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October 2026 results: WriteHuman holds #1, StealthGPT jumps to #2. Read the analysis →
HumanizerBench
Not in the current cycle. Data shown is from cycle September 2026, the most recent cycle where both Penlify and Walter Writes were tested together.

Head to head · September 2026 cycle

Penlify vs Walter Writes

Walter Writes finished 25.1 points ahead of Penlify in the September 2026 cycle, 61.70 to 36.57, ranking #10 against #14 in a field of 14. Walter Writes scored higher on 5 of 5 detectors and 7 of 7 writing categories. Penlify came out ahead on penalties (−5.0 vs −12.0), consistency across categories (100.0 vs 74.9) and readability (71.8 vs 60.4).

36.57 /100
overall score
#14 /14
rank -
+25.13
Walter Writes leads →
Detectors
0 – 5
Categories
0 – 7
Components
3 – 2
61.70 /100
overall score
#10 /14
rank ▼ 1

33 prompts · Last tested · Methodology v1.2.0

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 →

Bypass rate Walter Writes by 83.9
0.0 83.9
Meaning preservation CIs overlap Walter Writes by 3.9
62.7 66.6
Readability Penlify by 11.4
71.8 60.4
Consistency Penlify by 25.1
100.0 74.9
Penalties fewer is better Penlify by 7.0
−5.0 −12.0

CIs overlap marks a gap that sits inside both tools' published 95% confidence intervals for that component; it may not survive another cycle.

Detector by detector

Share of each tool's outputs that a detector classified as human-written. Walter Writes took 5 of 5.

GPTZero Walter Writes by 78.3
0.0 78.3
Originality.ai Walter Writes by 84.5
0.0 84.5
Copyleaks Walter Writes by 59.1
0.0 59.1
Winston AI Walter Writes by 66.6
0.4 67.0
ZeroGPT Walter Writes by 32.9
43.0 76.0

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 →

Academic Essay Application Essay Blog Post Business Email Marketing Copy Discussion Board News Article Academic Essay: Penlify 27.0 · Walter Writes 47.9 Application Essay: Penlify 35.9 · Walter Writes 57.3 Blog Post: Penlify 37.3 · Walter Writes 70.8 Business Email: Penlify 39.9 · Walter Writes 54.1 Marketing Copy: Penlify 38.8 · Walter Writes 45.3 Discussion Board: Penlify 32.1 · Walter Writes 74.4 News Article: Penlify 36.6 · Walter Writes 49.8
Penlify Walter Writes Outer ring = 100
Academic Essay 6 prompts Walter Writes by 20.9
27.0 47.9
Application Essay 6 prompts Walter Writes by 21.4
35.9 57.3
Blog Post 6 prompts Walter Writes by 33.5
37.3 70.8
Business Email 3 prompts Walter Writes by 14.2
39.9 54.1
Marketing Copy 6 prompts Walter Writes by 6.4
38.8 45.3
Discussion Board 3 prompts Walter Writes by 42.3
32.1 74.4
News Article 3 prompts Walter Writes by 13.2
36.6 49.8

Where each one wins

Every measure above that one tool won outright, largest margin first within each group.

Penlify

3 wins
  • Penalties Score −5.0 vs −12.0
  • Consistency Score 100.0 vs 74.9
  • Readability Score 71.8 vs 60.4

Walter Writes

14 wins
  • Bypass rate Score 83.9 vs 0.0
  • Meaning preservation Score 66.6 vs 62.7
  • Originality.ai Detector 84.5 vs 0.0
  • GPTZero Detector 78.3 vs 0.0
  • Winston AI Detector 67.0 vs 0.4
  • Copyleaks Detector 59.1 vs 0.0
  • ZeroGPT Detector 76.0 vs 43.0
  • Discussion Board Category 74.4 vs 32.1
  • Blog Post Category 70.8 vs 37.3
  • Application Essay Category 57.3 vs 35.9
  • and 4 more

Same prompt, both outputs

Both tools were given this AI-written passage in the September 2026 cycle. Below it is what each one returned. This prompt was picked by a fixed rule, not by how the tools scored.

Listicle Blog · Blog Post · written by Gemini 3.5 Flash · 476 words

**10 Tips for Houseplants for Low-Light Apartments**

Living in a cozy apartment with windows that face... well, another brick wall? We’ve all been there. It’s easy to get major plant envy scroll-deep on Instagram, looking at sun-drenched urban jungles. But don’t throw in the trowel just yet! You don't need a greenhouse to be a successful plant parent.

Here are 10 super chill tips to help your leafy roommates thrive in your low-light sanctuary.

### 1. Pick the Right Crew First things first: leave the succulents at the nursery. Instead, go for low-light legends. Snake plants, ZZ plants, cast-iron plants, and pothos are practically indestructible and actually prefer the dim life.

### 2. Put Them on a Water Diet Less light means your plants take longer to "drink" their water. Before you grab the watering can, stick your finger two inches into the soil. If it’s wet, step away. Overwatering is the number one killer of low-light plants.

### 3. Dust Those Leaves When light is scarce, your plants need to absorb every single drop they can get. Dust acting as a shield doesn't help. Give their leaves a gentle wipe with a damp cloth every couple of weeks so they can photosynthesize like bosses.

### 4. Mirror, Mirror on the Wall Want to double your light without buying a new lamp? Hang a mirror opposite your window. It bounces the natural light around the room, giving your plants a sneaky little boost.

### 5. Keep ‘Em Clean and Yellow-Free If a leaf turns yellow or brown, snip it off. Your plant is wasting precious energy trying to save a dying leaf. Let it focus its limited resources on the healthy parts!

### 6. Rotate for Even Tans Plants will naturally stretch toward whatever light is available (a dramatic look called etiolation). Give your pots a quarter-turn every week so they grow nice and symmetrical, rather than doing a weird lean.

### 7. Think White and Bright If you’re repainting or buying pots, opt for light colors. White, cream, or pastel pots and walls reflect light, helping to brighten up those dim corners.

### 8. Fake It with Grow Lights No natural light? No problem. You don't need ugly industrial setups anymore. You can buy stylish LED grow bulbs that fit right into your favorite desk lamps. Your plants won’t know the difference!

### 9. Ditch the Heavy Fertilizer Plants in low light grow much slower, meaning they don’t need much food. Only fertilize once or twice during the spring and summer, and skip it entirely in the winter.

### 10. Group Your Greenies Grouping your plants together doesn't just look cute; it actually creates a microclimate with higher humidity. Plants "breathe" out moisture, so keeping them close helps prevent crispy, brown edges.

See? You don’t need a sunroom to have a green thumb. Happy planting!

Show the full input

356 words (input 476)

Living in a cramped flat where your only window faces a solid brick wall? We've all been there. Instagram makes it look like everyone lives in a sun-drenched jungle, but honestly, you don't need a greenhouse just to keep a few plants alive.

Start with species that actually prefer shade. Forget succulents (they will just rot and wither). Instead, grab a snake plant, a ZZ, cast-iron plant, or a simple pothos. They are tough enough to handle dim light without throwing a fit.

Low light changes how you water. Roots drink moisture much slower without full sun, so poke a finger two inches into the dirt before grabbing the watering can. Still damp? Wait a few days. Overwatering kills way more indoor plants than darkness ever will.

Dust is a sneaky thief. Grimy leaves can't absorb photons, so wiping them down with a damp cloth every couple of weeks lets them breathe again.

You can actually cheat the system with mirrors. If you hang one right across from the window, it bounces whatever daylight you do get deeper into the room. It is a cheap trick, but it gives your foliage a solid extra glow.

Notice a yellow or brown leaf? Chop it off. Your plant wastes energy trying to salvage dying parts, so cutting them away frees up resources for fresh growth.

Rotate your pots a quarter-turn every week or so. Stems instinctively reach toward whatever light exists, but regular turns stop them from ending up totally lopsided.

Go bright when picking pots or painting walls. White, cream, or pastel surfaces reflect what little light you have, brightening up the whole corner.

Zero natural sun? Not a problem. Screw a sleek LED grow bulb into a regular desk lamp and your plants won't even notice the difference.

Feed them sparingly. Dim conditions slow down growth, so fertilize once or twice during spring and summer, then skip it entirely through winter.

Try clustering your greens together. Grouping them creates a tiny humid microclimate, and that shared moisture keeps leaf edges from turning crispy.

See? You don't need a sunroom to have a green thumb. Happy planting!

Show the full output
  • GPTZero0.00caught
  • Winston AI0.00caught
  • ZeroGPT0.25caught
  • Copyleaks0.00caught
  • Originality.ai0.00caught

Passed 0 of 5 detectors.

Every Penlify run in September 2026 →

548 words (input 476)

**Low Light Apartment Plant Tips #1 – 10**

We've all seen those beautiful Instagram posts of lush, tropical spaces that seem impossible to replicate indoors due to lack of sunlight. Yet, this shouldn't stop you from having your own mini jungle. The following 10 easy-to-implement ideas will assist you in growing happy houseplants even when you're living in an apartment with very little natural light.

### 1. Choose Low-Light Plants There's no need to bring home a cactus if your home is dark most of the time. Use plants which do better in low light. Examples include snake plants, pothos, cast-iron plants, and ZZ plants. They love being left alone in shady spots.

### 2. Water Less Frequently Since your plants receive less sunlight, they will also need to drink their water less frequently. To determine whether your plants require a drink, insert a finger two inches deep into the soil. If the soil feels wet, wait until it has dried slightly before watering again. Remember, overwatered low-light plants will likely die.

### 3. Wipe Down Those Leaves When plants are receiving low amounts of light, it becomes necessary for them to use what little light they can get. A dusty leaf acts as a barrier to light absorption by the plant. Each couple of weeks gently remove dust using a damp cloth. This allows your plants to photosynthesize normally.

### 4. Place Mirrors Wisely You can increase the amount of light entering your space by placing mirrors across from your windows. These mirrors bounce the available light around the room allowing additional areas of your space to receive some benefit from the minimal lighting present.

### 5. Remove Dead/Dying Leaves A dead/dying leaf takes a lot of energy from a plant. When a leaf changes color to yellow or brown, remove it. Allow your plant to allocate its limited resources to the healthy leaves.

### 6. Rotate for Symmetry Plants may develop uneven growth patterns by stretching towards any available light. Every week give each pot a 90-degree turn so they develop evenly throughout.

### 7. Choose Light Colors Choose white or lighter colored paint for walls and furniture to create a brighter atmosphere. In addition, choose white or pastel-colored planters/pots. Both types of surfaces allow reflected light to illuminate darker areas of your home.

### 8. Add Artificial Lighting If you cannot provide adequate natural lighting for your plants, you now have options beyond expensive commercial artificial lighting systems. Today you can purchase fashionable and modern LED grow bulbs that fit into existing table lamps. Your plants will have no idea where their supplemental lighting came from!

### 9. Reduce Fertilizing Frequency In comparison to plants grown outdoors in full-sun conditions, indoor plants typically grow significantly slower and thus require fewer nutrients. As such, reduce fertilizer frequency to once or twice per year (spring/summer) and eliminate fertilization altogether in the winter months.

### 10. Grow More Than One! Although aesthetically pleasing, grouping multiple plants together does something else beneficial for your plants. Indoor humidity levels are increased due to the transpiration process of plants releasing moisture through the stomata located on the underside of their leaves. By clustering several potted plants near each other, you’ll create an environment conducive to healthier-looking plants with fewer brown leaves.

Show the full output
  • GPTZero1.00passed
  • Winston AI1.00passed
  • ZeroGPT0.59passed
  • Copyleaks0.00caught
  • Originality.ai0.90passed

Passed 4 of 5 detectors.

Every Walter Writes run in September 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 Penlify better than Walter Writes?

Walter Writes finished 25.1 points ahead of Penlify in the September 2026 cycle, 61.70 to 36.57, ranking #10 against #14 in a field of 14. Walter Writes 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, Penlify or Walter Writes?

Walter Writes posted the higher bypass rate, 83.9 vs 0.0, and scored higher on 5 of 5 detectors. Walter Writes led on GPTZero, Originality.ai, Copyleaks, Winston AI and ZeroGPT.

Do Penlify and Walter Writes keep the original meaning?

Walter Writes preserved meaning better, 66.6 vs 62.7 on our 0–100 similarity scale, though the confidence intervals overlap. On readability, Penlify rated higher, 71.8 vs 60.4. Penalties this cycle: Penlify −5.0, Walter Writes −12.0.