October 2026 Benchmark Results
Stealth Writer
Fourth overall in October at 69.4, with 78.5 for detector bypass, 76.1 for meaning preservation and 63.8 for readability.
Scorecard
By detector
How Stealth Writer performs against each detector we test.
| Detector | Score | Pass rate |
|---|---|---|
| Pangram | 73.9 | 74% |
| GPTZero | 80.2 | 80% |
| Originality.ai | 79.6 | 80% |
| Copyleaks | 78.4 | 78% |
| ZeroGPT | 80.5 | 81% |
At a glance
Stealth Writer sits 4.4 points behind Undetectable.ai and 0.7 points ahead of UndetectedGPT in the October overall ranking. Detector bypass at 78.5 is its strongest published component.
Detector results
Stealth Writer places sixth on all five detector-specific rankings. Its scores run from 73.9 against Pangram to 80.5 against ZeroGPT, with 80.2 for GPTZero, 79.6 for Originality.ai and 78.4 for Copyleaks.
The trade-off
The October table reports 76.1 for meaning preservation and 63.8 for readability. Readability is its weakest published component, and both quality measures trail the corresponding scores reported for the three tools above it overall.
Bottom line
Stealth Writer holds fourth place in a closely spaced part of the October table. Its detector scores are relatively even across the five reported services, but its readability result is the clearest limitation in the published data.
October 2026 results
The benchmark case for Stealth Writer
The current cycle places Stealth Writer fourth overall, with similar positions across all five reported detector rankings.
Overall: 69.4
Ranked #4 of 10 tools, 0.7 points ahead of fifth place.
Detector bypass: 78.5
The sixth-highest detector-bypass result in the October overall table.
Meaning: 76.1
Ranked #5 among the 10 October tools for meaning preservation.
Readability: 63.8
Ranked #6 among the 10 October tools for readability.
Related research
Explore Humanizer Arena research
See separate experiments and the site methodology for additional context.