Best AI Humanizer for Originality.ai
Originality.ai (originality.ai) is a subscription AI checker used by publishers, SEO teams, and content teams to detect AI writing and plagiarism. In October 2026, Originality.ai caught 48 of the 420 outputs from the 14 AI humanizers we tested (11.4%), the second lowest catch rate of the six detectors. We only test humanized AI text, so this says nothing about how Originality.ai treats human writing.
As of October 2026, the best AI humanizer for Originality.ai on HumanizerBench is WriteHuman, with the highest average Originality.ai score (100.0), followed by Stealth Writer (99.9) and Clever AI Humanizer (97.1).
14 humanizers · 30 prompts each · Last tested · Methodology v1.3.0
Originality.ai catch rate
| Month | Rate Catch rate | Caught | Outputs | Tools Humanizers | Avg score Avg human score | Rank |
|---|---|---|---|---|---|---|
| 11.4% | 48 | 420 | 14 | 87.2 | 5 of 6 | |
| 23.5% | 108 | 460 | 14 | 76.4 | 4 of 5 | |
| 55.8% | 221 | 396 | 12 | 45.3 | 1 of 5 | |
| 58.5% | 251 | 429 | 13 | 42.4 | 1 of 5 | |
| 53.8% | 210 | 390 | 13 | 46.9 | 1 of 5 |
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Caught means Originality.ai gave a human-likelihood score below 0.50 on a 0 to 1 scale. Avg human score is the mean score on a 0 to 100 scale. Rank 1 caught the most that month.
Humanizers that pass Originality.ai
Every AI humanizer we tested against Originality.ai in October 2026, ordered by its average Originality.ai score. 12 of 14 passed Originality.ai on at least 80% of their outputs. The top three passed 30, 30 and 30 of their 30 outputs, and first place changed hands in 3 of the last 4 monthly updates.
| Rank Position by average Originality.ai score this cycle. Learn more → | Humanizer | Average of Originality.ai's human-likelihood scores on this tool's outputs, where 100 means every output was scored as human. The table is ordered by this column. Learn more → ↓ | Outputs Originality.ai scored as human (a human-likelihood of 0.50 or higher), out of the tool's outputs it scored. Ranked by share passed. Click a count to read this tool's outputs. Learn more → | This tool's Originality.ai score in September 2026. "New" means it was not tested that month. Learn more → | Overall score across all detectors, after penalties. Learn more → |
|---|---|---|---|---|---|
| 1 | 100.0 | 30/30 | 91.4 | 74.89 | |
| 2 | 99.9 | 30/30 | 97.4 | 65.98 | |
| 3 | 97.1 | 30/30 | new | 69.02 | |
| 4 | 96.6 | 29/30 | 83.4 | 61.79 | |
| 5 | 96.3 | 30/30 | 89.5 | 74.50 | |
| 6 | 95.1 | 29/30 | 71.0 | 67.58 | |
| 7 | 94.0 | 29/30 | new | 61.74 | |
| 8 | 91.5 | 28/30 | 84.5 | 63.53 | |
| 9 | 90.2 | 28/30 | 93.4 | 68.24 | |
| 10 | 88.7 | 28/30 | 91.7 | 71.18 | |
| 11 | 85.7 | 26/30 | 86.8 | 68.87 | |
| 12 | 77.5 | 24/30 | 97.0 | 65.14 | |
| 13 | 55.5 | 16/30 | 78.5 | 62.75 | |
| 14 | 52.4 | 15/30 | 43.4 | 61.29 |
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Gold, silver and bronze mark the top three in this month's columns, ties sharing a color; Passed is ranked by share of outputs passed.
Originality.ai compared with the other detectors
Originality.ai gave the same verdict as Winston AI most often (86.2% of outputs) and as Pangram least often (28.1%).
| Detector | Caught | Rate Catch rate | Avg score Avg human score | vs Sep 2026 Change since Sep 2026 | Only it Only it caught | Agrees Same verdict as Originality.ai |
|---|---|---|---|---|---|---|
| 348 of 420 | 82.9% | 16.9 | n/a | 147 | 28.1% | |
| 151 of 420 | 36.0% | 61.3 | −11.2 | 1 | 70.7% | |
| 62 of 420 | 14.8% | 76.5 | −3.9 | 0 | 83.3% | |
| 58 of 420 | 13.8% | 85.9 | −19.1 | 0 | 81.4% | |
 Originality.ai | 48 of 420 | 11.4% | 87.2 | −12.1 | 1 | |
| 30 of 420 | 7.1% | 91.8 | −28.3 | 1 | 86.2% |
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Change is in points of catch rate. Only it caught counts outputs no other detector caught, of the 420 all six scored.
What Originality.ai catches
By writing type, Originality.ai caught humanized marketing copy most often (21%, 18 of 84) and application essays least often (4%, 3 of 84).
| Caught by | Marketing Copy | Discussion Board | Blog Post | Academic Essay | News Article | Application Essay |
|---|---|---|---|---|---|---|
| Originality.ai | 21% 18/84 | 14% 6/42 | 13% 11/84 | 10% 8/84 | 5% 2/42 | 4% 3/84 |
| Other five detectors | 31% 130/420 | 30% 63/210 | 32% 136/420 | 30% 128/420 | 22% 47/210 | 35% 145/420 |
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The second row pools the other detectors' verdicts on the same outputs. Each type had 3 to 6 prompts this month.
Outputs only Originality.ai caught
In October 2026, Originality.ai caught 1 humanized output that all five other detectors passed. That is 1% of the 69 outputs the others all let through. The example below has the widest gap between Originality.ai and the others, one per tool and prompt.
| Prompt | Humanizer | Originality.ai Originality.ai raw score | Others Lowest raw score from the others |
|---|---|---|---|
| Landing Copy · gpt-6-sol Marketing Copy | Phrasly | 0.01 | 0.67 |
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Raw scores run from 0 to 1, as on the evidence pages the prompt links open.
Of the 30 prompts, Originality.ai caught the largest share of tools on four prompts, including Landing Copy · gemini-3-8-flash (4 of 14) and no tool on nine prompts, including Howto Blog · gemini-3-8-flash (0 of 14). All 30 October 2026 prompts
Choosing a humanizer for Originality.ai
The humanizer ranking above sorts by average Originality.ai score alone, so it answers one narrow question: whose output Originality.ai scored as most human-like this cycle. If you publish for clients, check meaning as closely as the detector result. The Meaning column on the leaderboard shows how closely each tool's output keeps the input's meaning. A rewrite that drops a product detail or changes a figure you quoted has to be fixed by hand before it goes out.
Read real outputs before you commit. Each tool's results page links to its outputs from every run, and the evidence pages show each detector's verdict on each output.
For regular work, check how a tool handles volume: the word limit per run, whether it keeps headings, lists and links intact, and how its pricing scales with the number of words you process each month. If several people will use it, check whether a plan covers more than one seat.
Questions about Originality.ai
Is Originality.ai accurate?
On humanized AI text, Originality.ai has caught between 11.4% (October 2026) and 58.5% (July 2026) of outputs in the five months we have tested it. It had the highest catch rate of the detectors we test in three of them. We only test AI-written passages after a humanizer rewrites them, so we cannot say how often Originality.ai flags human writing by mistake.
Can Originality.ai be bypassed?
In October 2026, 372 of the 420 humanized outputs (88.6%) passed Originality.ai as human-written. It depended on the tool: the 14 humanizers passed it on between 50% and 100% of their outputs.
What is the best AI humanizer for Originality.ai?
As of October 2026, the best AI humanizer for Originality.ai on HumanizerBench is WriteHuman, with the highest average Originality.ai score (100.0), followed by Stealth Writer (99.9) and Clever AI Humanizer (97.1).
How does Originality.ai compare with other AI detectors?
In October 2026, Originality.ai had the second lowest catch rate of the six detectors we test: Pangram 82.9%, GPTZero 36.0%, ZeroGPT 14.8%, Copyleaks 13.8%, Originality.ai 11.4% and Winston AI 7.1%.
What kind of writing does Originality.ai flag most?
Over the five months we have tested it, Originality.ai caught humanized business emails most often (55 of 117, 47%) and application essays least often (132 of 396, 33%).
- Other detectors
- All detectors
GPTZero
Copyleaks
Winston AI
ZeroGPT
Pangram
- Picking a tool
- LeaderboardCompare toolsRankings by use case
- Data
- October 2026 evidence detector-scores.json Methodology