AI Humanizer BenchmarkLeaderboard / Compare / HIX Bypass vs UndetectedGPT
Head to head · October 2026 cycle
HIX Bypass vs UndetectedGPT
On the October 2026 leaderboard, UndetectedGPT leads HIX Bypass 88.12 to 83.87, a gap of 4.25 points. UndetectedGPT ranks #1 and HIX Bypass ranks #2 out of 11 tools. UndetectedGPT scores higher on 3 of 7 detectors and in 6 of 7 writing categories. HIX Bypass is ahead on meaning preservation (77.9 vs 77.4), Copyleaks (81.8 vs 78.8) and ZeroGPT (94.7 vs 92.3). On bypass rate, HIX Bypass scores 93.5% and UndetectedGPT scores 96.0%, but their 95% confidence intervals overlap, so that difference is not statistically clear.
- Detectors
- 4 – 3
- Categories
- 1 – 6
- Components
- 1 – 3
- Last tested
- Prompts
- 33
- Methodology
- v1.1.0
Score components
The overall score weights bypass rate at 42%, meaning preservation at 32%, readability at 16% and consistency across writing categories at 10%. Penalties for output-quality failures are then subtracted. Full scoring formula
Overlapping CIs means the two tools' 95% confidence intervals for bypass rate overlap, so the bypass difference is not statistically clear.
Detector by detector
Each figure is one detector's average human-likelihood score across all of a tool's outputs, on a 0–100 scale. Higher means more human. HIX Bypass scores higher on 4 of 7 detectors.
Writing categories
Each category score applies the overall-score weights to that category's prompts only. Bypass, meaning preservation and readability are averaged within the category, and the tool's overall consistency score is added. Penalties are not subtracted. Categories with few prompts give less reliable scores, so each row shows its prompt count.
Where each one wins
Measures where one tool is ahead of the other. Ties are left out. Score components come first, then detectors, then categories, with the largest gap first in each group.
HIX Bypass
6 wins- Meaning preservation Score77.9 vs 77.4
- Copyleaks Detector81.8 vs 78.8
- ZeroGPT Detector94.7 vs 92.3
- QuillBot Detector93.4 vs 91.0
- Winston AI Detector86.6 vs 84.4
- Marketing copy Category84.1 vs 84.0
UndetectedGPT
12 wins- Readability Score83.6 vs 64.3
- Consistency Score96.6 vs 93.9
- Bypass rate Score96.0 vs 93.5
- GPTZero Detector72.0 vs 4.0
- Grammarly Detector96.8 vs 88.9
- Originality.ai Detector96.7 vs 89.1
- Application essay Category88.1 vs 80.2
- News article Category92.4 vs 86.4
- Blog post Category87.9 vs 83.0
- Business email Category84.3 vs 79.8
- Academic essay Category90.5 vs 86.4
- Discussion board Category91.7 vs 89.0
Questions people ask
Is HIX Bypass better than UndetectedGPT?
On the October 2026 leaderboard, UndetectedGPT has an overall score of 88.12 and HIX Bypass has 83.87, a gap of 4.25 points. UndetectedGPT ranks #1 and HIX Bypass ranks #2 out of 11 tools. UndetectedGPT scores higher on 3 of 7 detectors and in 6 of 7 writing categories. Both tools rewrote the same 33 prompts, the same 7 detectors checked every output, and scoring followed methodology v1.1.0. All inputs, outputs and detector verdicts are public.
Which bypasses AI detectors better, HIX Bypass or UndetectedGPT?
UndetectedGPT has the higher bypass rate, 96.0% vs 93.5% for HIX Bypass. UndetectedGPT scores higher on GPTZero, Originality.ai and Grammarly. HIX Bypass scores higher on Winston AI, ZeroGPT, QuillBot and Copyleaks. The two tools' 95% confidence intervals for bypass rate overlap, so the difference is not statistically clear.
Do HIX Bypass and UndetectedGPT keep the original meaning?
Meaning preservation measures how close each output stays to its input, using embedding similarity on a 0–100 scale. HIX Bypass scores 77.9 and UndetectedGPT scores 77.4. On readability, UndetectedGPT scores higher, 83.6 vs 64.3. Neither tool had penalties this cycle.