AI Humanizer Benchmark
← November 2026 prompts

Cover letter

Application essay · 291 words · prompt cover_letter

0
passed at least 6 detectors
10
failed at least one detector
10
tools tested on this prompt
Originality.ai
strictest detector here, flagged 10 of 10 rewrites

Input text

Written by Gemini 3.5 Flash for this cycle. Every tool below received this exact text.

Dear Hiring Manager and Selection Committee, I am writing to express my enthusiastic interest in the High School Chemistry Teacher position at [School Name]. With a Bachelor of Science in Chemistry, a state teaching certification, and four years of experience teaching physical science at the secondary level, I am eager to bring my passion for interactive science education to your…Show full input (291 words)
Dear Hiring Manager and Selection Committee, I am writing to express my enthusiastic interest in the High School Chemistry Teacher position at [School Name]. With a Bachelor of Science in Chemistry, a state teaching certification, and four years of experience teaching physical science at the secondary level, I am eager to bring my passion for interactive science education to your academic community. My teaching philosophy centers on making abstract chemical concepts tangible and relevant to students' everyday lives. In my previous role at [Previous School Name], I designed a student-centered curriculum that integrated hands-on laboratory experiments, digital molecular modeling software, and real-world applications. By replacing traditional lectures with inquiry-based learning labs, I increased AP Chemistry enrollment by 25% and saw an 18% improvement in standardized state test scores across my general chemistry classes. Understanding that high school can be a challenging environment, I prioritize creating an inclusive, safe, and encouraging classroom culture. I actively differentiate instruction to support diverse learning styles, ensuring that both struggling students and advanced learners are appropriately challenged. Furthermore, safety is my utmost priority; I maintain rigorous lab safety standards and train students to respect chemical handling and equipment protocol meticulously. Beyond the classroom, I am dedicated to fostering holistic student development. I previously advised the school’s Science Olympiad team, guiding them to a state-level placement, and organized an annual STEAM career fair. I am excited about the prospect of contributing to [School Name]’s robust extracurricular programs and collaborating with your talented faculty to inspire the next generation of scientists. Thank you for your time and consideration. I welcome the opportunity to discuss how my background and passion for science education align with the needs of [School Name]. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]

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.

UndetectedGPTRank #2 this cycle
4/7 detectors passed
GPTZero
0.96passed
Originality.ai
0.07caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.56passed
QuillBot
0.91passed
Grammarly
0.81passed
Median
0.56
Meaning
96.8
Readability
82.0
Words
1.04× 291 → 302
Show output (302 words)
Dear Hiring Manager and Selection Committee, I want to let you know of my interest in the High School Chemistry Teacher role at [School Name]. I have a Bachelor of Science in Chemistry, a state teaching certificate and four years of secondary-level physical science teaching. I would like to bring my passion for engaging science teaching to your academic community. In my teaching, I focus on helping students see relevance in chemistry concepts in their own lives. At my previous school, [Previous School Name], I developed a curriculum for my chemistry students that included real-world applications, use of digital molecular modeling software and hands-on lab experiments. Rather than lectures, I used inquiry-based labs. As a result, enrollment in AP Chemistry increased by 25%, and state test scores improved 18% in my general chemistry classes. Often, high school is a difficult time for students. I try to make my classroom safe, encouraging and inclusive. I try to tailor my teaching to different learning styles. I want my more advanced students appropriately challenged, and my struggling students to feel supported. Most important to me is safety in my classroom. I insist my students follow equipment and chemical procedures carefully. And they do. Outside of class, I believe it's important to help students develop as individuals. In my previous role, I coached the Science Olympiad team at my school. They placed at the state level. And each year I held a career fair focused on science, technology, engineering and math (STEAM). I'd like to add value to [School Name]'s strong extracurricular program, and work with your excellent faculty to spark a passion for science in your students. Please let me know if you'd like to talk more about my background and my approach to teaching science. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]
SuperHumanizerRank #5 this cycle
4/7 detectors passed
GPTZero
1.00passed
Originality.ai
0.08caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.81passed
QuillBot
0.60passed
Grammarly
0.67passed
Median
0.60
Meaning
96.4
Readability
88.0
Words
1.03× 291 → 300
Show output (300 words)
Dear Hiring Manager and Selection Committee, I am excited to apply for the High School Chemistry Teacher at [School Name]. I have received my Bachelor of Science in Chemistry and state certification to teach high school science (grades 9-12) and have four years of experience as a physical science teacher. For my part, I strive to teach concepts to students in a way that is manageable, concrete, and will effectively prepare them for the real world. At [Previous School Name], I created a student-centered curriculum of AP chemistry that employed laboratory investigation, 3D computer graphic representation of molecules, and application of concepts to student's everyday lives. I eliminated lectures and implemented inquiry-based laboratory instruction, which resulted in a 25% increase in AP class enrollment and an 18% increase in state testing scores in all of my general chemistry classes. I know that high school can be a stressful place and I work towards establishing an all inclusive, safe environment that motivates students to take risks and challenge themselves. I differentiate my instruction in a variety of ways so that struggling and advanced learners can all be challenged equally. Above all, I am committed to safety and uphold proper lab safety techniques. Outside the classroom, I am passionate about engaging students in holistic growth. I have previously mentored the school's Science Olympiad team, leading them to state placement, and coordinated an annual STEAM career fair. I look forward to sharing my interests and expertise by supporting [School Name]'s extracurricular programming and working with your accomplished staff. I appreciate your time and attention and hope to have the opportunity to talk with you about how my skills and enthusiasm for science education would be a perfect fit with [School Name]. Sincerely, ## [Your Name] ## [Your Phone Number] ## [Your Email Address]
CleverHumanizerRank #1 this cycle
3/7 detectors passed
GPTZero
1.00passed
Originality.ai
0.06caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.67passed
QuillBot
0.22caught
Grammarly
1.00passed
Median
0.22
Meaning
94.3
Readability
82.0
Words
1.00× 291 → 292
Show output (292 words)
Dear Hiring Manager/Hiring Committee, I am excited to apply for the High School Chemistry Teacher role at [School Name]. I have a degree in Bachelor of Science with a major in Chemistry and a teaching certificate for the state. I am passionate about bringing interactive science into the classroom and have 4 years of teaching experience in teaching Physical Science. My teaching style focuses on using practical methods to help students understand chemical concepts. At [Previous School Name], I created a student focused program which included experimenting in the laboratory, using molecular modelling software and applying concepts to real life scenarios. I helped increase the number of students taking AP Chemistry by 25% by implementing inquiry based learning labs in place of traditional lecture. This also improved standardised testing results by 18% for general chemistry classes. As teaching at high school can be challenging, I create an inclusive and encouraging environment which makes students feel safe. I differentiate my classes to suit all learning styles. I ensure all students are challenged no matter their ability. Safety is a top priority within my classes. I have strict safety protocols when running experiments in the lab and teach students to handle chemicals with care. Outside of the classroom I am passionate to help students develop as individuals. I previously mentored a Science Olympiad team and helped them achieve a state placing. I also organised a yearly STEAM careers fair. I would love to help [School Name] with their strong extra curricular programs and work with the amazing staff to inspire future scientists. Thank you for your time. I would love to discuss how my experience and passion for science teaching fits with [School Name]. Kind regards [Your Name] [Your Phone Number] [Your Email Address]
GPTinfRank #4 this cycle
3/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.03caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
1.00passed
QuillBot
0.86passed
Grammarly
1.00passed
Median
0.03
Meaning
93.8
Readability
72.0
Words
1.02× 291 → 297
Show output (297 words)
To Whom It May Concern, I am very interested in the position of High School Chemistry Teacher at [School Name]. As a result of having a Bachelor of Science in Chemistry, being certified to teach in [State Name], and gaining four years of experience in teaching physical science at the secondary level, I am ready to bring my dedication to interactive science education into your academic community. The focus of my teaching philosophy lies in providing the students with practical, real-life application of chemical concepts. At [Previous School Name], I implemented a student-driven program that incorporated laboratory experiments, digital molecular modeling software and practical applications in it. By switching from lectures to laboratories where my AP Chemistry class learned through inquiry-based projects, I increased their enrollment in the AP Chemistry class by 25%, as well as improved the performance on the standardized state tests for my general chemistry classes by 18%. In order to accommodate my diverse students in a rather complicated environment of high schools, I pay special attention to creating a safe and encouraging atmosphere for learning. My teaching strategy involves differentiation in order to accommodate the varying skills of my students. The most important thing for me is safety; therefore, I set strict standards in my laboratories and make sure that my students strictly follow all rules concerning chemical substances and equipment. Besides my work within the classroom, I aim to create an overall development of my students, which includes participation in various extracurricular activities. Previously, I was an advisor for the Science Olympiad team, which reached the state level in their competitions and coordinated an annual STEAM career fair in the school. I am happy to have a chance to contribute to your extracurricular programs in [School Name]. Sincerely, [Your Name] [Your Phone
HIX BypassRank #7 this cycle
3/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.04caught
Copyleaks
1.00passed
Pangram
0.00caught
ZeroGPT
1.00passed
QuillBot
0.14caught
Grammarly
0.72passed
Median
0.14
Meaning
96.3
Readability
82.0
Words
1.38× 291 → 401
Show output (401 words)
Dear Hiring Manager and Selection Committee, I would like to state how excited I am about applying for the high school chemistry teacher job opening that is available through [School Name]. Because I have a BS degree in Chemistry, a valid state teaching certificate, and have been teaching secondary-level physical science for four years, I would love to be able to share with your students my enthusiasm for using interactive methods to teach science. My educational philosophy is centered around providing students with a way to experience and understand abstract chemical principles as they apply to their daily lives. While working in my prior position at [Previous School Name], I created a student-centered curriculum which included laboratory experiences, molecular modeling programs (using technology), and real-world examples of how chemicals are used in society. After changing from lecturing as the primary method of instruction to using inquiry-based laboratory experiences as the primary method of instruction, I was able to increase the number of students enrolled in AP Chemistry by 25%. Additionally, I experienced an increase of 18% in the average score of my general chemistry students on standardized state tests. Understanding the difficulties many students face in high school, I work hard to establish a classroom community that is inclusive, safe, and positive. I use differentiated instruction so that all types of learners can find success. This means that both struggling students and advanced students will receive the right amount of challenge for their level. In addition to creating a supportive atmosphere for learning, safety is very important to me. I create and enforce strict lab safety regulations, and I teach students how to follow procedures regarding chemicals and equipment with great care. I'm also passionate about providing students with opportunities outside the classroom. As part of my past experience, I served as advisor for the Science Olympiad team at the school where I worked, helping them achieve a state level ranking. In addition to advising the team, I also organized an annual STEAM career fair. I look forward to contributing to [School Name]'s extensive after-school program, working with your great staff, and inspiring the future generations of scientists. Thank you so much for your interest and the chance to show you what makes me uniquely qualified to meet the needs of [School Name] based on my experience and passion for teaching science. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]
RephrasyRank #3 this cycle
1/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.09caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.47caught
QuillBot
0.00caught
Grammarly
0.74passed
Median
0.00
Meaning
96.4
Readability
72.0
Words
1.10× 291 → 320
Show output (320 words)
Dear Hiring Manager and Selection Committee: I am excited to apply for the position of High School Chemistry Teacher at [School Name] my . Bachelor of Science degree in Chemistry and my state teaching certification, in addition to and four years of teaching physical science at the secondary level, make me a perfect fit for the position. I believe that helping students to understand chemistry concepts involves making those concepts relevant to their everyday lives. At [Previous School Name], I developed a student-centered curriculum that made use of hands-on laboratory exercises and digital molecular modeling software to create a relevant and engaging learning experience. I replaced the standard lectures and inquiry-based learning labs that had previously characterized the classes with more interactive assignments. This innovation resulted in a 25 percent increase in AP Chemistry enrollment and an 18 percent increase in the scores my students received on the standardized state test in general chemistry. I know that high school can be a competitive and challenging environment. When I engage with students in my classroom, I emphasize inclusion and safety first. I create a classroom culture that is encouraging and supportive of all types of students by providing differentiated instructional opportunities that engage students regardless of their existing academic skills. I also model and requite safety standards, ensuring that every student has the respect to learn chemistry in the correct way and without fear of needless risk. Beyond the classroom, I foster holistic student development as a coach and mentor. As adviser to the school’s Science Olympiad team, I helped them achieve a state-level placement and organized an annual STEAM career fair. I look forward to contributing to [School Name]’s robust extracurricular programs and collaborating with your talented faculty. Thank you for your time and consideration. I welcome the opportunity to discuss how my background can meet the needs of [School Name]. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]
SmartHumanizerRank #6 this cycle
1/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.04caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.60passed
QuillBot
0.28caught
Grammarly
0.23caught
Median
0.04
Meaning
96.4
Readability
78.0
Words
1.07× 291 → 312
Show output (312 words)
Dear Hiring Manager and Selection Committee, I am excited about the opportunity for the high school chemistry teaching position at [School Name]. With a bachelor's degree in chemistry, state teaching certification and four years of experience teaching physical science at the secondary level, I would be eager to share my enthusiasm for interactive science instruction with your school community. My teaching philosophy focuses on making abstract chemical concepts concrete and relevant to everyday life. In my previous position at [Previous School Name], I developed a student-centered program that incorporated hands-on laboratory experiences, computer-based molecular modeling and real-world applications. Replacement of traditional lectures with inquiry-based laboratory experiences resulted in a 25% increase in AP chemistry enrollments and an 18% improvement in scores on standardized state examinations for my general chemistry courses. Recognizing the challenges of high school education, I provide a supportive, inclusive and stimulating environment for learning. My instructional strategies accommodate a variety of learning styles and provide appropriate levels of challenge for both struggling and highly motivated students. On top of that, I maintain a high degree of laboratory safety and train students to follow procedures for the use of chemical materials and laboratory equipment with complete attention to detail. In addition to my teaching experience, I am committed to the overall development of students. Previously, I directed the school's science olympiad program to achieve a state ranking and coordinated an annual program for career experiences in science and technology. I am eager to contribute to the strong programs of extracurricular activities available at [School Name], and to work with your excellent faculty to inspire future generations of scientists. Thank you for your consideration of my qualifications. I would be pleased to discuss the extent to which my experience and enthusiasm for science education are appropriate to the needs of [School Name]. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]
StealthGPTRank #8 this cycle
0/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.05caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.45caught
QuillBot
0.00caught
Grammarly
0.32caught
Median
0.00
Meaning
93.0
Readability
82.0
Words
1.05× 291 → 307
Show output (307 words)
Dear Hiring Committee, Please accept this letter as an application for the high school chemistry teacher position at [School Name]. As a certified teacher with a BS in Chemistry and four years of experience in secondary-level physical science instruction, I would love to have the opportunity to join your staff. My goal as a teacher is to help students understand chemistry concepts in ways that connect with their daily experiences. While teaching at [Previous School Name], I designed a class plan which featured interactive labs, online molecular modeling programs, and projects that demonstrated how chemistry is used in the real world. The number of students enrolled in AP Chemistry increased by 25% under my guidance, and student performance on the state exam improved by 18% for those who were in my chemistry courses. I understand the challenges that come with being a teenager, so I work hard to create a classroom environment that is supportive and positive. I try to adapt my methods so they meet the needs of all students, making sure to offer extra assistance when needed without being too easy on the students who are doing well. I also know that safety must be a top concern in any chemistry program, so I make sure to review procedures and lab safety guidelines regularly. Outside of the classroom, I helped coach the Science Olympiad team at my previous school, and was involved in organizing the annual STEAM career fair. I am very interested in helping [School Name] grow their extracurricular activities, and am excited about the possibility of working with the teachers at [School Name] to provide the best possible educational experience for students. Thank you for your time and consideration. I look forward to speaking with you about the chemistry teacher opening at [School Name]. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]
ReHumanizeRank #9 this cycle
0/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.04caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.03caught
QuillBot
0.00caught
Grammarly
0.00caught
Median
0.00
Meaning
97.2
Readability
78.0
Words
1.00× 291 → 292
Show output (292 words)
Dear Hiring Manager and Selection Committee, I'm writing to express my strong interest in the High School Chemistry Teacher job at [School Name]. I have a Bachelor of Science in Chemistry, a state teaching certification, and four years of experience teaching physical science to high schoolers. I'm excited to share my enthusiasm for hands-on science education with your school. My approach to teaching is to make chemistry concepts real and relatable for students. At my previous school, [Previous School Name], I created a curriculum focused on students learning by doing. This included lab work, using software for molecular modeling, and showing how chemistry applies to real life. Instead of just lectures, I used inquiry-based labs. This led to a 25% increase in AP Chemistry enrollment and an 18% improvement in state test scores for my general chemistry classes. I know high school can be tough, so I focus on creating a classroom that's welcoming, safe, and supportive. I adjust my teaching to fit different learning styles, making sure students who are struggling and those who are ahead are both challenged. Safety in the lab is also very important to me. I strictly follow safety rules and teach students how to handle chemicals and equipment properly. Outside of class, I'm committed to helping students grow in all areas. I coached the Science Olympiad team, helping them reach the state level, and I organized a yearly STEAM career fair. I'm eager to get involved in [School Name]'s extracurricular activities and work with your teachers to inspire young scientists. Thank you for considering my application. I look forward to talking with you about how my experience and passion for teaching science fit what [School Name] needs. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]
Undetectable AIRank #10 this cycle
0/7 detectors passed
GPTZero
0.00caught
Originality.ai
0.04caught
Copyleaks
0.00caught
Pangram
0.00caught
ZeroGPT
0.28caught
QuillBot
0.00caught
Grammarly
0.22caught
Median
0.00
Meaning
94.9
Readability
72.0
Words
1.89× 291 → 549
Show output (549 words)
Dear Hiring Manager and Selection Committee, I'm excited to apply for the High School Chemistry Teacher job at [School Name]. I have a degree in Chemistry and a teaching certificate, and I've been teaching physical science to high school students for four years. I love making science fun and interactive, and I'm looking forward to sharing that with your students. My experience has taught me how to make complex concepts easy to understand, and I'm confident that I can make a real difference in your school. I'm passionate about helping students discover the wonders of chemistry and showing them how it applies to their everyday lives. I'm excited about the opportunity to join your team and contribute to the academic community at [School Name]. I believe that teaching chemistry should be about making complex ideas easy to understand and relatable to our daily lives. When I taught at my old school, I created a curriculum that focused on the students and included hands-on lab experiments, computer software to model molecules, and examples from real life. Instead of giving traditional lectures, I had students work on projects and investigations in the lab. This approach really worked - more students started taking AP Chemistry, with a 25% increase, and scores on the state tests improved by 18% in my regular chemistry classes. By doing things this way, I saw my students become more engaged and interested in learning chemistry. I believe that high school can be tough, so I try to make my classroom a place where everyone feels welcome and supported. I want all my students to feel safe and encouraged to learn. To do this, I teach in different ways to help students who learn differently. This means that students who are struggling get the help they need, and students who are advanced get challenged to learn more. Safety is really important to me, so I make sure my students know how to handle chemicals and equipment carefully. I teach them how to follow the rules and be careful in the lab, and I always make sure they know what to do in case of an emergency. By doing this, I hope to create a positive and supportive learning environment where all my students can succeed. I'm passionate about helping students grow outside of the classroom too. I used to lead our school's Science Olympiad team and we even made it to the state level. I also put together a big STEAM career fair every year. Now, I'm looking forward to being a part of [School Name]'s amazing extracurricular activities and working with the great teachers there to inspire the next group of scientists and thinkers. I think it's so important to show students how science and learning can be fun and exciting, and to help them develop skills that will serve them well in all areas of life. I'm excited about the chance to talk to you more about how my experience and love for teaching science could be a good fit for [School Name]. I think my background and passion for science education could really make a difference here. I'm looking forward to sharing my ideas with you and learning more about what [School Name] is looking for. Sincerely, [Your Name] [Your Phone Number] [Your Email Address]

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