6 Best Free AI Content Detectors for Bloggers & Copywriters

Content writers have been writing manually for a long time, but with AI came AI writing tools and detectors such as free AI content detectors.

So these tools have become handy for ANY content writer today to distinguish between genuine human work and machine work.

These tools did not exist until the arrival of Generative AI.

But with the invention of ChatGPT and Gemini (Formerly, Google Bard), AI content detectors have become popular and are still evolving.

This is because search engines do not prefer content produced by AI content writing tools.

Hence, AI content detectors are coming into the picture. However there is a catch, not all AI content detectors are the same.

Therefore it is not easy to understand which tool is better as results may vary from one AI detector to another.

Moreover, no industry-specific tool has been legally prescribed for AI content detection. But tools such as Copyleaks and Originality are popularly used by most premium subscribers

Most AI content detectors also offers a feature to humanize AI content for search engines. This makes it even far more difficult to judge the originality of content.

Today you will find many AI content detection tools, so you may have to find a tool that works best for your business.

This article will help you to find some of the best free AI content detectors on the market without taking a premium subscription.

What are AI content detectors?

AI content writing tools are usually good for research purposes and findings on more details on a particular topic.

But they aren’t good for search engines because they don’t prefer AI content unless it is very high quality.

This is because most AI content writing tools, including ChatGPT-produced content, are considered robotic rather than human.

This is where AI content detectors have become more valuable in producing and publishing texts.

Google says, “Our focus is on the quality of content, rather than how content is produced”

However, recent algorithmic changes by Google in March 2024 deindexed hundreds of websites, targeting AI-generated spam content.

This shows the importance of quality human-generated content.

You cannot simply copy content directly from AI Tools because they sound robotic and mimic the originality of others’ content.

Hence AI-generated content could be against your copyright and ownership.

This is where AI content detectors usually come in handy for writers and businesses taking content writing services from a third party.

In short, AI content detectors help you figure out if what you are trying to publish is genuine and human.

Why Free AI content detectors?

If you are involved with writing blogs and articles you probably know how hard it is to create effective content.

But after all the hard work if your piece of content is recognized by search engines as AI-generated all your labour may go in vain.

Also, assigning your content writing tasks to a freelancer or a third party is very expensive because the work must pass various parameters.

One such parameter widely tested today is AI content detection and it utilises tools that incur costs to pass the checking of AI detection test.

Therefore you need an effective tool to check the quality of AI detection and this is where free AI detector tools are a saviour.

Hence with free AI content detectors, you can immediately check its quality to ensure that your content is not robotic.

A free AI content detector may not be as effective as a premium one, but it can save some of your precious time to ensure you are doing the right thing.

Complications and Challenges Associated with Free AI Content Detectors

Several AI content detectors can test whether your content is artificial or not. The main challenges associated with free AI detectors are:

• Most free AI content detectors offer only a basic level of AI detection
• Even though an AI content detector may solve the AI puzzle for you, it has to be revalidated by a human again
• AI content detectors may try to be accurate, but they aren’t 100% accurate
• They aren’t recognized as industry-standard tools
• They offer limited words/characters at a time
• Results vary from one AI content detector to another
• They may also provide output resulting in declaring manual writing as AI-detected
• These tools aren’t responsible for any damage caused to your business
• These tools mostly support a single language i.e. English and target only ChatGPT content

Therefore, considering these limitations, you may find some potential risks associated with inaccurate results.

Hence, for professional content analysis, consider exploring freemium options, free trial periods of paid detectors, or developing your detection skills.

6 Best Free AI Content Detectors for Bloggers & Copywriters

1. QuillBot AI Detector

Quillbot is one of the best AI content detectors. It is free to use and offers a multilingual facility, which most tools don’t offer. The main purpose of QuillBot AI content detector is to detect AI-generated content that writers produce. It allows users to test their writing in four different languages: English, Spanish, German, and French.

It also provides four different KPIs to test the quality of AI detection such as 100% AI-generated content, AI-generated and AI-refined, Human Written and AI Refined and Human Written detection. This allows you to thoroughly guess the type quality of the content in detail.

However, while Quilbout AI Detector is highly advanced in detecting AI-generated content, Quillbot also admits that no detectors are 100% reliable, no matter what their accuracy scores claim. Therefore it is important to use other sources as well to test the quality of AI detection and not rely only on a single tool.

Advantages of Quillbot AI Content Detector:

Some of the best features cum advantages of QuillBot AI Detector are:

• It is free to use with unlimited testing iterations
• Scans unlimited documents detect AI-generated text and provide detailed analysis.
• It allows 1200 words to be tested in one go for free
• A better AI detector that differentiates between text generated by AI and text being refined using a detector to bypass detection
• More clarity on the quality of content detected
• Perfect for all kinds of projects
• Fast reporting

Disadvantages:

• Quillbot AI Content Detector can’t detect images, video, rich media content etc.
• With advances in AI models, it can be hard to distinguish between human-written and AI-generated content over time

Cost:

It is free to use

2. Scribbr AI Detector

Scribbr is also a free AI Content Detector. It allows you to identify AI-generated content produced via popular AI language models such as Chatgpt, Gemini, Copilot and more. Scribbr also allows unlimited content scanning for free. It is a free AI content detector which allows you to scan a maximum of 1200 words at a time. If you look at the Scribbr user interface you could find it is quite similar to Quillbot AI content detector.

The detector also offers 4 language models: English, Spanish, German and French, making it a multilingual AI content detection platform. Moreover, it also offers four types of detection and they are AI-generated text detection written using GPT2, GPT3, and GPT3.5 models. It also detects refined text content generated by AI or altered via some AI tools. Scribbr also detects human-written texts that are refined or altered using AI tools. It also detects text written by humans completely without the help of any AI or paraphrasing tool.

Advantages of Scribbr AI Content Detector:

There are many advantages of Scribbr. Some of the main advantages of this AI detector are:

• One of the most popular free AI content detection tools
• Scribbr has millions of user base
• It uses advanced algorithms to detect human-written, AI refined and AI-generated content
• No account is needed to use the Scribbr AI detector
• Provides detailed analysis in terms of reporting
• Detects ChatGPT models like GPT 4 in a premium version
• Perfect tools for content writers and bloggers
• It protects the academic integrity of students and professionals

Disadvantages:

• 100% not guaranteed in terms of accuracy
• You have to scan long pieces of text or paragraphs for better AI detection

Cost:

100% free to use

3. Sapling

Sapling is another great free AI content detector that is free to use. The Sapling AI tool was developed by former researchers at Berkeley University, Standford, Meta and Google. This tool works on all recent models such as GPT-4, Gemini, Claude 3, Llama 3, and Mistral v0.3. Sapling AI Tool has a simple user interface to carry out AI-generated text detection, however, it also allows you to upload your text content via PDF and WORD files.

This tool automatically generates reports in a horizontal bar chart showing the percentage of generated content as fake while it tests for AI content. Hence, if this tool finds that 100% of the text is AI-generated, the bar chart highlights its KPI from green to dark red. It also highlights the overall text and sentences in dark red to detect which texts are AI-generated.

In short, Sapling recognizes AI text patterns and offers free trials for AI detection. For premium users, Sapling offers Chrome extensions and API keys. Accordingly, the Sapling AI tool is very good at catching AI-generated texts. It can detect 97% of AI-generated text correctly.

Advantages of Sapling AI Content Detector:

• Free users can query up to 2000 characters per query (400 to 500 words)
• Premium users can query up to 50,000 characters per query (10000 to 12500 words)
• Results can be visualized for the entire text and each sentence in its report layout
• You can upload DOC/PDF text content files directly for AI detection
• Sampling also comes with regular updates to fine-tune its AI detection tool
• Offers a Chrome extension for Chatgpt for premium subscribers
• It comes with better text normalization

Disadvantages:

• It has test limitations like other AI content detectors

Cost:

Offers both free and paid subscriptions

4. ZeroGPT

There are numerous ZeroGPT websites with similar brand names available on the internet, however, the one that I am listing here is ZeroGPT.com. ZeroGPT is one of the most advanced and reliable free AI content detectors for detecting AI-based texts generated using OpenAI and Gemini.

With the ZeroGPT free plan, you get up to 15000 characters for checking per AI detection of your content in one go while the premium plan offers 100000 characters. It offers a simple user interface to copy and paste your text content or upload content via the upload option.

As per ZeroGPT.com, this tool is trusted and used by millions of users around the world. While it has more advanced features for premium users,  the free features are worth to be noted as well. Features like AI sentence highlighting with accuracy percentages, batch file processing, and automatic PDF reports are some of the unique features available in the free plan. As per the official website, it also claims to support all languages with high accuracy.

Advantages of ZeroGPT Free AI Content Detector:

• Free to use but also has a premium subscription plan
• It uses DeepAnalyse technology which is a pioneering research in AI content detection
• ZeroGPT is available on WhatsApp and Telegram (Available for Max Premium Subscribers)
• Free additional tools are available to enhance your writing skills
• Export results to PDF (Available on PRO plan)
• Get highlights for sentences that are AI-plagiarized
• AI detection accuracy rate up to 98%
• Everyone can use the tool including students, teachers, writers, freelancers, copywriters etc.
• Get the API key from your dashboard (For API business plan users)

Disadvantages:

• The free plan comes with ads

Cost:

Offers both free and premium subscriptions which include the PRO and MAX plan

5. Phrasly.AI

Imagine writing a school essay or a blog and wondering—“Did this sound too robotic?” That’s where Phrasly.ai steps in. It’s an AI content detector that checks whether your text seems human-written or AI-generated. Students, teachers, marketers—anyone can use it to ensure their writing sounds authentic.

It’s like having a smart friend who reviews your work before you submit it. Therefore In a world blending human and AI writing, Phrasly.ai’s detector is a helpful guide, not a judge. Think of it as a supportive tool in your journey to write more honestly and clearly.

Advantages of Phrasly’s Free AI Content Detector

• Quick Feedback: Instantly shows if content reads like AI or a human wrote it
• User-Friendly: Clean interface—just paste and check. No tech background needed
• Reliable Algorithm: Built with precision to detect AI writing patterns
• Ideal for Educators: Helps teachers detect AI use in assignments fairly
• Supports Ethical Writing: Encourages originality and honest writing habits
• Improves Content Quality: Writers can tweak tone and style for better human-like flow.

Disadvantages to Consider

• Not Always 100% Accurate: Like any AI tool, it may sometimes misclassify content
• Limited Free Usage: Heavy users might hit a cap without a paid plan
• Could Create Over-Reliance: Some may depend too much on detection tools instead of learning authentic writing

Cost:

Phrasly offers both free and premium options. The free version is great for casual checks.

For regular users—like educators or content creators—the premium plans offer more scans and detailed results.

6. Undetectable.AI

Undetectable.ai is a free AI content detection tool that also comes along with a humanizer to bypass AI content from detection. Its simple user interface allows you to copy and paste your content to check if submitted content is flagged as AI-generated. However, this not only detects content on its platform but also checks and provides an analysis of how other popular AI detectors perceive the same content within the report.

Other tools available for AI detection include OpenAI, GPTZero, Writer, CopyLeaks, CrossPlag, Sapling, Brandwell (Formerly known as ContentAtScale) and ZeroGPT. This feature makes Undetectable.AI a unique AI tool. The basic AI detection service is free, but if you opt for a premium plan you can get more advanced features like text humanization and bypassing AI detection.

Undetectable.AI is not a full-fledged AI content detector however it combines multiple AI detection tools, offers free AI detection, and includes AI humanization tools. But ultimately you need to keep in mind that free detectors have limitations compared to premium versions in terms of detailed analysis.

Advantages of Undetectable.AI:

• Free to use
• Get 250 free words for registering and logging in
• Options for readability level and purpose tone to adjust humanization strength (Premium)
• Multiple AI detection tools under one platform
• Detects and recognize text by human, AI+Human, ChatGPT, GPT4, Claude and Gemini
• Instant access to AI detection
• AI Humanizer and detection remover for bypassing AI detection
• All writers & content creators can use
• Built for writers, researchers, bloggers and content creators
• Industry recognized
• Supports multiple languages

Disadvantages:

• It is more likely a AI humanizer and a plagiarism tool rather than a core AI content detector

Cost:

It is free to use. Offers a premium subscription at 14.99 USD/per month

Conclusion:

AI content detectors are a valuable tool for any business. Therefore, this list will help you become aware of some of the best free AI content detectors.  You can use it to test the originality of your content to some extent, although no AI content detectors are perfect.

These tools are also valuable for students, educators, content creators, and copywriters to test and detect machine content for their papers or on websites. Therefore this will help you to avoid the bad side of writing and gain your trust.

The best thing about free AI content detectors is that you can rely on more than one AI content detector because it is free to use so you don’t need to spend anything to test the credibility of your content. You can test your content thoroughly to ensure that what you have written or published on your site or blog is genuine and human.