Head to head · September 2026 cycle
StealthBypass vs SupWriter
SupWriter finished 33.4 points ahead of StealthBypass in the September 2026 cycle, 72.80 to 39.38, ranking #5 against #13 in a field of 14. SupWriter scored higher on 3 of 5 detectors and 7 of 7 writing categories. StealthBypass came out ahead on GPTZero (69.3 vs 21.0), consistency across categories (80.7 vs 64.7) and readability (54.1 vs 45.7). The bypass-rate gap, 78.6 to 80.3, sits inside both tools' 95% confidence intervals, so treat bypass as a draw.
- Detectors
- 2 – 3
- Categories
- 0 – 7
- Components
- 2 – 3
33 prompts · Last tested · Methodology v1.2.0
Score components
What the overall score is made of: bypass rate weighs 42%, meaning preservation 32%, readability 16%, consistency across categories 10%. Output-quality penalties come off the total. How scoring works →
CIs overlap marks a gap that sits inside both tools' published 95% confidence intervals for that component; it may not survive another cycle.
Detector by detector
Share of each tool's outputs that a detector classified as human-written. SupWriter took 3 of 5.
Writing categories
Category score per writing context: bypass credit only for real rewrites, blended with the category's own meaning preservation and readability. Small categories swing; the prompt count is shown on each row. How category scores work →
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
StealthBypass
4 wins- Consistency Score 80.7 vs 64.7
- Readability Score 54.1 vs 45.7
- GPTZero Detector 69.3 vs 21.0
- ZeroGPT Detector 84.4 vs 77.9
SupWriter
13 wins- Penalties Score None vs −23.0
- Meaning preservation Score 79.0 vs 39.5
- Bypass rate Score 80.3 vs 78.6
- Winston AI Detector 81.5 vs 56.3
- Copyleaks Detector 85.3 vs 65.1
- Originality.ai Detector 78.5 vs 58.5
- Marketing Copy Category 81.3 vs 18.9
- Blog Post Category 78.4 vs 28.2
- News Article Category 81.1 vs 35.3
- Application Essay Category 67.1 vs 24.5
- and 3 more
Same prompt, both outputs
Both tools were given this AI-written passage in the September 2026 cycle. Below it is what each one returned. This prompt was picked by a fixed rule, not by how the tools scored.
AI-written input
Every tool on this prompt →Product Desc · Marketing Copy · written by GPT-5.5 · 194 words
Bring fresh flavor to your kitchen year-round with the Indoor Herb-Garden Starter Kit, a simple, stylish way to grow your favorite herbs at home. Perfect for beginners and seasoned cooks alike, this all-in-one kit includes everything you need to start a thriving mini garden on your windowsill, countertop, or apartment balcony.
Inside, you’ll find premium herb seeds, biodegradable growing pots, nutrient-rich soil discs, plant markers, and easy step-by-step instructions. Grow classic culinary favorites like basil, parsley, cilantro, chives, and thyme, then snip what you need for soups, salads, sauces, teas, and garnishes.
Designed for small spaces, the compact setup fits neatly in bright indoor areas without mess or fuss. The biodegradable pots make transplanting easy, while the included markers help you track each herb as it sprouts. Whether you’re adding a fresh touch to weeknight dinners or creating a greener home atmosphere, this kit makes gardening approachable and rewarding.
It also makes a thoughtful gift for food lovers, new homeowners, apartment dwellers, and anyone who enjoys hands-on hobbies. With just sunlight, water, and a little care, the Indoor Herb-Garden Starter Kit turns everyday cooking into a fresher, more fragrant experience—right from your own home.
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204 words (input 194)
Brighten your kitchen year-round with the Indoor Herb-Garden Starter Kit. A smart and elegant way to grow fresh herbs right at home, this all-inclusive kit is ideal for culinary beginners and experts alike. It provides everything necessary to start a vibrant little herb garden in your kitchen windowsill, countertop, or balcony—no special gardening skills or tools required. You’ll find premium herb seeds (basil, parsley, cilantro, chives, and thyme), biodegradable seed-starting pots, nutrient-rich soil discs, plant markers, and clear, easy-to-follow step-by-step directions. Simply sow the seeds, add water, and—in a few weeks—start snipping a bounty of delicious herbs to elevate your soups, salads, sauces, teas, and garnishes. With a compact footprint, the Indoor Herb-Garden Starter Kit fits easily in sunny locations within your home for mess-free gardening in any space. The included biodegradable pots ensure stress-free transplanting to larger containers, while the plant markers keep each herb neatly labeled as it germinates. Perfect for the home chef who loves fresh ingredients or the apartment dweller who desires a bit of greenery, this starter kit brings the joy and convenience of fresh herbs to the everyday. It also makes a thoughtful gift for foodies, housewarmers, and anyone who appreciates the hands-on satisfaction of growing their own.
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- GPTZero0.00caught
- Winston AI0.00caught
- ZeroGPT0.00caught
- Copyleaks0.00caught
- Originality.ai0.00caught
Passed 0 of 5 detectors.
Every StealthBypass run in September 2026 →205 words (input 194)
Indoors herb planters are a great way to bring fresh flavor to your kitchen all year long with its simple, stylish indoor herb-garden starter kit. The complete kit is ideal for beginner and advanced cooks. You can easily start a mini garden on your windowsill, counter or apartment balcony.
You will find inside premium herb seeds, biodegradable growing pots that break down naturally in landfill, soil discs and plant markers plus easy-to-follow instructions. For soups, salads, sauces, teas, and garnishes, grow basil, parsley, cilantro, chives and thyme. Just snip what you need!
The compact setup is made for small spaces so it can fit into bright areas indoors mess-free. The biodegradable pots, which make transplanting easy, also come with markers to identify them as they grow. If you’re looking to enhance your weeknight dinner with a fresh twist or to add some greenery to your home, this kit helps you grow your own.
It also makes a more than thoughtful gift for anyone who loves to cook, has recently moved into a house or apartment, or enjoys a hands-on hobby. The Indoor Herb-Garden Starter Kit enables everyday cooking right in your home with sunshine, water, and some caring; making the experience more aromatic and fresh.
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- GPTZero0.00caught
- Winston AI1.00passed
- ZeroGPT0.47caught
- Copyleaks1.00passed
- Originality.ai0.98passed
Passed 3 of 5 detectors.
Every SupWriter 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.
Questions people ask
Is StealthBypass better than SupWriter?
SupWriter finished 33.4 points ahead of StealthBypass in the September 2026 cycle, 72.80 to 39.38, ranking #5 against #13 in a field of 14. SupWriter scored higher on 3 of 5 detectors and 7 of 7 writing categories. Both tools ran the same 33 prompts, scored by the same 5 detectors, under methodology v1.2.0; every input, output and verdict is published.
Which bypasses AI detectors better, StealthBypass or SupWriter?
SupWriter posted the higher bypass rate, 80.3 vs 78.6, and scored higher on 3 of 5 detectors. StealthBypass led on GPTZero and ZeroGPT; SupWriter led on Originality.ai, Copyleaks and Winston AI. The overall bypass gap is inside both 95% confidence intervals, so it is not a reliable difference.
Do StealthBypass and SupWriter keep the original meaning?
SupWriter preserved meaning better, 79.0 vs 39.5 on our 0–100 similarity scale. On readability, StealthBypass rated higher, 54.1 vs 45.7. Penalties this cycle: StealthBypass −23.0, SupWriter None.