Head to head · October 2026 cycle
Undetectable.ai vs WriteHuman
WriteHuman finished 3.7 points ahead of Undetectable.ai in the October 2026 cycle, 74.89 to 71.18, ranking #1 against #3 in a field of 14. WriteHuman scored higher on 6 of 6 detectors and 5 of 6 writing categories. Undetectable.ai came out ahead on meaning preservation (79.2 vs 60.0), readability (63.9 vs 55.9) and application essay prompts (76.4 vs 73.6).
- Detectors
- 0 – 6
- Categories
- 1 – 5
- Components
- 2 – 3
30 prompts · Last tested · Methodology v1.3.0
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 6 of 6.
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 5 of 5 shared cycles.
| Cycle | Undetectable.ai | WriteHuman | Margin |
|---|---|---|---|
| October 2026 | 71.18 #3 | 74.89 #1 | → 3.7 |
| September 2026 | 71.75 #6 | 78.29 #1 | → 6.5 |
| August 2026 | 61.49 #8 | 76.69 #1 | → 15.2 |
| July 2026 | 72.17 #2 | 73.07 #1 | → 0.9 |
| June 2026 | 80.09 #5 | 83.59 #2 | → 3.5 |
Where each one wins
Every measure above that one tool won outright, largest margin first within each group.
Undetectable.ai
3 wins- Meaning preservation Score 79.2 vs 60.0
- Readability Score 63.9 vs 55.9
- Application Essay Category 76.4 vs 73.6
WriteHuman
14 wins- Penalties Score None vs −5.0
- Bypass rate Score 88.8 vs 74.6
- Consistency Score 94.7 vs 93.0
- Pangram Detector 50.3 vs 3.5
- GPTZero Detector 99.5 vs 85.0
- Originality.ai Detector 100.0 vs 88.7
- ZeroGPT Detector 89.5 vs 83.8
- Copyleaks Detector 93.3 vs 87.9
- Winston AI Detector 100.0 vs 98.5
- News Article Category 77.9 vs 61.4
- and 4 more
Same prompt, both outputs
Both tools were given this AI-written passage in the October 2026 cycle. Below it is what each one returned. This prompt was picked by a fixed rule, not by how the tools scored.
AI-written input
Every tool on this prompt →Landing Copy · Marketing Copy · written by claude-sonnet-5-5 · 293 words
# Grow Your First Garden. Without the Guesswork.
## SproutPlan helps you plant, tend, and harvest your own backyard vegetables, step by step.
You've pictured it: tomatoes ripening on the vine, fresh basil a few steps from the kitchen, dinner pulled straight from your own yard. But where do you start? How much sun do you need? When do you plant? Why did last year's lettuce bolt?
SproutPlan answers every question, built around your yard and your schedule.
---
### Your Garden, Designed in Minutes
Tell us your zip code, your space, and how much sun you get. SproutPlan creates a custom garden layout with the right vegetables for your climate, spaced correctly and grouped with companion plants that help each other thrive.
### Know Exactly What to Do, and When
Get a personalized calendar with simple reminders for sowing, watering, feeding, and harvesting. Our frost-date alerts protect your seedlings before the weather turns.
### Fix Problems Fast
Yellow leaves? Strange spots? Snap a photo and get a diagnosis with clear, organic treatment options. No more late-night forum scrolling.
### Built for Beginners, Loved by Growers
- **Smart plant recommendations** matched to your skill level - **Weekly checklists** that take 15 minutes or less - **Harvest tracking** to see what worked and plan next season - **Budget estimator** so you know costs before you buy a single seed
---
> "I'd killed every plant I'd ever owned. Three months with SproutPlan and I'm giving zucchini to the neighbors." — Dana R., first-time gardener
---
### Start Free for 14 Days
No credit card required. Build your garden plan today and plant with confidence this weekend.
**[Start My Garden]**
Plans from $6/month after your trial. Cancel anytime.
*Your backyard is ready. Let's grow something.*
Show the full input Show less
372 words (input 293)
# Grow Your First Garden. Without the Guesswork.
## A Simple Way To Grow Your Own First Garden
Whether you can envision a lush bed of ripening tomatoes or a small container of fresh basil on a windowsill right outside your kitchen door, SproutPlan will guide you in planning and caring for your first vegetable garden. We will guide you as to how much sun your garden will need and when to plant individual vegetables throughout the growing season.
No more questions - SproutPlan has got them all answered for you, to help you grow your very own garden as easily as possible!
---
### Your Garden, Designed in Minutes
Based on your zip code and yard space, SproutPlan generates a customized plan and maps out the best types of vegetables for your climate. The plants are properly spaced to ensure healthy growth and are grouped with other companion plants that will assist in the growth and health of your garden.
### Know Exactly What to Do, and When
Our personalized calendar lays out the simple steps you need to take to grow your plants. Reminders for watering, fertilizing and more will pop up at the right time, and alerts about frost dates will keep you from losing a batch of seedlings to early snowfall.
### Fix Problems Fast
We know plants can get sick too – Yellow leaves? Strange spots? Help me fix my plants by uploading a photo and receive organic & chemical-free treatment solutions within minutes.
### Built for Beginners, Loved by Growers
- **Smart plant recommendations** matched to your skill level - **Weekly checklists** that take 15 minutes or less - **Harvest tracking** to see what worked and plan next season - **Budget estimator**: estimate the cost of starting a new garden.
---
> "I'd killed every plant I'd ever owned. Three months with SproutPlan and I'm giving zucchini to the neighbors." — Dana R., first-time gardener
---
### Start Free for 14 Days
No credit card required. Start your 14 day free trial and begin planning your garden today. Start Your Garden ($6/month after your 14 day free trial).
**[Start My Garden]**
Plans from $6/month after your trial. Cancel anytime.
*Your backyard is ready. Let's grow something.*
Show the full output Show less
- GPTZero1.00passed
- Pangram0.00caught
- Winston AI1.00passed
- ZeroGPT0.83passed
- Copyleaks1.00passed
- Originality.ai0.11caught
Passed 4 of 6 detectors.
Every Undetectable.ai run in October 2026 →292 words (input 293)
Grow Your Own Food This Year!
Start to finish SproutPlan has you covered to grow fresh vegetables in your backyard.
Have you thought about what you want your garden to look like? Have you imagined the smell of fresh basil or the sight of your own homegrown tomatoes?
Maybe you’re having trouble remembering what you learned last year about how much sun your plants need or when the best time is to plant your vegetable seeds. SproutPlan helps you with your yard and on your schedule.
SproutPlan will help you plan your garden and design it for you. All you need to do is tell us your location, how much space you want to use, and how much sun your space gets. After that, SproutPlan will do the rest!
You will get a personalized planting, care, and harvest calendar. The calendar will even help you with the anticipated date of your first frost.
You will get an organic treatment for your plants with pictures you take and send us. No more late night internet searches!
There are no guessing games or last minute internet searches with SproutPlan!
### Designed with New Planters in Mind, Forever Growers' Choice
- Get smart suggestions for plants based on your skill level
- Recieve a 15 minute or less, detailed plant care plan, every week
- Keep a record of your plant harvest to help you plan what to grow next
- Determine your plant budget to help plan your spending
---
> “I killed every plant I owned. After 3 months I was giving the neighborhod zucchini.” - Dana R. (first time planter) ---
- No credit card required. Cancel any time
- 14 day free trial
- Plans for as low as $6/ month
Show the full output Show less
- GPTZero1.00passed
- Pangram0.00caught
- Winston AI1.00passed
- ZeroGPT0.95passed
- Copyleaks1.00passed
- Originality.ai1.00passed
Passed 5 of 6 detectors.
Every WriteHuman run in October 2026 →Each chip is one detector's score for that output, from 0 (AI) to 1 (human). A score of 0.50 or higher counts as a pass and shows green; below that the detector caught it and the chip shows red.
Questions people ask
Is Undetectable.ai better than WriteHuman?
WriteHuman finished 3.7 points ahead of Undetectable.ai in the October 2026 cycle, 74.89 to 71.18, ranking #1 against #3 in a field of 14. WriteHuman scored higher on 6 of 6 detectors and 5 of 6 writing categories. Both tools ran the same 30 prompts, scored by the same 6 detectors, under methodology v1.3.0; every input, output and verdict is published.
Which bypasses AI detectors better, Undetectable.ai or WriteHuman?
WriteHuman posted the higher bypass rate, 88.8 vs 74.6, and scored higher on 6 of 6 detectors. WriteHuman led on GPTZero, Originality.ai, Copyleaks, Winston AI, ZeroGPT and Pangram.
Do Undetectable.ai and WriteHuman keep the original meaning?
Undetectable.ai preserved meaning better, 79.2 vs 60.0 on our 0–100 similarity scale. On readability, Undetectable.ai rated higher, 63.9 vs 55.9. Penalties this cycle: Undetectable.ai −5.0, WriteHuman None.