AI Humanizer Benchmark
← October 2026 prompts

Business email

Business email · 229 words · prompt business_email

2
passed at least 6 detectors
10
failed at least one detector
11
tools tested on this prompt
Copyleaks
strictest detector here, flagged 10 of 11 rewrites

Input text

Written by Claude Haiku 4.5 for this cycle. Every tool below received this exact text.

Subject: Exciting New Commuter Benefit Program Hi Team, I'm thrilled to announce the launch of our new commuter benefit program, effective immediately. This initiative reflects our commitment to supporting your well-being and reducing your out-of-pocket transportation costs. **What's Included:** We now offer pre-tax commuter benefits for: - Public transit passes (bus, train, subway) - Bike-sharing memberships - Parking for bicycles…Show full input (229 words)
Subject: Exciting New Commuter Benefit Program Hi Team, I'm thrilled to announce the launch of our new commuter benefit program, effective immediately. This initiative reflects our commitment to supporting your well-being and reducing your out-of-pocket transportation costs. **What's Included:** We now offer pre-tax commuter benefits for: - Public transit passes (bus, train, subway) - Bike-sharing memberships - Parking for bicycles at our facilities **How It Works:** Eligible employees can set aside pre-tax dollars for these commuting expenses, reducing your taxable income and saving approximately 25-30% on transportation costs. There's a monthly contribution limit set by federal regulations, which will be outlined in the enrollment materials. **How to Enroll:** Details and enrollment instructions have been sent to your email. You can sign up through our benefits portal. Open enrollment begins tomorrow and runs for two weeks. Please complete your election by [specific date]. **Questions?** Our HR team will host two information sessions this week—details are in your inbox. You can also reach out directly at [HR email] with any questions. **Why This Matters:** Whether you're using public transit, cycling, or a combination, this benefit makes commuting more affordable while supporting our sustainability goals. We're investing in programs that enhance your quality of life. Thank you for your continued dedication to our organization. We look forward to seeing many of you take advantage of this new benefit. Best regards, [Your Name]

How to read these scores

Each detector's result is converted to a human-likelihood score between 0 and 1. A score of 0 means the detector is sure the text is AI. A score of 1 means it is sure the text is human. Dots are green at 0.50 or above and red below. Hover a dot to see its exact score. The 0.50 cut-off only sets the dot colors. A tool's bypass rate on the leaderboard takes the median of the 7 detector scores for each test, then averages those medians. That gives a continuous number, so it will not match the share of green dots. The same goes for each per-detector rate. It is the average of that detector's scores (the number detector pages rank by), not a count of green dots.

Humanized outputs

Tools that passed more detectors come first. Ties are broken by overall rank this cycle. Each card shows the 7 detector scores, then the tool's rewrite.

WriteHumanRank #7 this cycle
7/7 detectors passed
GPTZero
1.00passed
Winston AI
1.00passed
Originality.ai
1.00passed
ZeroGPT
1.00passed
Grammarly
1.00passed
QuillBot
0.91passed
Copyleaks
1.00passed
Median
1.00
Meaning
81.6
Readability
72.0
Words
0.89× 229 → 204
Show output (204 words)
We are giving you the opportunity to save money on your transit expenses by offering a commuting benefit. The company will provide this benefit through payroll deductions and will not reimburse you for expenses. The company will help employees save money on the following commuter benefits: 1. Public transportation 2. Bike sharing 3. Parking for bicycles The company will give you the opportunity to reduce your taxable income by allowing you to set aside income to pay for these commuting benefits. Because the company will deduct the money from your income before it is taxed, you will save 25-30% of the after tax cost of commuting. The company will limit the amount you can save per month. The company will tell you how to enroll to use this benefit. Enrollment will begin on (date) and continue for 2 weeks. If you do not enroll to use the benefit, you will not be able to use it at a later date. If you have questions about this benefit, you can contact (HR email) or attend an information session offered by the HR team this week. The company believes this benefit will help you save money on transportation and help you commuting using more sustainable methods.
UndetectedGPTRank #1 this cycle
6/7 detectors passed
GPTZero
0.92passed
Winston AI
0.97passed
Originality.ai
0.90passed
ZeroGPT
0.82passed
Grammarly
1.00passed
QuillBot
0.50passed
Copyleaks
0.00caught
Median
0.90
Meaning
96.3
Readability
72.0
Words
1.10× 229 → 252
Show output (252 words)
# New Commuter Benefit Program Announcement Dear Team, I'm delighted to be able to announce our new commuter benefit program, which takes effect today. In line with our belief that employees deserve support in their well-being and that they should not bear the full cost of commuting, we are now offering pre-tax commuter benefits. ## Covered Benefits: Through this, eligible employees can use pre-tax dollars to pay for: - public transit (subway, train, bus) - a bike share membership - bicycle parking at our buildings By using pre-tax dollars for commuting, employees can save approximately 25-30% on their commuting costs and reduce their taxable income. ## Program Structure: In the enrollment materials, you'll find a cap on monthly contributions under federal rules. Enrollment materials have gone out to your email. Through the benefits system, you can elect to participate. ## Enrollment Process: There will be two weeks of open enrollment, starting tomorrow. Please elect by [specific date]. This week, the HR team will be holding two information sessions on this program. You'll find details of these in your inbox. Or, if you have questions, you can email [HR email]. ## Questions: Whether you bike, take public transit or do both, this benefit eases the cost of commuting for employees and supports our own sustainability goals. In this way, we're investing in the well-being of our employees. ## Program Significance: Thanks for all you do for our organization. I hope many of you take advantage of this new benefit. Best regards, [Your Name]
HIX BypassRank #2 this cycle
5/7 detectors passed
GPTZero
0.00caught
Winston AI
0.98passed
Originality.ai
0.99passed
ZeroGPT
0.93passed
Grammarly
0.68passed
QuillBot
0.90passed
Copyleaks
0.00caught
Median
0.90
Meaning
93.4
Readability
42.0
Words
1.14× 229 → 261
Show output (261 words)
Dear All, Hi Team, Introducing Our New Commuter Benefit ProgramI'm excited to formally announce our commuter benefit program, which is available immediately. This is part of our continued dedication to helping support your health and to lower your out-of-pocket transportation costs. **What's Included:** We have launched the following pre-tax commuter benefits: - Mange de passes des transports en commun: d'autobus, de train, de métro - Bike-sharing memberships − Parking for bicycles at the premises **How It Works:** These commuting costs can be paid for by eligible employees through pre-tax dollars, which lowers your taxable income and provides a savings of 25-30% on transportation expenses. Federal regulations establish a monthly cap on the amount we will contribute, and that is described in the employment enrollment documents. **How to Enroll:** Check your email for details and how to sign up. You are signup through the portal benefits. It starts tomorrow and lasts for two weeks, open enrollment. Be sure to make your election by [date]. **Questions?** For those of you interested, our HR team is hosting two information sessions this week—find the details in your inbox. Also, you can reach out at [HR email] directly with any questions. **Why This Matters:** Regardless if you are commuting through public transit, bike riding (or mix of both), this benefit helps make commuting more affordable while helping to achieve our sustainability goals. We are investing in programs that will make your life better. We appreciate your ongoing commitment to our organization. We hope to see many of you utilizing this new perks! Best regards, [Your Name]
GPTinfRank #3 this cycle
5/7 detectors passed
GPTZero
0.00caught
Winston AI
0.89passed
Originality.ai
1.00passed
ZeroGPT
1.00passed
Grammarly
0.50passed
QuillBot
0.82passed
Copyleaks
0.00caught
Median
0.82
Meaning
93.7
Readability
78.0
Words
0.97× 229 → 223
Show output (223 words)
Subject: Great News! New Commuter Benefits Program! Hello Team, Great news for all of us! We are rolling out our commuter benefits program starting right now. It is one of our ways to promote your well-being and decrease your expenses. **What Is Included?** Pre-tax commuter benefits include: - Passes for public transportation (bus, train, subway) - Bike-sharing membership - Bicycle parking on our premises **How It Works?** Employees who qualify for this plan will be able to make contributions before taxes for their commuting expenses, lowering their taxable income and thus saving 25-30% of money on transportation. The monthly limit is regulated by the federal government and described in the enrollment instructions. **How to Sign Up?** The details and enrollment instructions were sent to your email address. All you need to do is enroll yourself in the benefits portal. Open enrollment starts tomorrow and lasts for two weeks. **Any Questions?** This week our HR department will hold two information meetings regarding this topic. Additional information was sent via email. Also, feel free to contact us by [HR email] if you have any questions. **Why Do We Need It?** Whichever form of commuting you prefer, now it costs you less and helps our company to achieve its sustainable development goals. We invest in programs that improve your quality of life. Best Regards, [Your Name]
StealthGPTRank #9 this cycle
4/7 detectors passed
GPTZero
0.00caught
Winston AI
0.00caught
Originality.ai
1.00passed
ZeroGPT
0.79passed
Grammarly
0.79passed
QuillBot
0.87passed
Copyleaks
0.00caught
Median
0.79
Meaning
93.3
Readability
88.0
Words
0.79× 229 → 180
Show output (180 words)
Dear All, I am pleased to inform you that our commuter benefit program has officially launched! The commuter benefit program allows you to pay for qualified commuting expenses, including bus, rail, and subway passes, bike sharing programs, and bicycle parking, with pre-tax dollars. There is a federal limit on the amount that may be contributed each month, which you’ll find detailed in the materials we’ve sent to you. Please complete your election by [date]. The open enrollment period starts tomorrow and will last for two weeks. Instructions for how to enroll in the program are included in the emails we have sent to your company-issued email addresses. We will also hold information sessions later this week. Please see the invitations sent to you for details. If you have any questions, please contact HR at [email address]. This new commuter benefit is one of several ways we are working to make your commute easier and more cost effective. Whether you're using public transit, cycling, or a combination, this makes commuting more affordable while supporting our sustainability goals. Thank you! Sincerely, [Name]
SmartHumanizerRank #4 this cycle
3/7 detectors passed
GPTZero
0.00caught
Winston AI
0.00caught
Originality.ai
0.92passed
ZeroGPT
0.54passed
Grammarly
0.37caught
QuillBot
0.55passed
Copyleaks
0.00caught
Median
0.37
Meaning
97.9
Readability
78.0
Words
1.15× 229 → 264
Show output (264 words)
### Subject: Exciting New Commuter Benefit Program Hi Team, I'm excited to announce the availability of our new commuter benefit program, effective immediately. This reflects our continued commitment to helping you maintain your well-being and reduce your out-of-pocket costs for transportation. ### What's Included: We now provide pre-tax commuter benefits for: - Public transit passes (bus, train, subway) - Bike-share memberships - Bicycle parking at our facilities. ### How It Works: Eligible employees will be able to allocate pre-tax dollars toward these commuting expenses, reducing taxable income and providing savings of approximately 25 to 30 percent on transportation costs. Our monthly limits for these benefits comply with federal regulations and will be described in the materials used for enrollment. ### How to Enroll: Information and instructions for enrollment have been mailed to you. You will complete your election by using our benefits portal and by participating in open enrollment that begins tomorrow and continues for 2 weeks. Complete your election by the specified date. ### Questions? Two sessions of information about the benefits will be conducted this week. The details of these sessions are available to you in your e-mail. You may also contact us directly with any questions. ### Why This Matters: Whether you use public transportation, bicycle or both, this benefit provides greater financial security and supports our objectives for sustainability. It also reflects our continued investment in programs that improve your quality of life. Thank you again for your continued commitment to our organization. We hope that many of you will take advantage of this new benefit. Best regards, [Your Name]
AI HumanizeRank #5 this cycle
3/7 detectors passed
GPTZero
0.00caught
Winston AI
0.60passed
Originality.ai
0.02caught
ZeroGPT
0.85passed
Grammarly
0.44caught
QuillBot
0.74passed
Copyleaks
0.00caught
Median
0.44
Meaning
93.5
Readability
72.0
Words
0.97× 229 → 223
Show output (223 words)
Subject: Launch of New Commuter Benefit Program Dear All, It is with great pleasure that I write to tell you about our new commuter benefit program, which is available to you now. We have introduced this program because we are committed to taking care of your welfare. **What the Program Includes:** Under the new program, we will be providing pre-tax commuter benefits to cover the cost of - public transportation tickets, - bike-sharing - parking for bicycles **How to Use the Benefits**: The employees eligible for this program will be able to save money on transportation costs by reducing their taxable income by setting aside pre-tax dollars for the commuting expenses. The program includes a contribution limit set by the law, as will be explained in the notice that will be sent out to you. **How to Apply to the Program:** The necessary information and instructions will be made available to you via email. You can register for the program using our benefits portal. The enrollment process will take place in the next two weeks, and you should make sure to apply before the end of the period. **Additional Information:** Our HR team is conducting two information sessions this week. **The Significance of the Program:** By using the program, you can save money on commuting. Thank you for your support. Best, [Your Name]
SuperHumanizerRank #6 this cycle
3/7 detectors passed
GPTZero
1.00passed
Winston AI
0.01caught
Originality.ai
1.00passed
ZeroGPT
0.76passed
Grammarly
0.39caught
QuillBot
0.47caught
Copyleaks
0.00caught
Median
0.47
Meaning
97.2
Readability
72.0
Words
1.10× 229 → 252
Show output (252 words)
## Subject: Exciting New Commuter Benefit Program ## Hi Team, I'm excited to introduce the debut of our new commuter benefit program today! We want to make sure your health remains a top priority, while putting more dollars back into your wallet. ## What's Included: ## We now offer pre-tax commuter benefits for: - Public transit passes (bus, train, subway) ## - Bike-sharing memberships - Parking for bicycles at our facilities ## How It Works: These are pretax deductions that are deducted from your pay for commuting expenses, earning you 25-30% savings. The monthly federal maximum for pre-tax benefits will be provided during the open enrollment packet. ## How to Enroll: Details and instructions for enrollment have been emailed to you. Please follow the link to our benefits portal to make your elections. Tomorrow is the beginning of open enrollment, which will run for two weeks. Make your selections by [date]. ## Questions? Our HR team will also hold two info sessions this week-check your inbox for the time. Or, get in touch with any questions: [HR email] ## Why This Matters: If you're taking the bus or train, riding your bike, or both, this benefit can save you money on your commute while helping us achieve our sustainability goals. We're funding initiatives that enhance your quality of life. It really means a lot to us that you are continually pouring your efforts into our company. Hopefully many of you will begin to enjoy this benefit! ## Best regards, ## [Your Name]
CleverHumanizerRank #8 this cycle
3/7 detectors passed
GPTZero
0.00caught
Winston AI
0.99passed
Originality.ai
1.00passed
ZeroGPT
0.48caught
Grammarly
0.78passed
QuillBot
0.48caught
Copyleaks
0.00caught
Median
0.48
Meaning
96.7
Readability
72.0
Words
1.41× 229 → 324
Show output (324 words)
Subject: Exciting New Commuter Benefit Program Hi Team, As you know, we've launched a new commuter benefit program this week. We are excited to be able to offer this benefit and reduce your out-of-pocket commuting expenses. The new program offers pre-tax commuter benefits for: Public transportation (bus, train, subway) Bike sharing memberships Parking for bikes in our facilities We understand that many of you currently use some form of public transportation to get to work and are hoping that this new benefit will encourage you to continue to do so. How it works: Employees who participate in the program can set aside money from their paycheck for eligible commuting expenses on a pre-tax basis. The amount of money you can set aside is limited by federal regulations and will be specified in the enrollment materials. By putting money into the account on a pre-tax basis, you'll save 25-30% on your commuting costs. How to enroll: Instructions for enrollment have been sent to your email. You can enroll in the program through the benefits portal. The open enrollment period is tomorrow and will close next week. Please make sure to complete your enrollment by [specific date]. If you have any questions about the new commuter benefit program, please feel free to contact our HR team. We've scheduled two informational sessions this week for you to learn more about the program. Details will be sent to your email. We hope that you'll take advantage of this new benefit and consider using some form of public transportation to get to work. Not only will it save you money, but it will also help reduce traffic congestion and carbon emissions. We're committed to making our company a leader in sustainability and this new program is a great step towards that goal. Thank you for your continued support of our company. We look forward to seeing many of you take advantage of this new benefit. Best regards, [Your Name]
ReHumanizeRank #10 this cycle
1/7 detectors passed
GPTZero
0.00caught
Winston AI
0.00caught
Originality.ai
0.00caught
ZeroGPT
1.00passed
Grammarly
0.35caught
QuillBot
0.49caught
Copyleaks
0.00caught
Median
0.00
Meaning
96.1
Readability
87.0
Words
1.00× 229 → 229
Show output (229 words)
Subject: New Commuter Benefit Program Hi Team, We're launching a new commuter benefit program, starting now. This is part of our effort to support you and help lower your transportation expenses. What's Covered: You can now get pre-tax commuter benefits for: - Public transit passes (like buses, trains, and subways) - Bike-sharing memberships - Parking for bikes at our buildings How it Works: Employees can set aside money before taxes for these commuting costs. This lowers your taxable income, meaning you could save around 25-30% on transportation. There's a monthly limit on contributions set by the government, which you'll find in the enrollment information. How to Sign Up: You should have received an email with all the details and how to enroll. You can sign up through our benefits portal. You have two weeks to enroll, starting tomorrow. Please make your selection by [specific date]. Need More Info? HR will hold two meetings this week to explain everything – check your email for details. You can also email us at [HR email] if you have questions. Why this is Good: This benefit will make commuting cheaper, whether you use public transit, cycle, or do both. It also helps us meet our sustainability targets. We're putting money into programs that improve your daily life. Thanks for all your hard work. We hope you'll use this new benefit. Best, [Your Name]
Undetectable AIRank #11 this cycle
0/7 detectors passed
GPTZero
0.00caught
Winston AI
0.00caught
Originality.ai
0.00caught
ZeroGPT
0.46caught
Grammarly
0.00caught
QuillBot
0.29caught
Copyleaks
0.00caught
Median
0.00
Meaning
99.0
Readability
72.0
Words
1.49× 229 → 342
Show output (342 words)
Subject: Exciting New Commuter Benefit Program Hi Team, I'm thrilled to announce the launch of our new commuter benefit program, effective immediately. This initiative reflects our commitment to supporting your well-being and reducing your out-of-pocket transportation costs. **What's Included:** We now offer pre-tax commuter benefits for: - Public transit passes (bus, train, subway) - Bike-sharing memberships - Parking for bicycles at our facilities **How It Works:** You can save money on your commute by setting aside some of your paycheck before taxes. This means you'll pay less in taxes and cut your transportation costs by about 25-30%. There's a limit on how much you can set aside each month, and you'll find the details in the enrollment info. This can be a big help with things like bus or train fares, or even parking fees. By using pre-tax dollars, you're reducing your taxable income, which can add up to some nice savings over time. **How to Enroll:** You should have received an email with all the details and instructions on how to enroll. To sign up, just head to our benefits portal - it's easy. Open enrollment starts tomorrow and will be open for two weeks, so be sure to take a look. Don't forget to make your selections by [specific date] to ensure everything is in place. **Questions?** We've got two info sessions coming up this week, so be sure to check your email for all the details. If you've got any questions, just shoot an email to [HR email] and they'll be happy to help you out. **Why This Matters:** We want to make it easier for you to get around, whether that's by bus, bike, or a mix of both. This helps you save money and it's also good for the planet. We're putting money into things that will make your life better. We appreciate your ongoing commitment to our organization and hope that many of you will utilize this new benefit, which we believe will have a positive impact on your experience with us. Best regards, [Your Name]

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