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October 2026 results: WriteHuman holds #1, StealthGPT jumps to #2. Read the analysis →
HumanizerBench

Head to head · October 2026 cycle

Stealth Writer vs SupWriter

Stealth Writer finished 3.2 points ahead of SupWriter in the October 2026 cycle, 65.98 to 62.75, ranking #8 against #11 in a field of 14. Stealth Writer scored higher on 5 of 6 detectors and 3 of 6 writing categories. SupWriter came out ahead on penalties (None vs −3.0), news article prompts (64.4 vs 55.4) and readability (49.2 vs 41.8).

65.98 /100
overall score
#8 /14
rank ▼ 6
+3.23
← Stealth Writer leads
Detectors
5 – 0 (1 tie)
Categories
3 – 3
Components
2 – 3
62.75 /100
overall score
#11 /14
rank ▼ 6

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 →

Bypass rate Stealth Writer by 21.3
71.3 50.0
Meaning preservation CIs overlap SupWriter by 5.9
71.6 77.5
Readability SupWriter by 7.4
41.8 49.2
Consistency Stealth Writer by 3.8
94.6 90.8
Penalties fewer is better SupWriter by 3.0
−3.0 None

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. Stealth Writer took 5 of 6, with 1 tied.

GPTZero Stealth Writer by 32.0
40.9 8.9
Originality.ai Stealth Writer by 44.5
99.9 55.5
Copyleaks Stealth Writer by 18.5
96.7 78.2
Winston AI Stealth Writer by 15.9
99.4 83.5
ZeroGPT Stealth Writer by 16.8
90.7 73.9
Pangram Even
0.0 0.0

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 →

Academic Essay Application Essay Blog Post Marketing Copy Discussion Board News Article Academic Essay: Stealth Writer 66.8 · SupWriter 57.4 Application Essay: Stealth Writer 66.1 · SupWriter 59.4 Blog Post: Stealth Writer 68.3 · SupWriter 62.0 Marketing Copy: Stealth Writer 57.4 · SupWriter 58.4 Discussion Board: Stealth Writer 54.2 · SupWriter 57.6 News Article: Stealth Writer 55.4 · SupWriter 64.4
Stealth Writer SupWriter Outer ring = 100
Academic Essay 6 prompts Stealth Writer by 9.4
66.8 57.4
Application Essay 6 prompts Stealth Writer by 6.7
66.1 59.4
Blog Post 6 prompts Stealth Writer by 6.4
68.3 62.0
Marketing Copy 6 prompts SupWriter by 1.1
57.4 58.4
Discussion Board 3 prompts SupWriter by 3.4
54.2 57.6
News Article 3 prompts SupWriter by 9.0
55.4 64.4

Head-to-head history

Overall score in every cycle both tools were tested. Stealth Writer has finished ahead in 2 of 2 shared cycles.

50 60 70 80 September 2026 October 2026 September 2026: SupWriter 72.80 (#5) September 2026: Stealth Writer 75.39 (#2) October 2026: SupWriter 62.75 (#11) October 2026: Stealth Writer 65.98 (#8) 66.0 62.8
Stealth Writer SupWriter
Cycle Stealth Writer SupWriter Margin
October 2026 65.98 #8 62.75 #11 ← 3.2
September 2026 75.39 #2 72.80 #5 ← 2.6

Where each one wins

Every measure above that one tool won outright, largest margin first within each group.

Stealth Writer

10 wins
  • Bypass rate Score 71.3 vs 50.0
  • Consistency Score 94.6 vs 90.8
  • Originality.ai Detector 99.9 vs 55.5
  • GPTZero Detector 40.9 vs 8.9
  • Copyleaks Detector 96.7 vs 78.2
  • ZeroGPT Detector 90.7 vs 73.9
  • Winston AI Detector 99.4 vs 83.5
  • Academic Essay Category 66.8 vs 57.4
  • Application Essay Category 66.1 vs 59.4
  • Blog Post Category 68.3 vs 62.0

SupWriter

6 wins
  • Penalties Score None vs −3.0
  • Readability Score 49.2 vs 41.8
  • Meaning preservation Score 77.5 vs 71.6
  • News Article Category 64.4 vs 55.4
  • Discussion Board Category 57.6 vs 54.2
  • Marketing Copy Category 58.4 vs 57.4

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.

Howto Blog · Blog Post · written by gemini-3-8-flash · 404 words

Publishing a self-illustrated picture book is a uniquely rewarding journey. When you are both the author and the illustrator, you hold complete creative control over the storytelling experience. Here is a step-by-step roadmap to turning your vision into a published book.

### 1. Master the Picture Book Format Most standard picture books are 32 pages long. Before you begin illustrating, map your story onto a 32-page "dummy"—a rough, miniature version of the book. Remember that your illustrations should not simply mirror the text; they should expand it, adding subtext, humor, or emotion. Standard picture books usually contain under 500 words for young audiences.

### 2. Create the Artwork Once your dummy is finalized, create your finished art. Consistency is crucial: ensure your main characters look identical from every angle across every spread. If you work traditionally (with watercolor or gouache), scan your artwork at a high resolution (at least 300 to 600 DPI). If you work digitally (using tools like Procreate or Photoshop), work in the CMYK color profile to ensure screen colors match the final printed page. Crucially, remember to add a 0.125-inch "bleed" around your illustrations so no vital artwork gets cut off during printing.

### 3. Choose Your Publishing Path You have two primary routes:

* **Traditional Publishing:** Research literary agents and art directors at traditional publishing houses who represent "author-illustrators." Create a professional online portfolio, a dummy book (PDF), and a query letter. If acquired, the publisher handles printing, distribution, and marketing, and pays you an advance and royalties. * **Self-Publishing (Indie):** You maintain full ownership and speed-to-market. Use Print-on-Demand (POD) platforms like **Amazon KDP** (for paperbacks and global reach) and **IngramSpark** (for high-quality hardcovers and bookstore catalog distribution). You will need to purchase your own ISBNs (via Bowker in the US) if you want wide distribution beyond Amazon.

### 4. Layout and Production Pair your text with your artwork using software like Adobe InDesign, Affinity Publisher, or Canva. Select readable, professional typography that complements the art. Export the interior files as a high-resolution, print-ready PDF, alongside a separate cover spread file (back cover, spine, and front cover combined).

### 5. Launch and Promote Always order a physical proof copy to inspect colors, trim lines, and text placement before public launch. Once approved, market your book by reaching out to local indie bookstores for read-aloud events, engaging with parents and teachers on social media, and securing reviews from book bloggers.

Show the full input

472 words (input 404)

The self-publishing of a picture book in which you have illustrated your story is a very special process. If you are also the illustrator, as I was, you can do whatever you like with the storytelling process. If you're aiming to become a published author here's a step-by-step roadmap for how to transform your vision into a published book.

### 1. Learn about the Picture Book Format – it is the secret to success! Typical 32 page picture books. Before starting to draw, lay out your tale on a “dummy,” or a mini version of your book with 32 pages. Keep in mind that your drawings don't necessarily have to be a reflection of the text; draw more, with some subtext, humor or emotion. Typically, picture books for younger audiences have less than 500 words.

### 2. Create the Artwork When your dummy is ready, make your final art – which should be consistent – all your main characters should look exactly the same from all angles on all spreads. For those working traditionally - watercolor or gouache - Scan at a high resolution - 300 to 600 DPI. When using digital tools (such as Procreate or Photoshop), ensure that you are working in the Colours CMYK colour space, so that the colours on-screen and in print are accurate. Of course, keep in mind to include a 0.125-inch “bleed” around artwork, and not cut off any important pictures in the printing process.

### 3. Select your publishing route | There are two main lines:

Research literary agents/art directors of traditional publishing houses specializing in "author-illustrators". Prepare online portfolio, dummy book (PDF), and query letter. When this occurs, the publisher print, distribute, market the book, and also pay you an advance and royalties. SelfPublishing (Indie): You are the complete owner and will have a faster speed to market. Take advantage of Print-on-Demand (POD) services, such as Amazon KDP (for paperback and worldwide distribution) and IngramSpark (for quality hardcover and bookstore catalog distribution). If you need to sell your book anywhere else other than Amazon, you need to buy your own ISBNs (from Bowker in the US).

### 4. Layout and Production Use software, such as Adobe InDesign, Affinity Publisher, or Canva, to layout and coordinate your text with artwork. Use typography suitable for readability and professional appearance that matches that of the art work; export the interior as a single file that is high resolution and print-ready (refer to Orientation); export a back cover, spine, and front cover files as a single spread file.

### 5. Launch and Promote Do get a print copy to check the color(s), cropping and position of text. When it's accepted, promote your book by offering to read your book to local fingerling bookstores, interact with parents and teachers on social media, and get reviews from book bloggers.

Show the full output
  • GPTZero0.98passed
  • Pangram0.00caught
  • Winston AI1.00passed
  • ZeroGPT0.72passed
  • Copyleaks1.00passed
  • Originality.ai1.00passed

Passed 5 of 6 detectors.

Every Stealth Writer run in October 2026 →

427 words (input 404)

The experience of publishing a self-illustrated picture book is highly rewarding. Being both the creator and artist gives you total control over the narrative or storytelling exercise. Here is a detailed guide to turning your idea into a published book.

### Understand the Form of a Picture Book

The typical length of picture books is 32 pages. Before illustrating, plan your narrative on a 32-page “dummy” which is a miniature sample of the book. Make sure your illustrations do not just repeat what is said in the words but expand it, adding subtext, or humor or feeling. Standard picture books typically contain fewer than 500 words for children.

### Make Your Artwork.

When the dummy is completed, create your finished art. No matter the angle from which you are viewing, ensure your main character looks identical from every spread. If you create your artwork in a traditional format: (watercolor or gouache), scan at a high resolution (300 to 600 DPI) When designing on digital software, for instance Procreate or Photoshop, design in CMYK to ensure the digital colour matches what is printed on page. A 0.125-inch “bleed” must be added to the image, so no important artwork is cut off during printing.

### 3. Determine How You Will Publish

There are two main options.

- Check literary agents and art directors at traditional publishing houses who represent author-illustrators. Develop a dummy book (PDF), a professional online portfolio, and a query letter. If a publisher acquires your book, they will take care of the printing, distribution and marketing of the book. They will pay you an advance and onsite royalties. - Self-publishing means you own it all and launch it fast. Utilize Amazon KDP, ideal for paperbacks and worldwide distribution, and IngramSpark, which offers high-quality hardcovers and stock placement for bookstores. If you are looking to sell wide rather than just Amazon, you’ll need to buy your own ISBNs (via Bowker in the US).

### 4. Arrangement and Creation.

Use Adobe InDesign, Affinity Publisher or Canva to pair your text with your artwork. Use clear and professional typography that is compatible with the art. Export the inside files in a print-ready PDF high-resolution file and a separate cover spread file (back, spine, front).

### Release and publicize.

You should always order a physical proof copy so you can check the colors, trim lines, and text placement before going public. After having your book approved, promote it by contacting nearby indie bookstores for read-aloud events, talking to parents and teachers on social media, and getting book reviews from bloggers.

Show the full output
  • GPTZero0.00caught
  • Pangram0.00caught
  • Winston AI0.99passed
  • ZeroGPT0.64passed
  • Copyleaks1.00passed
  • Originality.ai0.84passed

Passed 4 of 6 detectors.

Every SupWriter 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 Stealth Writer better than SupWriter?

Stealth Writer finished 3.2 points ahead of SupWriter in the October 2026 cycle, 65.98 to 62.75, ranking #8 against #11 in a field of 14. Stealth Writer scored higher on 5 of 6 detectors and 3 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, Stealth Writer or SupWriter?

Stealth Writer posted the higher bypass rate, 71.3 vs 50.0, and scored higher on 5 of 6 detectors. Stealth Writer led on GPTZero, Originality.ai, Copyleaks, Winston AI and ZeroGPT.

Do Stealth Writer and SupWriter keep the original meaning?

SupWriter preserved meaning better, 77.5 vs 71.6 on our 0–100 similarity scale, though the confidence intervals overlap. On readability, SupWriter rated higher, 49.2 vs 41.8. Penalties this cycle: Stealth Writer −3.0, SupWriter None.