Need to determine if content is generated by a human or an AI? Not sure what the best AI detection tools are? In this article, we'll cover the best AI detection tools. Start using any of these to detect AI generated text.
In 2025, there is a plenty of high-quality AI detection tools that you can use to:
- Check if content is written by a human or generated by AI
- Evaluate how "human-like" AI-generated content is and what edits you can make
- Check for plagiarism
These tools are feature-rich and can help detect AI content.
It's important to note that AI detection tools are not perfect. Even the top tools on the market can frequently produce false positives. AI tools should only be used as a part of detection methods and not the only determining factor.
Before we go over the list of AI detection tools that can detect AI writing, let's discuss what you should be looking for in AI detection software.
What To Look for In AI Detection Tools
To pick the most effective tool for AI detection, you'll need to consider a few key features and characteristics.
Here are the most crucial factors to consider when choosing an AI detection tool:
- Accuracy: This is the most important factor. The tool should be able to accurately differentiate between human-created content and AI-generated output. False positives or negatives can significantly impact the effectiveness of the tool.
- Real-Time Analysis: The tool should be able to provide real-time results. AI detection needs to happen quickly to prevent potential misuses or fraud.
- Easy Integration: The tool should be easily integrable with your existing systems, whether they are content management systems or other tools. This includes having accessible APIs and documentation.
- Adaptive Learning: AI technology moves fast. The detection tool should constantly be updated and improve. Its detection algorithm should be modified based on new data and trends to ensure the most accurate AI detection.
- Security and Privacy: It's crucial for the detection tool to respect user data and ensures security. Make sure the tool is compliant with all relevant data privacy regulations and that it doesn't store any data unless you permit it.
- User-Friendly Interface: The tool should have an intuitive interface that's easy to navigate and easy to input your content and receive a detection output.
- Customer Support: As AI detection is a relatively new field, reliable customer support is necessary. The tool's provider should offer thorough documentation, tutorials, and responsive customer support to assist with any issues.
We'll cover the best AI detection tools on the market that you can start using today!
9 Best AI Detection Tools for 2025
Here are the top nine software to detect AI writing that access right now.
1. Originality AI
This is the best AI content detection on the market right now. Originality.AI is a comprehensive plagiarism checker and AI content detector designed for web publishers, content marketers, and SEO professionals. It offers highly accurate detection of AI-generated content with a great user interface.
The tool has a range of unique features including team management, scan history, auto-billing, and a forthcoming full site scan option. Originality.AI is a paid tool that costs $0.01 per one hundred words.
2. Content at Scale AI Detector
This free AI detection tool can be used to detect AI writing, including SEO, educational, marketing, and academic content. It can scan up to 25,000 character text and has multiple language support. It also provides a detailed report on the originality of the content.
This tool is best suited for businesses and organizations who need to check if content is generated by AI. This tool that detects AI is constantly updated to ensure accuracy of the detection.
3. Undetectable AI
This AI detector can check if your text will be flagged as AI-written content from generators such as GPTZero, OpenAI, Writer, Crossplag, Copyleaks, Saplinc, Content at Scale, or ZeroGPT. Additionally, its AI humanizer can turn AI generated text or content to more human-like engaging text.
Undetectable AI is ideal for content writers, bloggers, and researchers seeking to create undetectable content. This tool provides unique and search-engine-optimized text that can confidently bypass AI detectors.
4. AI Text Classifier
This AI detection tool free was developed by OpenAI. This tool is best suited for detecting the popular ChatGPT model. It can classify text into different categories such as news, sports, entertainment, etc. It uses advanced algorithms to classify text.
This tool can be used for various applications such as content moderation and sentiment analysis. AI text classifier is best for businesses and organizations that want to classify large amounts of text data. OpenAI
5. GPTZero
This free AI detection tool has over one million users. It can detect ChatGPT, GPT3, GPT4, Bard, and other AI models.
You can input up to 5,000 characters into the text box provided. It also accepts PDFs, DOCX, and TXT files to check for AI genration. This detect AI also has a chrome extension that you can install.
6. AI Content Detector
This software to detect AI writing is free and can check up to 1,500 characters at a time. You can also add a URL to detect AI for the content on the page.
The AI content detection feature is only available in the Writer app as an API. The tool provides a detection score from zero to one hundred percent.
7. Copyleaks
Copyleaks is an enterprise AI detection tool that can detect AI-generated content with 99% accuracy. It can be used to scan essays, dissertations, and other content for AI-generated text. It's also available as an API integration or a free Chrome extension. The AI detection tool supports multiple languages and can detect AI-generated text from ChatGPT, GPT-4, GPT-3, Jasper, and many others.
8. Sapling
The Sapling AI Detector detects AI generated text. It does this by giving you a score and highlights parts of the writing that it thinks might have been created by AI.
This AI Detector uses two methods to generate its score. Through analyzing the full text and individual sentences. It can even highlight whole sentences that it suspects are AI-generated. Like all the other tools on this list, it does have false positives from time to time.
9. ZeroGPT
ZeroGPT applies a variety of complex methods to review the text and then gives a result showing if the writing was done by a human, a computer, or a combination of the two.
This software to detect AI writing is very accurate. It identifies AI-generated text over with a 98% accuracy. This tool also works in any language. ZeroGPT has a very strict user data policy and will not post or keep any of your data.
Comparison of the Best AI Detection Tools in 2025
| Tool Name | Free/Paid | Key Features | Ideal For | Accuracy/Limitations |
|---|---|---|---|---|
| Originality.AI | Paid ($0.01/100 words) | AI & plagiarism detection, team management, scan history, full site scan (coming soon) | SEO pros, publishers, marketers | Highly accurate, intuitive UI |
| Content at Scale | Free | 25,000 character limit, multilingual, originality report | Businesses, educators, marketers | Frequently updated, solid detection |
| Undetectable AI | Paid | Bypasses multiple detectors, includes AI humanizer | Writers, bloggers, researchers | Helps rewrite AI text to bypass detectors |
| AI Text Classifier (OpenAI) | Free | Detects ChatGPT, text classification (news, sports, etc.), content moderation | Businesses, moderation, sentiment analysis | Best for classifying text by categories |
| GPTZero | Free | Supports PDFs, DOCX, TXT, Chrome extension, 5,000 character input | General users, educators | Detects GPT-3, GPT-4, Bard, more |
| AI Content Detector (Writer.com) | Free | Checks up to 1,500 characters, also accepts URL input, API available | Marketers, bloggers, website content reviewers | Limited input size |
| Copyleaks | Free + Paid | Enterprise-level, 99% accuracy, API, Chrome extension, multilingual support | Academic institutions, businesses | One of the most accurate |
| Sapling | Free | Sentence-level detection, scores & highlights suspicious parts | Editors, QA reviewers | May show false positives |
| ZeroGPT | Free | Detects human/AI/mixed writing, works in any language, strong data privacy | Multilingual users, content analysts | Claims 98%+ accuracy |
Frequently Asked Questions (FAQ)
What is an AI detection tool?
AI detection tools are software programs designed to identify whether a piece of content was written by a human or generated by artificial intelligence. These tools analyze patterns, language structure, and statistical anomalies to determine the likelihood of AI involvement.
How accurate are AI detection tools?
Accuracy varies by tool, but top-tier platforms like Originality.AI or Copyleaks claim over 95% accuracy. However, no tool is perfect — false positives and false negatives are possible, especially as AI writing tools become more sophisticated.
Can AI detection tools detect all types of AI-generated content?
Most tools are trained on popular language models like GPT-3, GPT-4, or Bard. While they perform well on common AI outputs, they may struggle with paraphrased content, heavily edited AI text, or models they haven’t been trained on.
Are these tools safe and private to use?
It depends on the provider. Tools like ZeroGPT emphasize strong data privacy and don’t store user content. Always review a platform’s privacy policy to ensure your data is protected, especially when analyzing sensitive or proprietary content.
Can AI detectors be used in education or academia?
Absolutely. AI detection tools are commonly used in academic settings to identify AI-assisted plagiarism or unoriginal work. Tools like Copyleaks and GPTZero are especially popular in schools and universities for this purpose.
Do AI detection tools support multiple languages?
Some do! Tools like ZeroGPT and Copyleaks support multilingual detection, making them suitable for global users. However, many tools still perform best with English content, so always check language compatibility before relying on them fully.
Should I rely only on AI detection tools?
No. These tools should be part of a broader content evaluation strategy. While helpful, AI detectors can misclassify texts. It's best to combine them with human judgment, plagiarism checks, and context-based review for the most accurate assessment.
Start Using AI Detection Tools Today!
Detecting AI-generated content is a critical task in today's digital landscape.
As AI continues to evolve and become more sophisticated, being able to distinguish between human and AI-generated content becomes more challenging. This article covered the top nine AI detection tools on the market.
Remember that AI detection tools should only be used as part of your AI detection process. These tools still deliver false positives.
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