AI Humanizer BenchmarkLeaderboard / Compare / GPTinf vs Undetectable AI
Head to head · October 2026 cycle
GPTinf vs Undetectable AI
On the October 2026 leaderboard, GPTinf leads Undetectable AI 80.74 to 33.60, a gap of 47.14 points. GPTinf ranks #3 and Undetectable AI ranks #11 out of 11 tools. GPTinf scores higher on all 7 detectors and in all 7 writing categories. Undetectable AI is ahead on consistency (97.8 vs 92.1) and meaning preservation (72.9 vs 68.3).
- Detectors
- 7 – 0
- Categories
- 7 – 0
- Components
- 3 – 2
- 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
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. GPTinf scores higher on all 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.
GPTinf
17 wins- Bypass rate Score88.7 vs 1.8
- Penalties ScoreNone vs −12.0
- Readability Score77.7 vs 73.2
- Originality.ai Detector92.2 vs 3.8
- Winston AI Detector89.1 vs 3.0
- QuillBot Detector86.4 vs 14.5
- Grammarly Detector88.4 vs 20.6
- Copyleaks Detector57.6 vs 1.5
- ZeroGPT Detector84.5 vs 34.5
- GPTZero Detector55.1 vs 12.0
- Discussion board Category84.0 vs 39.0
- Academic essay Category81.9 vs 39.6
- Marketing copy Category81.1 vs 43.9
- Application essay Category79.7 vs 44.5
- News article Category84.1 vs 51.7
- Business email Category79.2 vs 49.0
- Blog post Category77.6 vs 53.0
Undetectable AI
2 wins- Consistency Score97.8 vs 92.1
- Meaning preservation Score72.9 vs 68.3
Questions people ask
Is GPTinf better than Undetectable AI?
On the October 2026 leaderboard, GPTinf has an overall score of 80.74 and Undetectable AI has 33.60, a gap of 47.14 points. GPTinf ranks #3 and Undetectable AI ranks #11 out of 11 tools. GPTinf scores higher on all 7 detectors and in all 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, GPTinf or Undetectable AI?
GPTinf has the higher bypass rate, 88.7% vs 1.8% for Undetectable AI. It scores higher on all 7 detectors. The two tools' 95% confidence intervals for bypass rate do not overlap.
Do GPTinf and Undetectable AI keep the original meaning?
Meaning preservation measures how close each output stays to its input, using embedding similarity on a 0–100 scale. Undetectable AI scores 72.9 and GPTinf scores 68.3. On readability, GPTinf scores higher, 77.7 vs 73.2. This cycle, GPTinf had no penalties and Undetectable AI lost 12.0 points to penalties.