AI Humanizer Benchmark
Ranked #3 best AI humanizer· Nov 2026

Rephrasy

AI humanizer · rephrasy.ai

In the November 2026 cycle, Rephrasy placed #3 of 10 with an overall score of 72.97/100. AI Humanizer Benchmark tests Rephrasy independently. The overall score weights bypass rate at 42%, meaning preservation at 32%, readability at 16% and consistency across categories at 10%, then subtracts any penalties.

72.97/100
overall score
80.0%
bypass rate
33/33
tests completed
1.04×
avg. length vs. input
Last tested
Sample size
33
Methodology
v1.2.0

Detector bypass rates

Average human-likelihood each detector gave this tool's outputs, shown as a percentage.

Copyleaks
87.9
Grammarly
86.5
QuillBot
83.9
GPTZero
82.6
ZeroGPT
75.5
Originality.ai
28.1
Pangram
17.2

Performance by category

The overall-score formula applied within each category, before penalties.

Academic essayApplication essayBlog postBusiness emailMarketing copyDiscussion boardNews article

Output quality

Meaning preservation is the rescaled embedding cosine similarity between input and output. Readability is a language model's rating of clarity, fluency and naturalness. Consistency shows how evenly bypass results hold across writing categories. The published data lists each value for every test.

Meaning
69.6/100
#8 of 10 · field avg 73.5
Readability
75.3/100
#10 of 10 · field avg 79.8
Consistency
80.7/100
#5 of 10 · field avg 82.4

Penalties

  • Meaning drift × 1−1.0
  • Length inflation × 2−2.0
  • Total−3.0 pts
Meaning drift · 1 testShow tests

The meaning similarity between input and output fell below 0.85. The rewrite no longer says what the input said.

  • News article News article
    Similarity 0.805 < 0.85
    Show input and output
    Input · 300 words
    # Community Libraries Evolve as Digital Hubs in the Modern Age Community libraries are reinventing themselves as essential digital access points, bridging the technology gap for millions of underserved residents. As remote work, online education, and digital services become increasingly prevalent, public libraries have expanded far beyond their traditional roles. Today, these institutions offer free high-speed internet, computer access, and digital literacy programs that prove vital for economically disadvantaged populations. "Libraries are democratizing access to technology," says Maria Chen, director of the American Library Association's digital initiatives. "For many people, the library is their only gateway to reliable internet and computers." The shift has proven particularly significant during the pandemic, when libraries served as critical resources for students attending online classes and jobseekers navigating remote employment applications. Many branches now offer specialized programs including coding workshops, digital citizenship training, and assistance with government websites and telehealth services. Beyond hardware and internet access, librarians have become digital coaches. Staff members help patrons navigate everything from email basics to cybersecurity awareness, recognizing that technological access alone doesn't guarantee digital competence. However, this expanded mission strains already-limited budgets. Libraries struggle to maintain cutting-edge equipment, hire specialized staff, and keep pace with rapidly evolving technology—all while facing potential funding cuts. Despite these challenges, community libraries remain indispensable. They provide affordable alternatives to commercial internet providers and computer labs, offer judgment-free learning environments, and maintain their role as community anchors. Looking forward, experts emphasize that libraries must continue adapting. Strategic partnerships with tech companies, increased government funding, and integration of emerging technologies like virtual reality and artificial intelligence could enhance their offerings. As the digital divide persists, community libraries stand at the frontline, ensuring that everyone—regardless of income or background—has equitable access to the tools and knowledge necessary to thrive in an increasingly digital world.
    Output · 337 words
    Stateline, by Michael Macagnone : After years of communities across the country debating whether to close local libraries or reduce their staff and budgets, a larger conversation is starting to bubble up: how municipalities will support their libraries in a digital age. In response to massive shifts in how information is consumed, many libraries are striving to develop new material, programs and technology dedicated specifically to online access. This includes digitizing old collection material to make it available to patrons thousands of miles away to building computer labs to provide public access for those in need. Some libraries, like those in Chicago and New York City, even allow patrons to take classes in virtual reality. "At its core, that's what libraries are for: providing equal access to information and technology available to everyone, regardless of who they are or where they come from," said Maria Chen with the American Library Association's digital initiatives. "The internet has become so fundamental to so many services today, but not everyone has access at home. That's something libraries are still trying to solve." Affordability, particularly for economically disadvantaged populations, as well as the ability to make using technology comfortable, are two areas where libraries can continue to play a large role, Chen said. The expanded mission has added further strain to already-limited budgets. Many libraries are cutting back on programs in order to maintain the latest equipment or hire specialized staff. Even less are able to find ways to fund pay-walls and subscriptions to specialized services, especially as their funding is often targeted for potential cuts. Still, it’s hard to argue against the case that community libraries are more indispensable than ever: Often serving as the last affordable alternative for many communities as major corporations eliminate commercial internet providers, serve as community computer labs or act as a judgment-free zone for learning. Libraries are also vital community anchors. Some experts recommend libraries forge strategic partnerships with tech companies or actively seek increased government funding. Some endorse the incorporation of new technologies.
    Detector scores for this run
Length inflation · 2 testsShow tests

The output was more than 1.4× the input's word count. Extra words were added instead of the text being rewritten.

  • How-to blog Blog post
    280 → 411 words · 1.47× > 1.4×
    Show input and output
    Input · 280 words
    # Repaint Your Kitchen in a Weekend ## Preparation (Friday Evening) Clear your kitchen completely. Remove cabinet hardware, light fixtures, and appliances if possible. Cover countertops, floors, and remaining fixtures with drop cloths and plastic sheeting. This protects your space and prevents cleanup delays. ## Priming and Cleaning (Saturday Morning) Clean all surfaces thoroughly with TSP (trisodium phosphate) to remove grease and grime. Allow to dry completely. Apply primer to any stained areas or previously dark walls. Sand glossy surfaces lightly to help paint adhere. This foundational work ensures professional results. ## First Paint Coat (Saturday Afternoon) Begin with ceiling and upper walls using a roller for efficiency. Paint trim and detailed areas with a brush. Use quality paint—it covers better and lasts longer. Allow proper drying time between coats, typically 4-6 hours depending on humidity. ## Second Coat and Details (Sunday) Apply your second coat to walls and ceiling. Paint doors and trim if desired. Use painter's tape for clean lines around windows and baseboards. Remove tape while paint is slightly tacky for crisp edges. ## Final Touches (Sunday Evening to Monday) Reinstall light fixtures and cabinet hardware once paint is completely dry. Return appliances to their locations. Remove protective coverings carefully to avoid dragging dust onto fresh paint. ## Pro Tips - Purchase supplies Thursday to avoid weekend shopping delays - Use low-VOC paint for better air quality - Invest in quality brushes and rollers—they make a visible difference - Keep a damp cloth handy for quick cleanup - Ensure proper ventilation throughout the process With careful planning and efficient execution, your kitchen will transform into a freshly painted space by Monday morning, ready for the week ahead.
    Output · 411 words
    Repaint Your Kitchen in a Weekend Preparation (Friday Evening) You'll have an easier time painting if you have an uncluttered work area. So, when you start your project on Friday evening, clear your kitchen completely. Remove hardware from the cabinets, light fixtures, and, if possible, appliances. Then, cover the countertops, floors, and any fixtures you couldn't remove with drop cloths and plastic sheeting to avoid any delay when it comes time to clean up. Priming and Cleaning (Saturday Morning) Clean, clean, clean! If you want to get professional results, you need to get old grease and grime off the surfaces to be painted. Use trisodium phosphate (sold as TSP) to clean everything, and be sure to let the surfaces dry completely. If there are stained areas, apply primer before you start painting. If the walls were previously dark, you'll need to apply primer to the whole surface, but that's not usually necessary. If the surfces are old and glossy, give them a light sanding before you start painting. First Paint Coat (Saturday Afternoon) The ceiling and upper parts of the walls can be painted with a roller; do trim work with a brush. Make sure to use good-quality paint; it will cover much better than cheap stuff, and it will end up saving you time and money. Make sure to allow the paint to completely dry (4 to 6 hours, depending on temperature and humidity) before applying a second coat. Second Coat and Details (Sunday) If you're going to apply a second coat to the door or trim, that's the next step. If you want to paint the doors, now's a good time to get those out of the way, too. When the walls have completely dried, tape around windows and baseboards, then apply a coat of paint to these areas. Remove the tape when the paint feels slightly tacky. Final Touches (Sunday Evening to Monday) Once you have a 2nd coat and it’s all completely dry, reinstall the light fixtures and cabinet hardware and return the appliances to their locations. Remove all the protective coverings, taking care not to drag any dust with you. Pro Tips Buy your supplies on Thursday to avoid weekend shopping delays. Use low-VOC paint for better air quality. Invest in good brushes and rollers, it makes a visible difference. Have a damp cloth handy, it helps with quick clean-ups. Keep the area well-ventilated. By Monday morning, your kitchen will be ready for the week ahead.
    Detector scores for this run
  • How-to blog Blog post
    313 → 496 words · 1.58× > 1.4×
    Show input and output
    Input · 313 words
    Starting a neighborhood book club is a simple way to meet people, discover new authors, and create a regular gathering that neighbors look forward to. Begin by inviting a small group through neighborhood email lists, social media, flyers, or word of mouth. Aim for six to twelve members so discussions feel lively without becoming difficult to manage. At the first meeting, agree on basic details: how often to meet, where to gather, how books will be selected, and whether everyone is expected to finish the book. Choose a consistent schedule, such as the first Thursday of every month. Rotating homes can make hosting manageable, or you can meet at a library, café, community center, or park. Consider offering a virtual option occasionally for members who cannot attend in person. For book selection, take turns choosing titles or let members nominate books and vote. Set a page limit when necessary, and vary the genres, authors, and perspectives. Include popular fiction, nonfiction, memoirs, mysteries, local authors, and shorter works. Announce the next title and meeting date before everyone leaves. To encourage meaningful conversation, prepare a few open-ended questions. Ask what members enjoyed, disliked, or found surprising; which characters or ideas felt most convincing; and how the book connects to current life or local experiences. A rotating discussion leader can help share responsibility. Keep the club welcoming and flexible. Make room for different opinions, avoid letting one person dominate, and remember that members may occasionally miss a meeting or finish only part of the book. Snacks and drinks can add warmth, but keep hosting expectations simple. Finally, maintain momentum by communicating reminders, celebrating milestones, and occasionally trying something different, such as a themed potluck, author talk, bookstore visit, or book exchange. A successful club does not require perfect attendance or profound analysis—it needs consistency, friendliness, and books that give people a reason to keep coming back.
    Output · 496 words
    Starting a neighborhood book club is an easy way to meet people, discover new authors, and get together regularly with neighbors. Begin by sending a few email invitations on your neighborhood email list, posting to social media, putting up flyers or just spreading the word. Ideally, you want a group of about six to twelve members that can discuss a book and keep to a manageable size. At the first meeting, agree on how often to meet, where to meet, how the group will choose books and whether everyone is expected to finish the book each time. You might decide to meet the first Thursday of every month, for example, and rotate hosting at members’ homes or meet at the library or a local cafe. If you have members who can't attend in person, you might offer a virtual option. Decide how the group will select a book. You could all take turns, or have people nominate books and then vote. If your group is ambitious, set a page limit; mix up the genres, authors and perspectives you’re reading. You might throw a popular fiction in with some nonfiction or a memoir or mystery, read a few works by local authors or select shorter works. Announce the next book and when you’ll get together before everyone goes home. Set the stage for meaningful conversation by preparing some open-ended questions to start with and encouraging members to share their own questions. You may want to ask members what they enjoyed or disliked about the book, or what was surprising. You may want to ask which character or idea they found most convincing, or how they related to some aspect of the book in their current life or local area. If you'd like to share the responsibility, you can also rotate the discussion leader from meeting to meeting. To keep the discussion interesting and welcoming, keep in mind that: Everyone is entitled to their opinion and all opinions are valid. If someone else disagrees with an opinion, it's acceptable to discuss it, but don't let it take over the meeting! It is also important to remember that it is acceptable to miss a meeting or not finish the book! Lastly you'll want to provide snacks and drinks if you can, and letting club members know who is hosting each meeting is a good idea! If you aren't going to be there, it's best to let someone else know it is their turn! You might also want to keep things going with reminders and make a special occasion of milestones -- check in on meeting yourself, or start a new year with a themed potluck, or decrease attendance by bringing to members who only attend occasionally what they can do to keep their club going -- answers may include rights, conveniencing, hosting, etc. Entrance could be a reminder to read, decorate their space, or get members more involved in the process by hosting meetings themselves or providing good snacks.
    Detector scores for this run

These points come off the overall score. How penalties work

Evidence: every Rephrasy run

Each row is one November 2026 prompt that Rephrasy rewrote, with a dot for each of the 7 detectors. Green means the detector judged the rewrite human. Red means it scored the rewrite as AI. An empty circle means no score came back.

Download all 33 rows (.jsonl)

2 of 33 outputs passed all 7 detectors. The other 31 got an AI verdict from at least one detector or are missing a score.

#PromptInput modelGPTZeroOriginality.aiCopyleaksPangramZeroGPTQuillBotGrammarlyMedian
01Argumentative essayAcademic essayGPT-5.6 Terra0.86
02Lit reviewAcademic essayClaude Sonnet 51.00
03Cover letterApplication essayGemini 3.5 Flash0.00
04Personal statementApplication essayGPT-5.6 Luna1.00
05How-to blogBlog postClaude Haiku 4.50.86
06Listicle blogBlog postGemini 2.5 Flash1.00
07Business emailBusiness emailGPT-5.6 Terra0.08
08Landing copyMarketing copyClaude Sonnet 51.00
09Product descriptionMarketing copyGemini 3.5 Flash1.00
10Discussion postDiscussion boardGPT-5.6 Luna0.78
11News articleNews articleClaude Haiku 4.51.00
12Argumentative essayAcademic essayGemini 2.5 Flash0.62
13Lit reviewAcademic essayGPT-5.6 Terra0.95
14Cover letterApplication essayClaude Sonnet 50.35
15Personal statementApplication essayGemini 3.5 Flash0.07
16How-to blogBlog postGPT-5.6 Luna0.89
17Listicle blogBlog postClaude Haiku 4.50.86
18Business emailBusiness emailGemini 2.5 Flash0.99
19Landing copyMarketing copyGPT-5.6 Terra1.00
20Product descriptionMarketing copyClaude Sonnet 51.00
21Discussion postDiscussion boardGemini 3.5 Flash1.00
22News articleNews articleGPT-5.6 Luna1.00
23Argumentative essayAcademic essayClaude Haiku 4.51.00
24Lit reviewAcademic essayGemini 2.5 Flash1.00
25Cover letterApplication essayGPT-5.6 Terra0.65
26Personal statementApplication essayClaude Sonnet 50.61
27How-to blogBlog postGemini 3.5 Flash0.62
28Listicle blogBlog postGPT-5.6 Luna0.86
29Business emailBusiness emailClaude Haiku 4.50.64
30Landing copyMarketing copyGemini 2.5 Flash0.86
31Product descriptionMarketing copyGPT-5.6 Terra0.99
32Discussion postDiscussion boardClaude Sonnet 50.97
33News articleNews articleGemini 3.5 Flash0.88
Detector rate (mean human-likelihood)82.628.187.917.2hardest75.583.986.5
Runs passed28/338/3329/336/3329/3330/3331/33

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.

Access

Free tier
No
Public API
Yes (required for inclusion)

How we tested

The tool rewrote 33 texts from 7 writing categories on its default settings. Then 7 independent AI detectors scored each output. Anyone can recompute every score from the published data.

Raw test data

Every input text from the November 2026 cycle, with this tool's rewrite, the settings used and each detector's score.

Rephrasy
33 rows · .jsonl

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