Head to head · September 2026 cycle
Grammarly vs WriteHuman
WriteHuman finished 17.9 points ahead of Grammarly in the September 2026 cycle, 78.29 to 60.35, ranking #1 against #12 in a field of 14. WriteHuman scored higher on 5 of 5 detectors and 7 of 7 writing categories. Grammarly came out ahead on meaning preservation (86.4 vs 72.3) and readability (66.1 vs 56.9).
- Detectors
- 0 – 5
- Categories
- 0 – 7
- Components
- 2 – 3
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 →
Detector by detector
Share of each tool's outputs that a detector classified as human-written. WriteHuman took 5 of 5.
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 →
Head-to-head history
Overall score in every cycle both tools were tested. WriteHuman has finished ahead in 4 of 4 shared cycles.
| Cycle | Grammarly | WriteHuman | Margin |
|---|---|---|---|
| September 2026 | 60.35 #12 | 78.29 #1 | → 17.9 |
| August 2026 | 52.91 #11 | 76.69 #1 | → 23.8 |
| July 2026 | 53.38 #12 | 73.07 #1 | → 19.7 |
| June 2026 | 56.50 #12 | 83.59 #2 | → 27.1 |
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
Grammarly
2 wins- Meaning preservation Score 86.4 vs 72.3
- Readability Score 66.1 vs 56.9
WriteHuman
15 wins- Bypass rate Score 90.1 vs 41.1
- Penalties Score None vs −3.0
- Consistency Score 82.1 vs 78.7
- GPTZero Detector 71.8 vs 15.9
- Originality.ai Detector 91.4 vs 43.4
- Winston AI Detector 84.1 vs 38.9
- Copyleaks Detector 86.7 vs 60.3
- ZeroGPT Detector 77.8 vs 58.0
- Discussion Board Category 78.2 vs 44.5
- Marketing Copy Category 82.1 vs 56.5
- and 5 more
Questions people ask
Is Grammarly better than WriteHuman?
WriteHuman finished 17.9 points ahead of Grammarly in the September 2026 cycle, 78.29 to 60.35, ranking #1 against #12 in a field of 14. WriteHuman scored higher on 5 of 5 detectors and 7 of 7 writing categories. Both tools ran the same 33 prompts, scored by the same 5 detectors, under methodology v1.2.0; every input, output and verdict is published.
Which bypasses AI detectors better, Grammarly or WriteHuman?
WriteHuman posted the higher bypass rate, 90.1 vs 41.1, and scored higher on 5 of 5 detectors. WriteHuman led on GPTZero, Originality.ai, Copyleaks, Winston AI and ZeroGPT.
Do Grammarly and WriteHuman keep the original meaning?
Grammarly preserved meaning better, 86.4 vs 72.3 on our 0–100 similarity scale. On readability, Grammarly rated higher, 66.1 vs 56.9. Penalties this cycle: Grammarly −3.0, WriteHuman None.