Head to head · October 2026 cycle
Humbot vs StealthGPT
StealthGPT finished 12.8 points ahead of Humbot in the October 2026 cycle, 74.50 to 61.74, ranking #2 against #13 in a field of 14. StealthGPT scored higher on 4 of 6 detectors and 5 of 6 writing categories. Humbot came out ahead on Winston AI (98.1 vs 90.4), meaning preservation (68.6 vs 61.8) and consistency across categories (94.0 vs 90.9).
- Detectors
- 1 – 4 (1 tie)
- Categories
- 1 – 5
- Components
- 2 – 3
30 prompts · Last tested · Methodology v1.3.0
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. StealthGPT took 4 of 6, with 1 tied.
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 →
Head-to-head history
Overall score in every cycle both tools were tested. Humbot has finished ahead in 3 of 4 shared cycles.
| Cycle | Humbot | StealthGPT | Margin |
|---|---|---|---|
| October 2026 | 61.74 #13 | 74.50 #2 | → 12.8 |
| August 2026 | 66.95 #5 | 45.55 #12 | ← 21.4 |
| July 2026 | 66.42 #5 | 61.52 #8 | ← 4.9 |
| June 2026 | 80.28 #4 | 71.47 #7 | ← 8.8 |
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
Humbot
4 wins- Meaning preservation Score 68.6 vs 61.8
- Consistency Score 94.0 vs 90.9
- Winston AI Detector 98.1 vs 90.4
- Application Essay Category 74.0 vs 73.4
StealthGPT
12 wins- Penalties Score −3.0 vs −10.0
- Bypass rate Score 88.1 vs 71.4
- Readability Score 72.6 vs 65.0
- Pangram Detector 69.9 vs 0.0
- GPTZero Detector 94.8 vs 65.6
- Copyleaks Detector 100.0 vs 93.3
- Originality.ai Detector 96.3 vs 94.0
- News Article Category 84.0 vs 44.9
- Blog Post Category 70.4 vs 37.1
- Academic Essay Category 73.6 vs 40.8
- and 2 more
Same prompt, both outputs
Both tools were given this AI-written passage in the October 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 gemini-3-8-flash · 183 words
Elevate your craft with the definitive standard in accuracy: our Precision-Milled Stainless-Steel Ruler. Engineered for professionals who refuse to compromise, this essential tool bridges the gap between workshop durability and micron-level exactness.
Forged from premium, tempered stainless steel, this ruler resists corrosion, warping, and the relentless wear of daily use. Its edges are CNC-milled to exacting tolerances, providing a razor-sharp, dead-straight guide perfect for drafting, scribing, and precision cutting. Unlike inferior stamped alternatives with markings that rub away, our ultra-fine imperial and metric graduations are deeply laser-etched for permanent clarity. Paired with a glare-resistant satin-chrome finish, it guarantees effortless readability under bright studio lights or direct sunlight.
Designed with a true-zero edge, you can take flush, butt-joint measurements against vertical surfaces without second-guessing your starting point. Its balanced, substantial weight provides a grounded feel on wood, paper, fabric, or metal, preventing accidental slippage mid-stroke.
Whether you are an architect detailing blueprints, a woodworker laying out intricate joinery, or an engineer verifying tight tolerances, this ruler delivers uncompromising reliability. Upgrade your workspace with a tool built to last a lifetime. Measure with absolute confidence.
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279 words (input 183)
Elevate your skill level by using a highly accurate ruler that has been manufactured to the highest standards. This ruler is made from stainless steel and has been precision-milled. It is designed to be used in workshops as well as other demanding environments where accuracy is critical.
This ruler is made of high quality, hardened stainless steel which protects against rusting, bending, and the daily abuse of everyday use. The edges of the ruler are precision machined using CNC technology, creating a sharp, perfectly straight line to use when drafting, marking, or making precise cuts. Unlike some cheaper options on the market today (i.e. stamped metal rulers), where the numbers can fade over time; our ultra-fine imperial and metric measurements will last forever due to being laser etched into the surface of the ruler. In addition to being laser etched, the ruler also has a anti-reflective satin-chrome finish that allows you to easily see the measurements regardless of whether you are working in a brightly lit studio or outdoors in direct sunlight.
This is the only product on the market today that has a true-zero edge. You will never have to doubt where to begin when taking flush butt-joint measurements against vertical surfaces. This product also offers a balanced weight and substantial size, giving it a solid feel on all types of materials (wood, paper, fabric, and metal) which helps prevent slippage during use.
Whether you are an architect working on plans and details, a woodworker creating complex joinery designs, or an engineer verifying exact measurements, the reliability of this ruler is guaranteed. Upgrade your work area with a durable instrument that will last for years. Measure with certainty.
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- GPTZero0.00caught
- Pangram0.00caught
- Winston AI0.92passed
- ZeroGPT0.70passed
- Copyleaks1.00passed
- Originality.ai0.01caught
Passed 3 of 6 detectors.
Every Humbot run in October 2026 →185 words (input 183)
Precision is our name and fame. Crafted from tempered stainless-steel, it’s immune to corrosion, wear, and tear. Graduations in imperial and metric are laser-etched for clarity. Take this ruler on the journey with you and it’ll be as good as new when you return.
The ruler’s edges are CNC-milled to strict tolerances to provide a dead-straight edge for scribing, drawing, or cutting. Unlike other rulers that have graduations stamped into them, ours are laser-etched deeply enough that they’ll never rub-off. Built for professionals who can’t afford to make allowances for inaccuracies, this ruler will prove its worth on a daily basis.
Use it to draw blueprints if you’re an architect, mark-up joinery if you’re a woodworker, or check close tolerances if you’re an engineer. This ruler’s satin-chrome finish will stand up to glare under the harshest studio lights or direct sunlight. It also sports a true-zero edge so you can lay it up against a surface and take readings from a dead-level.
Balanced well so it won’t slide around, it’ll perform admirably on wood, paper, metal, fabric, etc. Get one! You’ll be glad you did!
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- GPTZero1.00passed
- Pangram1.00passed
- Winston AI1.00passed
- ZeroGPT0.86passed
- Copyleaks1.00passed
- Originality.ai1.00passed
Passed 6 of 6 detectors.
Every StealthGPT run in October 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 Humbot better than StealthGPT?
StealthGPT finished 12.8 points ahead of Humbot in the October 2026 cycle, 74.50 to 61.74, ranking #2 against #13 in a field of 14. StealthGPT scored higher on 4 of 6 detectors and 5 of 6 writing categories. Both tools ran the same 30 prompts, scored by the same 6 detectors, under methodology v1.3.0; every input, output and verdict is published.
Which bypasses AI detectors better, Humbot or StealthGPT?
StealthGPT posted the higher bypass rate, 88.1 vs 71.4, and scored higher on 4 of 6 detectors. Humbot led on Winston AI; StealthGPT led on GPTZero, Originality.ai, Copyleaks and Pangram.
Do Humbot and StealthGPT keep the original meaning?
Humbot preserved meaning better, 68.6 vs 61.8 on our 0–100 similarity scale, though the confidence intervals overlap. On readability, StealthGPT rated higher, 72.6 vs 65.0. Penalties this cycle: Humbot −10.0, StealthGPT −3.0.