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

Head to head · October 2026 cycle

StealthGPT vs Walter Writes

StealthGPT finished 11.0 points ahead of Walter Writes in the October 2026 cycle, 74.50 to 63.53, ranking #2 against #10 in a field of 14. StealthGPT scored higher on 5 of 6 detectors and 6 of 6 writing categories. Walter Writes came out ahead on meaning preservation (70.4 vs 61.8), Winston AI (96.5 vs 90.4) and consistency across categories (92.7 vs 90.9).

74.50 /100
overall score
#2 /14
rank ▲ 7
+10.97
← StealthGPT leads
Detectors
5 – 1
Categories
6 – 0
Components
3 – 2
63.53 /100
overall score
#10 /14
rank -

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 StealthGPT by 15.3
88.1 72.8
Meaning preservation Walter Writes by 8.6
61.8 70.4
Readability StealthGPT by 9.1
72.6 63.5
Consistency Walter Writes by 1.8
90.9 92.7
Penalties fewer is better StealthGPT by 6.0
−3.0 −9.0

Detector by detector

Share of each tool's outputs that a detector classified as human-written. StealthGPT took 5 of 6.

GPTZero StealthGPT by 7.0
94.8 87.8
Originality.ai StealthGPT by 4.8
96.3 91.5
Copyleaks StealthGPT by 10.7
100.0 89.3
Winston AI Walter Writes by 6.1
90.4 96.5
ZeroGPT StealthGPT by 5.8
77.3 71.6
Pangram StealthGPT by 69.9
69.9 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: StealthGPT 73.6 · Walter Writes 71.4 Application Essay: StealthGPT 73.4 · Walter Writes 66.1 Blog Post: StealthGPT 70.4 · Walter Writes 61.2 Marketing Copy: StealthGPT 69.7 · Walter Writes 53.2 Discussion Board: StealthGPT 57.2 · Walter Writes 37.9 News Article: StealthGPT 84.0 · Walter Writes 56.0
StealthGPT Walter Writes Outer ring = 100
Academic Essay 6 prompts StealthGPT by 2.2
73.6 71.4
Application Essay 6 prompts StealthGPT by 7.2
73.4 66.1
Blog Post 6 prompts StealthGPT by 9.2
70.4 61.2
Marketing Copy 6 prompts StealthGPT by 16.5
69.7 53.2
Discussion Board 3 prompts StealthGPT by 19.3
57.2 37.9
News Article 3 prompts StealthGPT by 28.0
84.0 56.0

Head-to-head history

Overall score in every cycle both tools were tested. StealthGPT has finished ahead in 3 of 5 shared cycles.

40 50 60 70 80 June 2026 July 2026 August 2026 September 2026 October 2026 June 2026: Walter Writes 67.24 (#10) June 2026: StealthGPT 71.47 (#7) July 2026: Walter Writes 62.84 (#7) July 2026: StealthGPT 61.52 (#8) August 2026: Walter Writes 60.83 (#9) August 2026: StealthGPT 45.55 (#12) September 2026: Walter Writes 61.70 (#10) September 2026: StealthGPT 65.10 (#9) October 2026: Walter Writes 63.53 (#10) October 2026: StealthGPT 74.50 (#2) 74.5 63.5
StealthGPT Walter Writes
Cycle StealthGPT Walter Writes Margin
October 2026 74.50 #2 63.53 #10 ← 11.0
September 2026 65.10 #9 61.70 #10 ← 3.4
August 2026 45.55 #12 60.83 #9 → 15.3
July 2026 61.52 #8 62.84 #7 → 1.3
June 2026 71.47 #7 67.24 #10 ← 4.2

Where each one wins

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

StealthGPT

14 wins
  • Penalties Score −3.0 vs −9.0
  • Bypass rate Score 88.1 vs 72.8
  • Readability Score 72.6 vs 63.5
  • Pangram Detector 69.9 vs 0.0
  • Copyleaks Detector 100.0 vs 89.3
  • GPTZero Detector 94.8 vs 87.8
  • ZeroGPT Detector 77.3 vs 71.6
  • Originality.ai Detector 96.3 vs 91.5
  • News Article Category 84.0 vs 56.0
  • Discussion Board Category 57.2 vs 37.9
  • and 4 more

Walter Writes

3 wins
  • Meaning preservation Score 70.4 vs 61.8
  • Consistency Score 92.7 vs 90.9
  • Winston AI Detector 96.5 vs 90.4

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.

Argumentative Essay · Academic Essay · written by claude-sonnet-5-5 · 434 words

# Generative AI Will Reshape Knowledge Work, Not Replace It

The debate over generative AI and knowledge work tends to split into two camps: those who predict mass displacement of analysts, writers, and programmers, and those who dismiss the technology as an overhyped autocomplete. Both miss the more interesting reality. Generative AI will fundamentally restructure knowledge work by commoditizing routine cognition, while raising the value of judgment, taste, and accountability.

Consider what these systems do well. They draft emails, summarize documents, generate boilerplate code, and produce serviceable first versions of nearly any text. These tasks once consumed enormous portions of a professional's day. A study by MIT researchers found that workers using ChatGPT on writing tasks finished about 40 percent faster, with higher quality ratings. Similarly, GitHub reported that developers using Copilot completed tasks significantly faster than those without it. When the cost of producing a first draft approaches zero, the draft itself stops being the valuable part of the job.

What becomes valuable is everything surrounding the draft. Someone must decide which problem is worth solving, evaluate whether the output is accurate, and recognize when a confident-sounding answer is wrong. Generative models hallucinate citations, misread context, and flatter users' assumptions. A lawyer who submits an AI-fabricated case citation, as happened in the widely reported *Mata v. Avianca* incident, has not been replaced by technology; she has been exposed by her failure to exercise professional judgment. Verification and accountability remain human responsibilities, and they grow more important as generated content proliferates.

This shift carries a real risk, however, especially for newcomers. Entry-level knowledge work has traditionally served as an apprenticeship: junior analysts learn by drafting memos, and junior developers learn by fixing small bugs. If AI absorbs these tasks, organizations must find new ways to develop expertise, or they will face a shortage of seniors who can supervise the machines. Companies that treat AI purely as a cost-cutting tool may hollow out their own talent pipelines.

Critics argue that capabilities are improving so quickly that even judgment-heavy work will eventually be automated. That possibility cannot be dismissed. But history suggests that automation tends to redefine occupations rather than erase them. Spreadsheets did not eliminate accountants; they eliminated hours of arithmetic and expanded what accountants were expected to analyze.

The wise response is neither panic nor complacency. Workers should build skills in problem framing, critical evaluation, and domain expertise. Employers should redesign roles and training around human oversight. Generative AI is a powerful lever, and like any lever, its effects depend on who is pulling it and how carefully they understand what they are moving.

Show the full input

438 words (input 434)

Generative AI Will Reshape Knowledge Work, Not Replace It

Some say generative AI will replace analysts, programmers, and writers. Others say generative AI is overhyped autocomplete. Both miss an important point. Generative AI will have a transformative effect on knowledge work, but it’s more useful to think of it as a powerful tool that requires judgment and expertise to get the most out of it.

Generative AI will make it possible to automate tasks that have been considered knowledge work for years. Workers will increasingly use generative AI to summarize documents, draft emails, and write boilerplate code and texts.

Generative AI has the potential to make workers more effective. MIT researchers found that those who were allowed to use ChatGPT completed writing tasks 40% faster than those that weren’t allowed to use it, and received higher quality ratings. GitHub reported that developers using its product, GitHub Copilot, complete coding tasks much faster than developers that don’t use Copilot.

As a result of generative AI, first drafts will be cheaper to create. The value of a document or code won’t be in writing it down, it’ll be in ensuring it’s accurate and applicable. Humans will be responsible for figuring out what needs to be written down, checking facts, and flagging any errors.

That’s because generative AI makes mistakes, misses context, and echoes user biases. Recently, a lawyer in the case of Mata v. Avianca included an AI-generated, but non-existent, case in her legal submission. Generative AI revealed her lack of judgment, she wasn’t replaced, but exposed. As generative AI floods the world with content, judgment and accountability will be more important.

Some say generative AI is so advanced that it can replace entry-level knowledge workers, threatening the pipelines that promote talented workers into leadership positions. For example, junior developers fix bugs, junior analysts draft memos, and learn the craft. Generative AI may be able to fix bugs and draft memos, but can’t promote talented workers. If companies use generative AI as a way to cut costs, they’ll struggle to find qualified leaders down the line.

Spreadsheets didn’t replace accountants. Yes, they removed the drudgery of calculating by hand, which meant accountants could focus on higher-level analysis. Generative AI will be a similar leap forward, expanding what’s possible for those that wield it.

Generative AI will transform knowledge work. Those that can frame problems and critically assess AI-generated information will be rewarded for their judgment and domain expertise. Organizations should revisit how they develop talent and structure roles to maximize generative AI’s capabilities. Generative AI is a powerful tool. But like any tool, its effect depends on who wields it.

Show the full output
  • GPTZero1.00passed
  • Pangram0.41caught
  • Winston AI1.00passed
  • ZeroGPT0.81passed
  • Copyleaks1.00passed
  • Originality.ai0.98passed

Passed 5 of 6 detectors.

Every StealthGPT run in October 2026 →

560 words (input 434)

Generative AI is going to completely alter (restructure) knowledge work. While it will make many aspects of our jobs easier (and potentially less time consuming), it will also create the opportunity for us to be judged for our decision making and judgment.

These are just some examples of things that AI does well:

generating boilerplate code drafting emails summarizing documents creating initial drafts of most types of written content

All of these tasks used to take up a significant amount of a worker's time. Research done at MIT showed that employees who use ChatGPT to assist with writing tasks finish their assignments about 40% faster and have higher quality ratings. Similar results have been seen from research done at GitHub regarding developers and the task completion times with and without the assistance of Copilot. The closer we get to a point where generating a first draft costs nothing, the less valuable the first draft becomes. What takes on greater importance is all the other steps involved in creating a final product. Who determines if there is enough justification to pursue a particular issue? Does the user recognize when a system is providing a false confidence in its ability to provide an answer?

One of the problems with generative AI is that it often generates information based upon the assumption that the user wants "right" answers. This means it sometimes provides false citations, misreads contextual clues provided in the question, and/or makes flattering assumptions based upon the input provided. In addition, a lawyer who provides a court citation produced by AI in an effort to support his argument, such as was demonstrated in the recent *Mata v. Avianca* court case, has not lost their job due to the introduction of AI into their profession. Rather, the lawyer failed to utilize their analytical skills when reviewing their potential argument before presenting it to a judge. Verifying accuracy and being accountable for one's actions remains the responsibility of humans. As the volume of generated material increases, so too does this responsibility.

There is a very real concern related to this trend, particularly concerning entry level professionals. Traditionally, entry-level positions within a field have acted as an educational experience for young professionals. Junior analysts learn by drafting memos and junior developers learn by identifying and correcting errors in programs. With AI absorbing much of this type of work, companies will need to identify new methods to train professionals or else they will lose the individuals who know how to supervise these systems. Companies that view AI as solely a method to cut costs may end up eliminating their own talent pipeline.

Another criticism is that improvements in capability are happening rapidly enough that even areas that require high levels of judgment will be able to be automated. This is certainly possible. However, historical trends suggest that while automation replaces many of the rote, repetitive tasks associated with a position, it rarely eliminates an entire occupation. Spreadsheets did not replace accountants; instead they reduced the number of hours spent performing arithmetic and increased what accountants needed to analyze.

As always, the best way to respond to innovation is not with either panic or complacency. Professionals should focus on developing their abilities in problem identification and analysis; critical evaluation; and area-specific expertise. Organizations should design new roles and training opportunities focused on human oversight of AI.

Show the full output
  • GPTZero1.00passed
  • Pangram0.00caught
  • Winston AI1.00passed
  • ZeroGPT0.89passed
  • Copyleaks1.00passed
  • Originality.ai0.99passed

Passed 5 of 6 detectors.

Every Walter Writes 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 StealthGPT better than Walter Writes?

StealthGPT finished 11.0 points ahead of Walter Writes in the October 2026 cycle, 74.50 to 63.53, ranking #2 against #10 in a field of 14. StealthGPT scored higher on 5 of 6 detectors and 6 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, StealthGPT or Walter Writes?

StealthGPT posted the higher bypass rate, 88.1 vs 72.8, and scored higher on 5 of 6 detectors. StealthGPT led on GPTZero, Originality.ai, Copyleaks, ZeroGPT and Pangram; Walter Writes led on Winston AI.

Do StealthGPT and Walter Writes keep the original meaning?

Walter Writes preserved meaning better, 70.4 vs 61.8 on our 0–100 similarity scale. On readability, StealthGPT rated higher, 72.6 vs 63.5. Penalties this cycle: StealthGPT −3.0, Walter Writes −9.0.