6 Best AI Detection Tools in 2024 (Free & Paid)

In an era where AI-driven content creation is becoming more common, the need for teachers, professors, employers, and others to distinguish between human and machine-written text is crucial for upholding authenticity. This article explores some of the best AI detection software available, each designed to help you identify AI-generated content effectively.

What are AI detectors?

AI detectors are online tools designed to identify whether content has been generated by artificial intelligence using large language models (LLMs) rather than written by a human. These detectors analyze various aspects of the text, such as sentence structure, word complexity, and writing style, to discern patterns that typically signify AI authorship. As AI technology becomes more prevalent in creating blog posts, essays, and even technical documents, tools to detect AI writing have become essential for maintaining the authenticity of content across different sectors, including academia, publishing, and digital marketing. By leveraging machine learning algorithms and linguistic analysis, AI detectors help ensure the integrity of content, making them indispensable in today's digital landscape.

The Best AI Content Detectors in 2024

Our guide to the best AI content detection tools includes in-depth reviews to help you choose the right tool for your needs. Each review assesses AI detection accuracy, comparing outputs from humans, ChatGPT, Claude, and a mix of content generated by human and AI models. We also provide detailed insights on how to use each tool effectively, highlighting specific content detection features each tool offers.

Additional capabilities of each tool, such as plagiarism checking or readability scores, are listed to give you an idea of what each offers beyond basic detection. Finally, pricing plans are outlined to present options that will best suit your budget. Whether for academic integrity, publishing purity, or content creation, our list aims to equip you with the AI content detectors entities and individuals can use to maintain authenticity in their writing.

1. Wordvice AI Detector–best AI detector for academic documents

The Wordvice AI Detector is our top choice for the best AI content detectors currently available. It is particularly adept at detecting AI-generated content in academic documents such as research papers, dissertations, and class assignments. It also performs well in detecting non-human content in professional contexts and is compatible with various language models, as well as offering an AI content check in several languages, ensuring a broad application range.

The Wordvice AI Detector is an effective tool for quickly checking documents for human- vs. AI-generated content, providing clear and easy-to-understand results of the review. One of its strongest advantages is that subscribers gain access to a variety of document editing tools, including the AI Proofreader, AI Paraphraser, AI Translator, AI Plagiarism Checker, AI Summarizer, and AI Grammar Checker. This comprehensive suite of tools makes it easy for users to enhance the quality of their writing, ensuring that their content is both original and polished, all within the same AI writing assistant interface.

Whether you're verifying academic integrity or ensuring professional content authenticity, Wordvice stands out as one of the best AI detection tools, making it a reliable choice for those needing thorough AI writing detection.

AI Detection Accuracy:

• Human: Detected as 28.57% AI-generated.

• ChatGPT: Identified with high confidence as AI-generated, around 99.94% certainty.

• Claude: Marked as 99.94% AI-generated.

• Mixed: Accurately determined 46.42% of the text as AI-generated (within 5% complete accuracy), demonstrating the tool's effectiveness in mixed-content scenarios.

How to use:

Simply subscribe to Wordvice AI Premium, then paste your text into the input box for instant AI detection. Within a few seconds or minutes (depending on the length of the input text), the AI Detector evaluates the writing and reports the percentage of text likely to have been originally written by AI.

Additional Features:

• Plagiarism Checker
• A suite of easy-to-use AI writing tools that can directly improve articles
• A free library of resources for writers

Wordvice AI Detector pricing:

Wordvice AI’s Premium plan provides full access to the AI Detector and other AI revision tools. Subscription plans start at $9.95/month and also a Team plan with optional numbers of seats available.

2. GPTZero–most user-friendly AI detection program

GPTZero is excellent at identifying AI-generated content from models like GPT-3, GPT-4, Gemini, Claude, and Llama, employing what it terms a “seven-layer detection framework” to pinpoint such content. While it humorously notes that it's “not as delectable as a seven-layer dip,” its accuracy varies.

AI Detection Accuracy:

• Human: Confidently recognized 99% as human-generated.

• ChatGPT: Strongly identified 100% as AI-created.

• Claude: Strongly identified 100% as AI-created.

• Mixed: Classified as human with a blend of 76% human, 17% mixed, and 7% AI (within 20% accuracy).

How to Use:

Upon starting, GPTZero offers an introductory tutorial, though users can bypass this for a hands-on approach. The platform allows text between 250 and 5,000 characters to be analyzed either by pasting directly or uploading as a file. The scanning process is quick and displays results immediately.

The scan summary includes a document classification, such as "human," and a probability distribution from human to mixed to AI. Users have options to keep their reports private, share them, or download them, with the results accessible from the dashboard for future reference.

Additional Features:

• Google Chrome extension named Origin
• Plagiarism detection tool available when subscribing to the Premium Plan
• API for large-scale corporate use
• Integrations with educational tools such as Google Docs, Microsoft Word, Canvas, and Blackboard

GPTZero Pricing:

GPTZero offers a free basic plan that includes up to 10,000 words per month and twenty scans per hour. Premium packages start at $10/month for 150,000 words.

3. Originality.ai–best AI detection software for creators

Originality.ai is a reliable AI detector that serves content creators, digital agencies, and authors, providing analysis across several AI models like GPT-4 and Claude 2. However, it may not meet the needs of many students writing admissions essays and class papers. It is among the best ai detection software programs and consistently effective with ChatGPT-created content, though it shows variability with other content.

Originality.ai offers two distinct AI detector tools: Standard 2.0 and Turbo 3.0. Turbo 3.0 is recommended for those requiring stringent AI detection, claiming to spot any hint of AI usage. Standard 2.0 is suited for more lenient applications, like AI-assisted editing.

AI Detection Accuracy:

• Human: Identified 99% as original, 1% AI

• ChatGPT: 0% Original, 100% AI

• Claude: 0% Original, 100% AI

• Mixed: 73% Original, 27% AI (within 15% accuracy)

How to Use:

Setting up an account with Originality.ai is simple. Users can input or paste text, select a detection model, and initiate the scan. Although user-friendly, the web application's response time could be decreased to enhance user experience.

The platform displays an overall originality score and provides sentence-by-sentence highlights. All scan results are saved to your user dashboard, and you can manage team member access levels.

Additional Features:

• Plagiarism checker
• Readability assessment
• Automated fact-checking tool
• API for seamless integration with your existing technology stack

Originality.ai Pricing:

While there is no free plan available, new users can obtain 50 credits upon confirming their email address. For ongoing use, there are two premium options: a flexible $30 pay-as-you-go plan and a monthly subscription at $12.95.

4. Winston AI–best ChatGPT detector with AI revision features

Winston AI excels as a specialized AI detection program, compatible with GPT-4, Google Gemini, and various large language models (LLMs).It leverages advanced algorithms and deep learning techniques to analyze writing styles, structure, and vocabulary. Ideal for educators, publishers, and content managers, Winston AI offers detailed insights into the authenticity of written materials.

Users can easily integrate Winston AI into their workflow, using its intuitive platform to upload texts, paste content, or import documents directly from URLs. With its ability to deliver fast and reliable results, along with additional features like plagiarism checks and readability scores, Winston AI stands as a formidable option among the best AI content detection tools.

AI Detection Accuracy:

• Human: Likely around 76% human.

• ChatGPT: Strong indications of AI generation, with a minimal 2% possibly human.

• Claude: Strong indications of AI generation, with a minimal 5% possibly human.

• Mixed Content: Assessed as 0% human (an almost 0% accuracy rate).

How to Use:

To start using Winston AI, sign up for a 7-day free trial. You can analyze your content by pasting text, uploading files, or importing from URLs. The platform requires a minimum of 500 characters per test and rates the likelihood of the content being human or AI-generated on a 0-100 scale. Results include highlighted AI-generated sentences and a readability score. However, the website's response time is reported to be relatively long.

Additional Features:

• Plagiarism detection (2 credits per word)
• Readability analysis
• OCR capabilities for scanning documents, images, and handwritten notes
• Extensive browser extension support, including for Microsoft Edge, Opera, Firefox, and Google Chrome
• Customizable GPT settings

Winston AI Pricing:

The service initially provides a free trial, allowing up to 2,000 words over seven days. Premium plans begin at $12/month for up to 80,000 credits or $19/month for up to 200,000 credits. Tailored plans are available for those needing additional capacity.

5. Smodin–best AI detection tool for most language models

Smodin provides a comprehensive range of writing tools, including a reliable AI content detector that integrates well with ChatGPT, Bard, and other AI generators. It demonstrated strong performance in multiple tests, but stumbling with content from Claude. Notably, testing on different days yielded varying results, suggesting possible updates or retraining of the tool over time.

AI Detection Accuracy:

• Human: Predominantly recognized as human-authored. (0% chance of being AI-generated.)

• ChatGPT: Identified as AI-created. (100% chance of being AI-generated.)

• Claude: Mixed detection of human and AI authorship. (79% chance of being AI-generated.)

• Mixed Content: Appears as a blend of human and AI writing. (59% chance of being AI-generated; within 10% accuracy.)

How to Use:

Smodin is straightforward to use—simply input your text into the provided box or upload a document. The free plan allows up to 5,000 characters, while the Ultimate plan accommodates up to 50,000 characters, with additional scaling available through a bespoke enterprise plan. Smodin’s interface also highlights AI-generated sentences and portions of text.

Additional Features:

• Plagiarism detection
• Tools for summarizing, rewriting, and generating text via AI

Smodin Pricing:

There's a basic free option offering five uses per week. Unlimited access plans begin from $12/month to $63/month when billed annually.

6. Copyleaks–detect AI and get a plagiarism check

Copyleaks AI Content Detector is a well-known and highly AI detection site and is compatible with GPT-4 and most other popular large language models used today. It effectively identifies most AI content types, though it occasionally misclassified mixed content as human-produced. Like most other AI content detectors on this list, Copyleaks use deep learning to review and identify content written by a human, including factors such as structure, natural phrasing, terminology, and word order. Copyleaks is ideal for individuals and businesses alike, but is the preferred choice for many small businesses and institutions, especially those engaged in academic or legal content review, where authenticity is crucially important.

Although not quite as high on the list as some other tools, having other AI features like a plagiarism checker, Copyleaks stands as a solid option and is still one of the best AI content detectors out there.

AI Detection Accuracy:

• Human: Estimated as 100% human-generated.

• ChatGPT: Displays 100% indications of AI creation.

• Claude: Perceived as 100% AI-generated.

• Mixed Content: Detected as 100% human (almost 0% accuracy).

How to Use:

Users can appreciate the easy-to-navigate interface, where they can upload write text, paste content, or import documents for review. Choose the type of scan you need—such as AI content detection with a plagiarism check. Then you can simply check the highlights as the AI-generated content Copyleaks has detected.

Additional Features:

• Plagiarism Checker: Verifies the uniqueness of the text.
• Readability Score: Evaluates the clarity and comprehensibility of text.
• OCR Capabilities for images
• Extensive Browser Extension Support: Available for Microsoft Edge and Google Chrome.
• Customizable GPT Configurations: Allows users to fine-tune the AI detection settings.

Copyleaks AI Pricing:

Copyleaks offers free trial with up to 5 credits(1,250 words). You can subscribe to the comprehensive plan for $13.99/month, which includes both AI detection and plagiarism detection features. Each feature can also be subscribed to individually, with the AI detector plan priced at $7.99/month and the plagiarism detector plan at $8.99/month.

When You Need More than AI Detection Software

As we have seen, AI detection websites have flourished in the past couple of years and are now available to detect AI in virtually any kind of text. But when you are composing a paper for class, a research manuscript for publication in a top journal, or an application essay to a top college or university, you will need more than an AI tool to maximize the potential of your writing.

In addition to top-performing AI writing and editing tools, Wordvice offers professional proofreading services by human editing experts with master’s degrees and PhDs and expertise in the subject area of your paper. Wordvice’s services include academic editing before submission to journals, admissions editing to polish your personal essay of resume/CV, and business editing services for professional documents such as reports and brochures. Find the right human editor for the needs of your document, whether AI- or human-generated.