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In HumanizerEval's October 2026 review of 11 AI humanizers, StealthGPT ranked #1, with an average bypass rate of 80.3% across 6 AI detectors.
The data
StealthGPT ranked #1 of 11 humanizers in HumanizerEval's October 2026 review.
HumanizerEval runs every humanizer on the same 50 texts and scores each output through Pangram, GPTZero, Originality.ai Turbo, Originality.ai 5.0, ZeroGPT, and Winston AI. Every score is published in a public CSV.
In HumanizerEval's October 2026 review, StealthGPT and Rephrasy rewrote the same 50 texts and faced the same 6 detectors. StealthGPT passed all 6 on 17 texts. Rephrasy did not pass all 6 on any of them, and passed Pangram on 26%.
All 6 detectors shown, including where StealthGPT trails.
| Metric | StealthGPT Super | Rephrasy |
|---|---|---|
| 80.3% | 62.3% | |
| 17 of 50 | 0 of 50 | |
| 88% | 26% | |
| 92% | 70% | |
| 92% | 86% | |
| 34% | 0% | |
| 84% | 92% | |
| 92% | 100% | |
| 83.5% | 59.0% | |
| 1.18 | 1.22 |
If you're looking for a Rephrasy alternative, the clearest difference is what independent testing measured. In HumanizerEval's October 2026 review, Rephrasy averaged 62.3% across six AI detectors, passed Pangram on 26% of texts, and didn't clear all six detectors on any of the 50. Rephrasy's naturalness pass rate was 44%, against 82% for StealthGPT.
StealthGPT averaged 80.3% on the same 50 texts, passed Pangram on 88%, and cleared all six detectors on 17. Its quality pass rate was 83.5%, against 59.0% for Rephrasy.
Average Bypass Rate (HumanizerEval)
Benchmark Detectors
End-to-End Creation
Readability & Flow
Academic & Niche Tools
Platform Ecosystem
Pricing Structure
Bypass and quality figures from HumanizerEval's October 2026 review; bypass is the mean strict-bypass rate across 6 AI detectors. See the full head-to-head.
HumanizerEval scores every output for factual consistency, naturalness, syntax and stance. Rephrasy's quality pass rate was 59.0%. Rephrasy's naturalness pass rate was 44%, against 82% for StealthGPT.
StealthGPT's quality pass rate was 83.5% on the same 50 texts, so less of your time goes into repairing the rewrite.
Rephrasy works on text you paste in. You write the draft somewhere else, run it through Rephrasy, and bring it back.
Stealth Agent researches a topic, drafts the content and humanizes it in one place, and Stealth Writer generates new copy from a prompt. No jumping between tabs.
Pangram is one of the strictest detectors in HumanizerEval's panel. In the October 2026 review, Rephrasy passed it on 13 of 50 texts (26%). StealthGPT passed it on 44 of 50 (88%).
See how StealthGPT handles standard AI content: the same raw AI draft, before and after humanization.
Tier: Low
A product designer is responsible for creating digital products that are both useful and easy to use. Their work combines interface design, user experience, research, and problem-solving. Product designers study how people interact with apps, websites, or software, then turn those insights into simple and intuitive experiences. The job is not only about making screens look attractive. A product designer also thinks about how a product functions, how users move through it, and how it solves real problems. They often create wireframes, prototypes, and visual designs, while working closely with developers, product managers, and business teams.
Tier: High
Product designers build digital products people actually enjoy using. The role blends interface design, UX thinking, research, and a healthy dose of problem-solving. A good designer watches how people really use apps and websites, then turns those observations into experiences that feel obvious from the first click. It goes well beyond making screens look nice. Designers map out how a product works, how someone moves through it, and whether it genuinely solves the problem at hand. Day to day, that means sketching wireframes, building prototypes, and refining visuals, always in close collaboration with engineers, product managers, and the wider business.
Rephrasy sells a 24-hour Quick Pass for $14.99, yearly Growth ($99 a year, 100 humanizations a month of up to 2,000 words each) and Business ($120 a year, 200 humanizations a month) plans, and a lifetime plan.
StealthGPT offers a tiered request system (Essential, Pro, Business, and Enterprise). With generous per-request word caps that allow you to humanize massive blocks of text at once with nearly unlimited usage. From students to large-scale content publishers, StealthGPT scales gracefully to meet your needs without hidden costs.
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In HumanizerEval's October 2026 review, StealthGPT averaged 80.3% across six detectors to Rephrasy's 62.3%. StealthGPT passed all six detectors on 17 of 50 texts; Rephrasy didn't pass all six on any. StealthGPT's quality pass rate was 83.5% against 59.0%.
StealthGPT is engineered specifically to bypass strict academic and corporate detectors, including Turnitin, Copyleaks, and GPTZero. Turnitin isn't part of HumanizerEval's benchmark because it offers no public API at benchmark volume, but HumanizerEval reports that independent testing puts StealthGPT Super's Turnitin bypass rate at about 95%.
Rephrasy passed Pangram on 13 of 50 texts (26%) in HumanizerEval's October 2026 review. StealthGPT passed it on 44 of 50 (88%).
Rephrasy sells a 24-hour Quick Pass for $14.99, yearly Growth ($99 a year, 100 humanizations a month of up to 2,000 words each) and Business ($120 a year, 200 humanizations a month) plans, and a lifetime plan.
Yes, StealthGPT supports humanizing and generating content in all major languages while maintaining native-level fluency.
See what HumanizerEval measured, then try StealthGPT as your Rephrasy alternative.
