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October 2026 results: WriteHuman holds #1, StealthGPT jumps to #2. Read the analysis →
HumanizerBench

AI Humanize io

AI Humanize io ranked #6 of 14 in the October 2026 cycle with an overall score of 68.24/100. Originality.ai passed its output most often (90.2%), and Pangram passed none of it. It did best on academic essays and worst on news articles.

AI Humanize io is a standalone AI humanizer with writing styles such as academic, blog, formal and informal. It can lock keywords and citations so they stay unchanged, and paid plans add an Autopilot mode that rewrites a passage several times. An introductory signup allowance is available.

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Overall score
68.24/100
Detector bypass
66.5%
Overall rank
#6of 14
Prompts tested
30
See every test → How we score Fairness policy

Detector Bypass Rates

Each detector's average human-likelihood score on this tool's outputs, where 100 means every output was scored as human.

Performance by Category

Category score across writing contexts: bypass credit only for real rewrites, blended with each category's meaning and readability. How it's computed

Academic Essay: 70.2Application Essay: 63.0Blog Post: 67.5Marketing Copy: 63.8Discussion Board: 65.7News Article: 60.4AcademicEssay70.2ApplicationEssay63.0BlogPost67.5MarketingCopy63.8DiscussionBoard65.7NewsArticle60.4

Strengths

  • Originality.ai classified 90.2% of its runs as human-written
  • No scoring penalties this cycle

Weaknesses

  • Bypass rate of 66.5%, below the field median of 71.3%
  • Pangram classified none of its runs as human-written
  • Down 2 places from the previous cycle

From the October 2026 cycle, compared with the other 13 tools ranked in that cycle.

Evidence: every run

Every prompt AI Humanize io was run on in October 2026, and how each of the 6 detectors scored the output. Green: the detector called it human-written. Red: it was caught.

0 of 30 outputs passed all 6 detectors; 30 were caught by at least one.

Prompt GPT Pan Win Zero Copy Orig Mean Recording
Landing Copy · gemini-3-8-flash passed caught passed passed caught caught 0.45
Product Desc · gemini-3-8-flash passed caught caught passed passed passed 0.72
Landing Copy · gpt-6-sol passed caught passed passed passed passed 0.78
Discussion Post · gpt-6-sol passed caught passed passed passed passed 0.78
Product Desc · gpt-6-sol caught caught caught caught passed passed 0.51
Lit Review · claude-sonnet-5-5 passed caught passed passed passed passed 0.83
Lit Review · gpt-6-sol passed caught passed passed passed passed 0.81
Cover Letter · gpt-6-sol caught caught passed caught caught passed 0.35
Howto Blog · gemini-3-8-flash passed caught passed caught caught passed 0.54
Lit Review · gemini-3-8-flash passed caught passed passed passed passed 0.80
Landing Copy · claude-sonnet-5-5 passed caught passed passed passed passed 0.75
Personal Statement · gemini-3-8-flash passed caught passed passed passed passed 0.77
Argumentative Essay · gpt-6-sol passed caught passed passed passed passed 0.66
Listicle Blog · gemini-3-8-flash passed caught caught passed caught caught 0.29
Personal Statement · claude-sonnet-5-5 passed caught passed passed passed passed 0.83
Howto Blog · gpt-6-sol passed caught passed passed passed passed 0.76
Product Desc · claude-sonnet-5-5 passed caught passed passed passed passed 0.78
Listicle Blog · claude-sonnet-5-5 passed caught passed caught passed passed 0.67
Argumentative Essay · claude-sonnet-5-5 passed caught passed passed passed passed 0.74
News Article · gpt-6-sol caught caught passed passed caught passed 0.48
Howto Blog · claude-sonnet-5-5 passed caught passed caught passed passed 0.73
News Article · claude-sonnet-5-5 passed caught passed passed passed passed 0.82
Discussion Post · gemini-3-8-flash passed caught passed passed passed passed 0.77
Discussion Post · claude-sonnet-5-5 caught caught passed passed passed passed 0.64
Cover Letter · gemini-3-8-flash caught caught passed passed passed passed 0.63
Listicle Blog · gpt-6-sol passed caught passed passed passed passed 0.69
Cover Letter · claude-sonnet-5-5 caught caught passed passed caught passed 0.47
Personal Statement · gpt-6-sol caught caught passed caught passed passed 0.56
News Article · gemini-3-8-flash caught caught passed passed caught passed 0.50
Argumentative Essay · gemini-3-8-flash passed caught passed passed passed passed 0.83
Detector rate 70.0 0.0 hardest 89.9 75.4 73.6 90.2
Runs passed 22/30 0/30 27/30 24/30 23/30 28/30

A dot is green when the detector's human-likelihood score for that run was 0.50 or higher. The detector rate is the mean of that detector's scores across the runs, the same number the detector pages rank by; it is not the count of green dots, which the Runs passed row shows. Hover a dot for the score.

How to read these scores

Each detector returns a human-likelihood on a common 0 to 1 scale, where 1 means it judged the text human-written and 0 means it flagged it as AI. On these pages a verdict counts as passed when that score is at least 0.50, the midpoint of the detector's own scale. That threshold exists only to draw the chips: the bypass rate on the leaderboard is the mean of each test's scores from the 6 detectors, a continuous number, so a tool's pass count and its bypass rate will not be the same figure.

Read all 30 AI Humanize io outputs → Compare every tool on a prompt →

Session recording

History

Overall score compared with other ranked tools.

Latest score68.24/100
Score / 100 Shown range: 25–100
25 50 75 100 June 2026. Other 12 tools: median 71.28, middle 50% 66.62–81.09. July 2026. Other 12 tools: median 63.84, middle 50% 59.63–68.67. August 2026. Other 11 tools: median 63.30, middle 50% 58.34–68.88. September 2026. Other 13 tools: median 67.58, middle 50% 60.97–72.80. October 2026. Other 13 tools: median 65.98, middle 50% 62.75–69.02. June 2026: 72.95/100 · #6. Other 12 tools: median 71.28, middle 50% 66.62–81.09. June 2026 July 2026: 59.66/100 · #10. Other 12 tools: median 63.84, middle 50% 59.63–68.67. July 2026 August 2026: 64.57/100 · #6. Other 11 tools: median 63.30, middle 50% 58.34–68.88. August 2026 September 2026: 72.94/100 · #4. Other 13 tools: median 67.58, middle 50% 60.97–72.80. September 2026 October 2026: 68.24/100 · #6. Other 13 tools: median 65.98, middle 50% 62.75–69.02. October 2026 25 50 75 100 June 2026. Other 12 tools: median 71.28, middle 50% 66.62–81.09. July 2026. Other 12 tools: median 63.84, middle 50% 59.63–68.67. August 2026. Other 11 tools: median 63.30, middle 50% 58.34–68.88. September 2026. Other 13 tools: median 67.58, middle 50% 60.97–72.80. October 2026. Other 13 tools: median 65.98, middle 50% 62.75–69.02. June 2026: 72.95/100 · #6. Other 12 tools: median 71.28, middle 50% 66.62–81.09. June 2026 July 2026: 59.66/100 · #10. Other 12 tools: median 63.84, middle 50% 59.63–68.67. August 2026: 64.57/100 · #6. Other 11 tools: median 63.30, middle 50% 58.34–68.88. August 2026 September 2026: 72.94/100 · #4. Other 13 tools: median 67.58, middle 50% 60.97–72.80. October 2026: 68.24/100 · #6. Other 13 tools: median 65.98, middle 50% 62.75–69.02. October 2026
AI Humanize io Others’ median Others’ middle 50%

2.3 points above the median of 13 other tools in October 2026.

The shaded band is the 25th–75th percentile of other tools in each cycle. Scores are out of 100; higher is better.

Monthly pricing

Standard USD rates, billed month to month. Annual discounts and promotions excluded.

  • Basic

    $15.00/mo

    20,000 input words per month.

    • Up to 1,000 input words per request.

  • Pro

    $25.00/mo

    60,000 input words per month.

    • No per-request word cap advertised.

  • Unlimited

    $40.00/mo

    Unlimited input words advertised.

    • No numerical fair-use limit published in the checked pricing.

Free access and trials

A 2,000-word introductory signup allowance is offered. Its renewal period is not confirmed.

  • Manual and automatic rewrites count the input words once, even when automatic mode rewrites several times.

Sample output

One AI-written passage from the October 2026 cycle and what AI Humanize io returned for it. This prompt was picked by a fixed rule, not by how the tool scored.

AI-written input

Every tool on this prompt →

Product Desc · Marketing Copy · written by claude-sonnet-5-5 · 199 words

**Precision Without Compromise: The Stainless-Steel Ruler**

Measure once, cut once. This precision-milled stainless-steel ruler is built for makers, machinists, engineers, and designers who refuse to settle for "close enough."

Each ruler is CNC-milled from a single bar of premium 304 stainless steel, then finished with a satin brushed surface that resists glare and fingerprints. The graduations are etched deep rather than printed, so they will never fade, smudge, or wear away, even after years of daily use in the shop, studio, or lab.

Markings are accurate to within ±0.01 inch, with clear imperial and metric scales on opposite edges. Fine 1/64" and 0.5 mm increments make detailed layout work effortless, while bold numerals keep readings fast and error-free.

The ruler's perfectly flat, square-ground edges make it a dependable straightedge for scribing, marking, and trimming. A cork backing prevents slipping on any surface, and a hanging hole at one end keeps it within easy reach at your bench.

Corrosion-resistant, durable, and surprisingly light, this ruler is a tool you'll pass down rather than replace.

**Features:** - 12-inch / 300 mm length - Etched dual scales - Cork non-slip back - Rust-resistant 304 stainless steel

Precision you can trust, for life.

Show the full input

AI Humanize io output

186 words (input 199)

*Accuracy Without Failures: The Steel Ruler* You should cut only after measuring. This ruler is made for designers, craftsmen, and machinists who will not accept anything less than exactly correct! Each ruler is manufactured from one steel bar out of stainless-steel alloy 304 and is decorated with unique satin brushing, providing it with resistance to glare and against leaves of fingerprints. It has permanent markings, and the numbers are cut inside instead of being printed with ink, allowing them not to disappear nor smudge while being used continuously throughout the year! The ruler can determine the length with the maximum error of ± 0.01 inch; it has the imperial scale and the metric scale on opposite sides and additional divisions on the edges. Thanks to the ultra-thin divisions of only 1/64 inch and 0.5 mm thick, it is very easy to use the ruler even when making layouts. *The features of the ruler:* - The length of 12 inches / 300 mm - Etched double scale - Non-slip cork back - Made of stainless steel alloy 304

You can trust such precision for your whole life.

Show the full output
  • GPTZero1.00passed
  • Pangram0.00caught
  • Winston AI0.72passed
  • ZeroGPT1.00passed
  • Copyleaks1.00passed
  • Originality.ai0.96passed

Passed 5 of 6 detectors.

Every AI Humanize io 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.

Compare with

AI Humanize io vs
Humanize AI Pro
68.87 · rank #5
AI Humanize io vs
Super Humanizer
67.58 · rank #7
AI Humanize io vs
Clever AI Humanizer
69.02 · rank #4
Compare AI Humanize io with any tool → Every matchup →

Featured in

Best for GPTZero → Best for Originality.ai →

Questions about AI Humanize io

Answers are generated from the benchmark data and update every month. Last updated with the October 2026 cycle.

Is AI Humanize io good?

AI Humanize io ranked #6 of 14 in the October 2026 HumanizerBench cycle with an overall score of 68.24/100, above the field median of 66.78. On the parts of the score, it placed #9 of 14 on detector bypass, #10 of 14 on meaning preservation and #8 of 14 on readability.

Does AI Humanize io bypass AI detectors?

In the October 2026 cycle, AI Humanize io had a detector bypass rate of 66.5% (#9 of 14 tools). 0 of its 30 outputs passed all 6 detectors, and 30 were caught by at least one. Its average human-likelihood score from each detector, where 100 means every output was scored as human: Originality.ai 90.2, Winston AI 89.9, ZeroGPT 75.4, Copyleaks 73.6, GPTZero 70.0 and Pangram 0.0.

Can AI Humanize io bypass GPTZero?

In the October 2026 cycle, AI Humanize io's average human-likelihood score from GPTZero was 70.0 out of 100 (#7 of 14 tools against GPTZero). The highest average GPTZero score that cycle was 99.5, by WriteHuman. See every tool's GPTZero results.

Is AI Humanize io free?

A 2,000-word introductory signup allowance is offered. Its renewal period is not confirmed. Paid plans start at $15.00 a month, billed monthly.

Is AI Humanize io legit?

AI Humanize io is a working AI humanizer at aihumanize.io. HumanizerBench has tested it in 5 monthly cycles, most recently October 2026, when it completed 30 of 30 test runs. Every input and output from its runs is published with each detector's verdict.

Does AI Humanize io keep the original meaning?

AI Humanize io scored 68.6 out of 100 for meaning preservation in the October 2026 cycle (#10 of 14; field median 71.0). The score measures how close each rewrite stays to the meaning of the original text. Its readability score was 56.9 (#8 of 14). It drew no scoring penalties that cycle.

Which kinds of writing does AI Humanize io handle best?

In the October 2026 cycle, AI Humanize io did best on academic essays (70.2/100) and worst on news articles (60.4/100). On academic essays it ranked #4 of 14.

How has AI Humanize io ranked over time?

AI Humanize io has been ranked in 5 HumanizerBench cycles: #6 in June 2026, #10 in July 2026, #6 in August 2026, #4 in September 2026 and #6 in October 2026. Its overall score went from 72.95 in June 2026 to 68.24 in October 2026.

What are the best alternatives to AI Humanize io?

In the October 2026 cycle, 5 tools ranked above AI Humanize io. The top three were WriteHuman (#1, 74.89/100), StealthGPT (#2, 74.50/100) and Undetectable.ai (#3, 71.18/100). Compare AI Humanize io with any of them side by side.

Badges

AI Humanize io is ranked in the October 2026 cycle, so it can embed any of these cards for free, and the live file re-renders every cycle, including when a rank falls. Usage rules →

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Overall

Detectors

AI Humanize io: ranked #6 AI humanizer on HumanizerBench, October 2026

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