September 2026 review · ZeroGPT default
Best AI humanizer for ZeroGPT
In the September 2026 HumanizerEval review, 7 tools tied for the best ZeroGPT default result, passing 100% of texts. All 10 tools rewrote the same 50 English texts, and every output went to every detector in the panel. Review our full results for the best AI humanizer on the leaderboard page.
ZeroGPT results, September 2026
| Humanizer | Strict bypass | Texts passed | Mean human score | Median human score |
|---|---|---|---|---|
| BypassGPT | 100% | 50 of 50 | 97.2% | 100% |
| Humbot | 100% | 50 of 50 | 96.7% | 100% |
| HIX Bypass | 100% | 50 of 50 | 96.5% | 100% |
| Grubby | 100% | 50 of 50 | 96.0% | 100% |
| Undetectable.ai | 100% | 50 of 50 | 95.0% | 100% |
| WriteHuman | 100% | 49 of 49 | 94.8% | 98.2% |
| Rephrasy | 100% | 50 of 50 | 92.7% | 100% |
| StealthGPT Super | 98% | 49 of 50 | 91.1% | 97.2% |
| RewriteAI | 88% | 44 of 50 | 77.3% | 86.95% |
| Ryne | 62% | 31 of 50 | 56.6% | 59.65% |
What is ZeroGPT?
ZeroGPT is a free AI-text detector built on what the company calls DeepAnalyse™ Technology, which it describes as a multi-stage method working “from the macro level to the micro one,” trained with deep learning on internet text, educational datasets and its own synthetic AI datasets. It says it covers more than 20 LLM families, naming GPT-3 through GPT-6, Gemini, Grok, Perplexity, Claude, DeepSeek and LLaMa, and claims 98.4% accuracy with a false positive rate under 1%, with no test set or methodology published alongside those numbers. ZeroGPT discloses less than any other detector in the HumanizerEval panel: its site names no company entity, headquarters, founder or model version, lists no institutional customers, and cites no independent evaluation. It is in the panel because both other public humanizer benchmarks test it, which makes it the detector where our results can be compared against theirs most directly.
How ZeroGPT compares with the rest of the panel
Across the 10 tools tested in September 2026, the average strict-bypass rate on ZeroGPT was 95%, against 32% on Pangram, 76% on GPTZero, 76% on Originality.ai and 92% on Winston AI, on the same texts.
Sources
- ZeroGPT
- HumanizerEval September 2026 review archive: frozen results and downloads
ZeroGPT FAQ
Which AI humanizer is best for ZeroGPT?
In September 2026, 7 tools tied for the best ZeroGPT default result, passing 100% of texts.
Does Humbot bypass ZeroGPT?
Yes. In September 2026, Humbot passed ZeroGPT default on 50 of 50 texts (100%). Its mean human score was 96.7% and its median was 100%.
Does HIX Bypass bypass ZeroGPT?
Yes. In September 2026, HIX Bypass passed ZeroGPT default on 50 of 50 texts (100%). Its mean human score was 96.5% and its median was 100%.
Does Grubby bypass ZeroGPT?
Yes. In September 2026, Grubby passed ZeroGPT default on 50 of 50 texts (100%). Its mean human score was 96.0% and its median was 100%.
Does Undetectable.ai bypass ZeroGPT?
Yes. In September 2026, Undetectable.ai passed ZeroGPT default on 50 of 50 texts (100%). Its mean human score was 95.0% and its median was 100%.
Does WriteHuman bypass ZeroGPT?
Yes. In September 2026, WriteHuman passed ZeroGPT default on 49 of 49 texts (100%). Its mean human score was 94.8% and its median was 98.2%.
Does Rephrasy bypass ZeroGPT?
Yes. In September 2026, Rephrasy passed ZeroGPT default on 50 of 50 texts (100%). Its mean human score was 92.7% and its median was 100%.
Does StealthGPT Super bypass ZeroGPT?
Yes. In September 2026, StealthGPT Super passed ZeroGPT default on 49 of 50 texts (98%). Its mean human score was 91.1% and its median was 97.2%.
Does RewriteAI bypass ZeroGPT?
No. In September 2026, RewriteAI passed ZeroGPT default on 44 of 50 texts (88%). Its mean human score was 77.3% and its median was 86.95%.
Does Ryne bypass ZeroGPT?
No. In September 2026, Ryne passed ZeroGPT default on 31 of 50 texts (62%). Its mean human score was 56.6% and its median was 59.65%.
Is ZeroGPT more accurate than the other detectors?
No. HumanizerEval measures how often humanized text passes a detector, not how accurate that detector is on unmodified writing. Those are different questions. On accuracy, the Jabarian and Imas study (NBER working paper 34223) found Pangram near zero on both false positives and false negatives, GPTZero under 1% false positives, and Originality.ai missing 10 to 40% of AI text depending on the generator. Winston AI was not in that study.