simply cannot match.
The podcast format also democratizes expertise. Long-form conversations allow specialists, scientists, and practitioners to explain their fields directly to audiences without the filtering and oversimplification that traditional news often imposes. This direct access to primary sources of knowledge represents a meaningful improvement over secondhand summaries.
As traditional media continues consolidating around shorter, more sensationalized content optimized for engagement rather than understanding, long-form podcasts offer a necessary counterbalance. They demand more from listeners—patience, sustained attention, critical thinking—but reward that investment with genuine comprehension rather than fragmented impressions. This evolution in news consumption should be celebrated as a return to substantive discourse in an age of diminishing attention spans.
Show the full input Show less
StealthBypass output
13 words (input 425)
# Why the Move to Long-Form Podcasts Is a Good Thing for News
- GPTZero0.97passed
- ZeroGPT1.00passed
- Originality.ai0.07caught
Passed 2 of 3 detectors. 2 of the 5 returned no verdict.
Every StealthBypass run in September 2026 →Each chip is one detector's score for that output, from 0 (AI) to 1 (human). A score of 0.50 or higher counts as a pass and shows green; below that the detector caught it and the chip shows red.
Penalties applied this cycle
How penalties work →The overall score shown above already reflects these deductions.
- Identical to input−2.0
The tool returned the input mostly unchanged. No real humanization happened.
- Meaning drift ×17−10.0
The output's meaning drifted significantly from the original input.
- Length inflation−1.0
The output ran much longer than the input, a common trick that pads text to dilute the AI signal.
- Length deflation ×21−10.0
The output came back much shorter than the input. The rewrite dropped content instead of paraphrasing it.
Compare with
Questions about StealthBypass
Answers are generated from the benchmark data and update every month. Last updated with the October 2026 cycle.
Is StealthBypass good?
StealthBypass ranked #13 of 14 in the September 2026 HumanizerBench cycle with an overall score of 39.38/100, below the field median of 68.82. On the parts of the score, it placed #10 of 14 on detector bypass, #14 of 14 on meaning preservation and #10 of 14 on readability. The score includes a 23-point deduction for meaning drift, length deflation, identical to input and length inflation.
Does StealthBypass bypass AI detectors?
In the September 2026 cycle, StealthBypass had a detector bypass rate of 78.6% (#10 of 14 tools). 6 of its 33 outputs passed all 5 detectors, and 17 were caught by at least one. Its average human-likelihood score from each detector, where 100 means every output was scored as human: ZeroGPT 84.4, GPTZero 69.3, Copyleaks 65.1, Originality.ai 58.5 and Winston AI 56.3.
Can StealthBypass bypass GPTZero?
In the September 2026 cycle, StealthBypass's average human-likelihood score from GPTZero was 69.3 out of 100 (#6 of 14 tools against GPTZero). The highest average GPTZero score that cycle was 81.4, by Phrasly. See every tool's GPTZero results.
Is StealthBypass free?
A free account includes 3 humanizations and 900 words per month, up to 300 words per request. One anonymous free try is also available. Paid plans start at $4.99 a month, billed monthly.
Is StealthBypass legit?
StealthBypass is a working AI humanizer at stealthbypass.app. HumanizerBench tested it in the September 2026 cycle, when it completed 32 of 33 test runs. Every input and output from its runs is published with each detector's verdict.
Does StealthBypass keep the original meaning?
StealthBypass scored 39.5 out of 100 for meaning preservation in the September 2026 cycle (#14 of 14; field median 73.7). The score measures how close each rewrite stays to the meaning of the original text. Its readability score was 54.1 (#10 of 14). It lost 23 points to penalties for meaning drift, length deflation, identical to input and length inflation.
Which kinds of writing does StealthBypass handle best?
In the September 2026 cycle, StealthBypass did best on discussion board posts (42.8/100) and worst on marketing copy (18.9/100). On academic essays it ranked #13 of 14.
What are the best alternatives to StealthBypass?
StealthBypass was not ranked in the October 2026 cycle. The top three that cycle were WriteHuman (#1, 74.89/100), StealthGPT (#2, 74.50/100) and Undetectable.ai (#3, 71.18/100).