Copyleaks is an AI detector tool. It detects written text to determine whether it was generated using AI or written by a human writer by analyzing the text’s writing patterns.
However, Copyleaks isn’t always accurate. In many cases, it can generate a “false-positive” detection result in which it falsely flags your human-written content as AI-generated. This can happen if your content has some writing patterns that overlap with AI writing patterns.
The solution to avoiding AI detection in Copyleaks is humanizing your content so that there are no AI patterns in it detectable to the tool. And this is what this article is about.
In this article, we will discuss how to avoid AI detection in Copyleaks by humanizing AI text. But before we do, we need to understand what causes AI detection and how Copyleaks detects it.
What Causes AI Detection?
AI large language models (LLMs) such as ChatGPT and Claude generate text based on statistical probability.
These tools are trained to best mimic human language and generate textual outputs exactly how a human writer would when responding to user queries. To do this, they use two core metrics:
Perplexity
Burstiness
Let’s take a closer look at both of these metrics to better understand AI detection.
1. What is Perplexity?
Perplexity is a statistical measure of how surprising the text is, compared to human writing. LLM models are trained to generate text with minimum perplexity scores, in which the text is less surprising and more predictable to the model.
AI detectors are also trained to analyze and identify this pattern in text. It evaluates a text’s perplexity score to determine its potential origin. If a text’s perplexity score is low—the text is less surprising and has less unusual wording—Copyleaks considers it as AI generated. Whereas if a text has higher perplexity—it is more surprising and has unusual wording—it is less likely AI-generated and more likely human-written.
2. What is Burstiness?
Burstiness is a similar metric. It measures the variation in sentence structure and complexity throughout the content.
Like perplexity, LLMs are trained to produce engaging text that flows smoothly for maximum readability. As such, these tools learn to write with a uniform sentence structure and medium sentence length throughout the content. Their sentences exhibit low variation and complexity compared to human writing, generally speaking. The lower the burstiness, the lower the variation, and the higher the chances of the text being AI-generated. But higher burstiness signals higher variation, which signals human writing.
Copyleaks is trained to detect this variation in text. It evaluates the overall burstiness of the text and flags the content or parts of it that seem too uniform and stiff, whereas text with higher variation is regarded as human-written.
How Does Copyleaks Detect AI?
Copyleaks detects AI by evaluating the target text’s perplexity and burstiness score. A normal AI-generated text is bound to have low perplexity and burstiness, whereas human-written text naturally tends to exhibit higher scores in the two metrics.
But that’s not the entirety of it. Advanced AI detectors like Copyleaks work to evaluate some other quirks as well, including:
Function Word vs. Content Words Density: Function words are words like pronouns, prepositions, conjunctions, and articles, that connect other words but don’t contribute to the meaning of the sentence. AI tools write content with an overall less density of function words compared to human writers. On the flip side, AI tools tend to lean more on content words, which are words like specialized nouns, main verbs, complex adjectives; compared to human writers.
Wording Difficulty: AI tools’ wording tend to be relatively more difficult than most human writers’.
Prepositional vs. Adjectival Modifiers: Another difference between AI and human writing is that human writing leans more on prepositional modifiers, compared to AI that leans more on adjectival modifiers.
Formal Conjunctions: LLMs are frequent in using formal conjunctions, like “therefore” and “in addition.” Human beings, in contrast, lean less on these and more on varied conjunctions, such as “and so.”
Cohesive Devices: Cohesive devices, like pronouns and linking phrases, are more common in human writing as compared to AI writing.
These differences don’t necessarily fall outside of perplexity or burstiness. Instead, these two are broader metrics that serve as proxies for a much broader suite of underlying linguistic features that advanced detection models analyze, especially those using complex machine learning and deep learning architectures.
But all of these are notable differences between AI and human writing, observed on large scales, which can be the deciding factors in whether your content appears AI-written or human-written to an AI detector like Copyleaks.
How to Avoid AI Detection in Copyleaks?
The only way to avoid Copyleak’s AI detection is to humanize the content, or the parts of it, which the tool flags as AI-written. And depending on what AI pattern is causing the detection, there are specific techniques to humanize the content.
But let’s suppose a piece of text is completely AI-written, in which case, multiple AI patterns must be causing AI detection, which can be difficult to distinguish. In this case, there are several humanizing techniques you can use to make the text feel human-written and bypass AI detection. Here are these techniques:
1. Reword and Use Synonym
This technique focuses on increasing the text’s perplexity.
Rewording and synonymizing the text can help draw the text away from low perplexity scores, though this alone is not sufficient to humanize the text and reduce its AI detection, but it’s effective.
Since AI content is heavily characterized by content words and a lack of function words, one of the effective means to eliminate its AI detection is adding more function words. Reword the text by including pronouns, different connectives, prepositions, and adverbial modifiers. These additions will not directly contribute to the meaning but change the sentence structure by introducing complications that are usually not found in AI text.
Even adding simple functional words like prepositions can break the monotonous content-word structure of AI sentences and lead to higher perplexity, acting as a negative-weight signal to Copyleaks and lowering the AI detection score.
Take for example, changing a phrase like "the complex, innovative, and functional interface" to "the interface, which is complex, yet rooted in innovation, offering functionality" introduces a more varied sentence structure that increases perplexity. This not only diversifies word choice but shifts the underlying grammatical structure away from the predictable patterns preferred by the LLM and detected by Copyleaks.
2. Vary Sentence Structure and Length
This technique focuses on increasing the text’s burstiness via changes in structure and length of sentences.
Varying sentence structure and length is one of the most effective humanizing techniques to reduce AI detection, as it introduces variations into the text that aren’t found in AI content.
Increasing Sentence Length
Human writing, by and large, varies between short and long sentences. Some parts of the text are to the point while others can drag. However, this isn’t the case in AI text. AI tools have a uniform writing, so they tend to write sentences of similar lengths throughout the content, as well as paragraphs and individual sections. This uniformity (or lack of variation) signals a low burstiness to AI detectors, making Copyleaks to mark it as AI-written.
When humanizing, tweak and alter sentences to change their lengths and vary between a mixture of both short and long sentences, as well as in between. You can cut one regular sentence into two shorter clauses of 8-10 words and join two regular sentences to formulate a bigger sentence of 26-32 words using conjunctions (“or” and “but” words).
Varying Sentence Structure
You must have learned the standard formula of subject-verb-object (s-v-o) for formulating sentences in English. AI chatbots tend to lean on this same standard formula, with a heavy use of conjunctive phrasing in which it uses connectors like “because” and “therefore” to connect ideas and try to make the text seem cohesive. However, its text is often cohesive only on a surface level.
A better and more natural way to write is avoiding falling on the same basic s-v-o structure and instead restructuring AI sentences to begin with lengthy dependent clauses or introductory adverbial modifiers that place the main idea near the end. The conjunctive phrasing, on the other hand, can be simply reduced by removing unnecessary conjunctions and instead phrasing the ideas more strongly.
3. Enhancing Cohesiveness and References
A problem with AI-generated writing is that it isn’t very good at maintaining cohesion, especially when it comes to referencing back to something. This problem shows up where there’s a pronoun like “this”, for example, that doesn’t clearly point back to its noun. The connection between paragraphs also tends to be unclear even though the sentences feel fine to read. The overall text remains stitched but loosely.
Fixing these issues can be tricky, because pronoun usage isn’t always clear and can be subtle. So, you will have to examine the AI text closely and make sure all pronouns, especially like “it,” “this,” “these,” and “that” clearly refer back to their antecedent, to humanize it.
A stronger flow of references and clear use of cohesive is also a characteristic of strong human writing.
4. Use Your Personal Voice
An author’s personal voice is full of quirks and subjectivity. It has the potential to bring a lot of variation to the content because AI writing itself is dull—general, neutral, and objective. You can call it lifeless. But human writing, coming from a human, tends to have a unique personality.
Your author's voice can introduce elements to the content that AI chatbots otherwise could never produce due to these elements being statistically improbable to LLMs.
When you use your unique voice to add personal examples, opinions, anecdotes, or analogies, you increase uniqueness and variation in the writing. AI tools are not trained to incorporate these unique features into their writing, which is why these can lower AI detection.
5. Use Conversational Markers
Since AI writing is objective, it lacks conversational markers. These are phrases that connect ideas. There are various conversational markers, but I’m specifically talking about the ones with first-person pronouns, like “in my case” or “in my opinion” and second-person references ("you will notice").
AI writing is free of these phrases that suggest that the author is personally commenting about something, again, due to its objectivity. And while conversational markers can add a sense of subjectivity to the writing, which should be totally fine in most cases, they can also help lower detection scores.
You can add these phrases into the AI content to break the AI pattern of objectivity and lower Copyleaks AI detection.
6. Adjust the Tone and Emotional Depth
Like the lack of an author’s voice and subjective wording, AI writing also lacks two essential traits of human writing: a unique tone and emotional depth.
Instead, AI writing is characterized by a robotic formal tone that feels mundane and redundant to read and little or no emotional depth. The text conveys a message but it fails to stand out and connect to readers on an emotional level. Apparently, this is due to AI’s neutrality—it is neither persuasive nor informal. AI might offer us balanced writing, but it is almost unenjoyable to read, especially when it's everywhere.
On the flip side, most human writers and businesses have always maintained a suitable tone and voice to better connect with their customers. An emotional voice and storytelling is also used to tap into consumers’ emotions.
Since AI writing lacks these traits, you can utilize them to make the writing feel more human and less AI-like, both to human readers and AI detectors like Copyleaks. Matching the tone to the audience and purpose, whether its casual, academic, persuasive, or satirical, and using linguistic features such as humor, idioms, and colloquialisms contributes to the text’s human footprint and draws it away from robotic formality.
7. Use a Humanizer
An AI text humanizer, like Paraphraser.us’ Humanizer, is a tool that rewrites your text to make it sound more human-written using various humanizing techniques—including changing word choice and sentence structure—without changing its original meaning.
Paraphraser.us’s smart humanizer is developed using AI’s machine learning and NLP (natural language processing) to turn robotic texts into human-written content within seconds. It scans your AI text to understand its meaning and context before humanizing it with context-aware text to add subtle human differences that help increase perplexity and burstiness to evade AI detection in most advanced AI detectors, including Copyleaks.
All in all, Paraphraser.us offers you a simple solution to humanizing your text if your goal is to avoid AI detection: Simply, input your text into the tool, click the button, and you’re done.
This is one of the easiest ways to humanize AI text. It makes sure your text bypasses Copyleaks AI detection and also feels human-written to read.
8. Increase Specificity
AI tools are trained on generalized data. What they produce in most cases tends to be vague and general. It lacks the specificity that human authors can add to the content. For example, you might have read health-related blog posts. The author or expert’s introduction can be quite specific in the article while stating their profession, degree, institute, etc. This specificity is not usually found in AI text.
In this case, adding specific details and information to the content and replacing generic phrases can introduce wording that is uncommon in AI writing, increasing the text’s perplexity and lowering detection in Copyleaks.
9. Allow Natural Imperfections
LLM are immune to the natural imperfections and mistakes of human writing. Their work rarely ever contains minor grammatical errors. This flawless grammar and a mechanical consistency in writing style is also a strong characteristic of AI writing. In contrast to AI, humans’ work tends to be imperfect—sometimes with misspelling, sometimes with inconsistent use of contractions, or sometimes with other stylistic inconsistencies.
And while mistakes or inconsistencies are looked down upon, it can be well-argued that “some” minors do inevitably make their way to content in many cases, because, as the saying goes, “to err is human nature.” These unintentional stylistic inconsistencies across the content could be just one of the reasons why Copyleaks see your content as human-written.
If you’re really keen on humanizing AI content and avoiding detection, feel free to embrace the natural imperfections of human writing. Some minor stylistic inconsistencies can also be introduced intentionally into the content to make it feel human-written.
However, don’t force errors or too many inconsistencies into the content, especially visible ones, or it will make your content look weak and unprofessional and can raise concerns about your credibility as a writer. I also do not encourage anybody to add mistakes like misspelling or punctuation errors to their content just to evade AI detection—minor, unintentional stylistic inconsistencies are enough to signal human nature. Forced errors can dilute your content and reduce its quality. Overuse of such techniques can also make your content unreadable and unenjoyable, rendering it unengaging.
How Not to Humanize AI Content
There’s always a good and bad way to do something. Likewise, there’s a bad way to humanize AI content: by introducing breaks and errors into the content.
You might see some people using breaks to try and humanize AI content, using various techniques, including:
Using ellipses (...) to add breaks in sentences.
Writing one sentence per line.
Writing only very short sentences (8-10 words) throughout the content.
Removing transitions and conjunctions, making ideas link abruptly.
Using too many punctuation marks to create an unnatural flow of text.
Adding misspelling on purpose.
Adding punctuation errors.
Adding “why?”, “how?”, and similar short questions everywhere.
Copyleaks and other AI detectors can be easily tricked using these techniques. But these are all bad practices, especially using ellipses, writing one sentence per line, cutting out transitions, overloading the text with punctuation marks, and adding misspelling and punctuation errors. People using these methods to humanize text are often desperate and willing to sacrifice their content itself just to prove it’s human-written, but all of these practices only reinforce the idea that the text probably isn’t originating from a human. Otherwise why these desperate breaks? But regardless, breaking your text, while effective, kills the quality and even the message it’s supposed to deliver.
If you really want human-written content, it’s better to write it yourself from the beginning than resorting to these practices. Your content might run into some detection but it will at least be “human-written” and meaningful.
Conclusion
Copyleaks is an AI detector tool that checks whether your content appears human-written or AI-generated. However, the tool can be incorrect in its assessment and mistakenly flag your human-written text as AI-written. To avoid this unwanted detection, you can humanize your content using various humanizing techniques shared in the guide, including:
Rewording and using synonyms
Varying sentence structure
Enhancing cohesiveness and references
Using your personal voice
Using conversational markers
Adjusting the tone and emotional depth
Using an AI text humanizer like Paraphraser.us’s
Increasing specificity
Allowing natural imperfections into the content
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