As language models like GPT get better and better, it's getting harder to tell the difference between text written by AI and text written by humans. However, in some areas, like academics, it's really important to make sure that the text wasn't written by AI.

That's where AI detectors step in. While no tool can detect AI-written text with 100% certainty (and they don't claim to), some of them are quite accurate. So, we've put together a list of the 17 most accurate AI content detectors for you to check out.

Top AI Detection Tools Reviewed

With the advent of AI in content creation, the need for reliable AI detectors has never been greater. In 2024, the world of AI text detectors has expanded, offering a variety of solutions tailored to meet the needs of discerning businesses and content creators. These AI writing detectors not only ensure the originality of content but also empower users to maintain the integrity of their digital presence. Here's a deep dive into the capabilities and value propositions of the top 16 AI detector tools that are shaping the future of content authenticity.

1. Undetectable.ai

Description:
Undetectable.ai is a sophisticated AI dectator tool designed to determine the likelihood of content being AI-generated. It goes beyond the typical binary response of "AI or human?" by analyzing the text's structure, syntax, and stylistic elements to quantify the probability of AI involvement.

Accuracy:
While Undetectable.ai does not provide a guaranteed accuracy rate, it claims to be the most advanced and accurate AI detection tool on the market, with third-party tests estimating 85-95% detection rates.

Best Suited For:
Ideal for writers, bloggers, researchers, and content creators who aim to identify AI-generated content.

Best Features:

• Dual AI detection and humanization capabilities.

• Analyzes up to 10,000 characters per analysis.

• Intuitive user experience.

• Identifies the latest AI models like GPT-3 and GPT-4.

Limitations:

• Pricing may raise affordability concerns for some users.

• The interface visuals are considered dated.

Pricing:

• Freemium version with limited features.

• Personal plans start at $5/month for analyzing up to 10,000 words.

• Enterprise-level options available with tailored business pricing.

2. Winston AI

Description:
Winston AI is a cloud-based AI writing detector tool that uses machine learning to identify AI-generated content. It's designed for businesses to detect AI-generated content in various forms of corporate communication.

Accuracy:
Winston AI boasts up to 99.6% accuracy in detecting AI-generated text, although some reports suggest an accuracy of 84%.

Best Suited For:
A good choice for writers, educators, and web publishers who need to detect AI-generated text in their content. It's also suitable for students checking for plagiarism.

Best Features:

• High accuracy with the ability to detect most AI content, including all GPT-4 texts.

• Features OCR technology and can process handwritten documents.

• User-friendly interface with sentence-by-sentence assessment.

• Supports multiple languages.

Limitations:

• The service can be costly, and the free tier has limitations.

• Requires sign-up to use.

Pricing:

• Free basic plan for limited features.

• Paid plans start at $12/month (annual plan) and $18/month (monthly plan).

• Elite plan for extensive use at $49/month.

3. Originality.AI

Description:
Originality.AI combines AI detection and plagiarism checking in one cloud-based tool. It uses advanced machine learning to spot text created by leading AI like ChatGPT and Bard while also scanning for unoriginal content.

Accuracy:
Claims to detect AI-generated text with over 95% accuracy, making it one of the most accurate tools available.

Best Suited For:
Ideal for teams and marketing/SEO agencies needing AI-free content, as well as any user seeking to validate content authenticity.

Best Features:

• Two-in-one AI and plagiarism detection.

• Customizable sharing of detailed reports.

• Team workflow features like multi-user access.

• Readability scoring for further content optimization.

Limitations:

• Restricted capabilities on pay-per-use pricing.

• Some users are concerned about detection accuracy and reliability.

Pricing:

• Pay-as-you-go pricing starts at $30 for 3000 credits (each credit scans 100 words).

• Monthly plans begin at $14.95 for 2000 monthly credits.

4. GLTR (Giant Language model Test Room)

Description:
GLTR, developed by MIT-IBM Watson AI Lab and HarvardNLP, is an open-source AI detector tool designed to conduct forensic analysis of texts to determine if they were created by AI. It's based on GPT-2 technology and analyzes words in the context of their surrounding text to estimate AI-generated probability.

Accuracy:
GLTR's accuracy is not as high as some other tools, with a reported ability to detect AI-generated text with over 72% accuracy, according to Harvard research. It's a good option for those seeking a free tool.

Best Suited For:
Ideal for researchers and developers, GLTR provides an open framework of linguistic analysis tools, datasets, and benchmarks to drive innovation in AI detection algorithms.

Best Features:

• In-depth linguistic analysis for detailed insights.

• Color-coded highlighting for easy understanding of AI-generated probabilities.

• Evaluates word placement as an indicator of AI generation.

• Free to use.

Limitations:

• May not be updated to detect newer AI content, being developed in 2019.

• Complex outputs can be challenging for first-time users.

Pricing:

• Free to use.

5. Sapling

Description:
Sapling is a free AI detector tool designed for individuals to check their writing for AI-generated content. While not as accurate as some other tools, it's recognized for its user-friendly interface and is a good option for those looking for a free AI detector.

Accuracy:
Sapling is reported to be the most accurate free tool, with an overall precision of 68%, according to testing by Scribbr. It's noted for its improved accuracy after analyzing more than 50 words of text.

Best Suited For:
A suitable choice for Startups, SMEs, Enterprises, and individuals looking for a no-cost AI detection solution.

Best Features:

• User-friendly and free to use without sign-up.

• Advanced deep learning algorithms for reliable detection.

• Best-in-class for catching AI text within human-AI mixes.

Limitations:

• Lower accuracy compared to some paid tools.

• May not be as effective for extensive or complex texts.

Pricing:

• Free to use.

6. Content at Scale

Description:
Content at Scale is a cloud-based AI detector tool used by businesses to identify AI-generated content in various forms of communication. It offers straightforward, no-frills text analysis to determine if content is created by humans, AI, or a mix of both.

Accuracy:
While Content at Scale claims a 98% AI detection accuracy rate, third-party tests by ZDnet achieved only 66% accuracy, indicating a gap between marketed and actual performance.

Best Suited For:
A good choice for businesses and organizations needing to detect AI-generated text in their content, as well as writers checking for plagiarism or aiming to write undetectable content.

Best Features:

• Simple and straightforward result reporting.

• Ability to rewrite identified AI text to appear human-written.

• Granular sentence-level analysis for detailed insights.

Limitations:

• Inconsistent quality in AI text rewriting.

• Ambiguous accuracy rates and detection limitations.

Pricing:

• Free tier available for basic functionality.

• Paid tier priced at $49 per month for more extensive features.

7. Copyleaks

Description:
Copyleaks is an AI content detector that offers sentence-level analysis and covers a wide range of models, including Bard and GPT-4. It's known for its reliability and is particularly useful for enterprises.

Accuracy:
Copyleaks boasts a self-reported 99.1% accuracy rate with a 0.2% false positive rate across AI-generated content, making it one of the most reliable tools in the market.

Best Suited For:
Ideal for multinational enterprises and programming or software development teams due to its ability to analyze source code and support for 30 languages.

Best Features:

• Sentence-level analysis.

• Full model coverage.

• High accuracy rate.

• Supports multiple languages.

Limitations:

• Results viewing can be slow.

• No option to exclude parts of the text.

Pricing:

• Starts at $9.16/month for 1,200 pages (each page up to 250 words).

8. Crossplag

Description:
Crossplag is a plagiarism detection tool with an AI content detector feature. It uses machine learning algorithms to distinguish between AI-generated and human-written text.

Accuracy:
Crossplag's AI detector is trained with over 1.5 billion parameters, but its accuracy is around 58%, which is lower than its advertised rate of 95% precision.

Best Suited For:
Suitable for students, academics, bloggers, and writers to detect plagiarism and ensure original content creation.

Best Features:

• Easy to use.

• High parameter training for accuracy.

• Quick analysis.

Limitations:

• Only supports English.

• Interface lacks graphics.

• Limited in handling large or complex texts.

Pricing:

• Free limited plan available.

• Paid plans start from $9.95 for 50 credits or 5,000 words.

9. GPTZero

Description:
GPTZero is an open-source AI detector tool designed for detecting AI-generated content, especially in educational settings. It uses a multi-step approach for accuracy.

Accuracy:
GPTZero has a relatively low accuracy score of 52%, which is due to its binary judgments.

Best Suited For:
Optimized for the education sector, it's ideal for evaluating student writing and edtech-generated text.

Best Features:

• Dashboard with deep analysis view.

• Color coding and quantifiable linguistic analysis.

• No signup required for use.

Limitations:

• Subpar accuracy levels.

• Lacks percentage scores.

• Only offers yes/no judgments.

Pricing:

• Free tier allows scanning 10,000 words monthly.

• Paid plans start at $10/month for up to 150,000 words.

10. Writer AI Content Detector

Description:
Writer is a straightforward AI detector tool designed for simplicity and functionality. It analyzes text to determine if it's AI-generated, offering a percentage likelihood of human vs. AI origin.

Accuracy:
Writer's accuracy is not as high as some other tools, with a 38% accuracy score reported by Scribbr. It's known to miss GPT-4 content and most paraphrases.

Best Suited For:
Ideal for writers and website owners who need a quick, simple solution for checking content and drafts.

Best Features:

• Simple to use with a direct URL analysis capability.

• Can analyze content through URLs.

• Offers a free grammar checker.

Limitations:

• Doesn't color-code AI- and human-generated sentences.

• No option to upload text files or images for analysis.

• Limited to extracts under 1,500 characters.

Pricing:

• Free to use.

11. ZeroGPT

Description:
ZeroGPT is an AI content detector that emphasizes convenience and simplicity. It supports multiple languages and offers real-time AI content detection through its API.

Accuracy:
While specific accuracy metrics aren't provided, ZeroGPT is appreciated for its user-friendly approach and multiple language support.

Best Suited For:
Suitable for educators and content teams worldwide, especially those looking for a tool that's easy to integrate into other apps and programs.

Best Features:

• ZeroGPT API for integration into other apps and programs.

• Supports multiple languages.

• No hidden costs or limits on text analysis.

Limitations:

• No option to attach files for analysis.

• The interface may appear outdated to some users.

Pricing:

• Free to use.

12. Hugging Face

Description:
Hugging Face is an AI community platform offering a quality AI content detector. It classifies content as real or fake and displays results in decimal points, catering to tech-savvy users.

Accuracy:
While specific accuracy details aren't provided, Hugging Face is known for its community-driven approach and open-source nature.

Best Suited For:
Best for tech-savvy users and those interested in community support and open-source tools.

Best Features:

• Excellent for tech-savvy users with a unique decimal point result display.

• Strong community support.

• Open-source and constantly evolving.

Limitations:

• May not be user-friendly for non-tech-savvy individuals.

• Results aren't as clear as with other AI content detectors.

Pricing:

• Free to use.

13. AI Detector Pro

Description:
AI Detector Pro is an AI text detector tool designed to identify AI-generated content by analyzing text for specific patterns and attributes indicative of AI authorship.

Accuracy:
While specific accuracy rates are not provided, AI Detector Pro claims to be one of the most advanced and accurate tools on the market, with third-party tests estimating detection rates between 85-95%.

Best Suited For:
Ideal for writers, bloggers, researchers, and content creators seeking to uncover AI-generated content.

Best Features:

• Analyzes structure, syntax, and stylistic elements.

• Supports up to 10,000 characters per analysis.

• Recognizes text from various AI models like GPT-3 and GPT-4.

Limitations:

• No guaranteed accuracy rate provided.

• Interface visuals might seem dated.

Pricing:

• Freemium version available.

• Personal plans start at $5/month for analyzing up to 10,000 words.

• Enterprise-level options with tailored business pricing.

14. Corrector App

Description:
Corrector App is primarily a grammar and spell checker that also includes features to detect AI-generated content.

Accuracy:
The accuracy of the AI detection feature is not explicitly mentioned, but it's known for its reliable grammar checking capabilities.

Best Suited For:
Suitable for writers and editors looking for a comprehensive tool to improve their writing quality and detect AI-generated content.

Best Features:

• Grammar and spell checking.

• AI content detection capabilities.

• User-friendly interface.

Limitations:

• AI detection accuracy is not clearly stated.

• Primarily focused on grammar checking rather than AI detection.

Pricing:

• Pricing details are not readily available and might vary based on the features included.

Worried about Google penalizing AI-generated content? Dive into Does AI Content Rank in Google? and Can Google Detect AI Content? to understand the risks and unlock the potential of AI for your business growth.

15. GPT 2 Output Detector

Description:
The GPT-2 Output Detector is designed to differentiate between human-written text and text generated by AI models like GPT-2.

Accuracy:
The tool's accuracy improves significantly after analyzing around 50 tokens, indicating better performance with longer texts.

Best Suited For:
Ideal for content moderators, journalists, and academic researchers looking to validate the authenticity of texts.

Best Features:

• Based on the Transformers implementation of RoBERTa.

• Predicts probabilities of text being generated by GPT-2.

• Enhanced accuracy with longer text inputs.

Limitations:

• Results may be less reliable for shorter texts.

• Specific accuracy metrics are not provided.

Pricing:

• Typically offered as an open-source tool, but specific deployment might have associated costs.

16. Kazan SEO

Description:
Kazan SEO AI Detector started as an SEO content optimizer and now includes tools to detect AI-generated content.

Accuracy:
In tests, Kazan SEO AI Detector's overall detection score was 43.94%, which is lower compared to some other tools like Originality.ai.

Best Suited For:
Good for individuals and businesses looking for a free and simple AI detection tool along with SEO optimization features.

Best Features:

• Fake vs. Real identification.

• Bulk detection for domains or URLs.

• Various SEO and keyword optimization tools.

Limitations:

• Lower accuracy compared to many other tools.

• The website and app can be buggy.

Pricing:

• Free and unlimited use with account registration and verification.

What is an AI Detection Tool?

AI Detection Tools are specialized software designed to differentiate between content created by humans and AI. As AI technology advances, producing text that mimics human writing, the need for accurate AI detectors has become crucial. These tools analyze texts and images for patterns and attributes indicative of AI authorship, such as repetitive phrasing, specific sentence lengths, or a lack of depth and creativity. They're essential in maintaining the authenticity and integrity of content across various platforms.

Interesting read: the content marketing and SEO landscapes. The AI writing detectors we've highlighted, including Copyleaks AI Content Detector, Originality.ai, AI Detector Pro, and GPT Zero, represent the pinnacle of AI detection technology. They provide businesses with the means to ensure the originality and integrity of their content, which is essential in a world where authenticity is the currency of trust.

The integration of AI detectors goes beyond simply identifying AI-generated text; it's about safeguarding the human element that connects brands with their audience. In content marketing, these tools are the silent guardians that protect a brand's voice from being lost in the noise of AI-generated material. They are the unseen heroes that maintain the credibility that SEO efforts rely on to rank genuinely engaging content.

In light of this, we extend an invitation to experience the transformative power of AI-powered content marketing with Speedybrand.io. Our platform embodies the convergence of advanced AI content creation and meticulous detection, ensuring that each piece of content not only reaches its target audience but does so with the authenticity that builds lasting relationships. We encourage you to explore how our services can elevate your content strategy and help you achieve a competitive edge in your industry.

Discover the difference that a professional, customer-focused approach can make. Dive into the world of Speedybrand.io, where AI-powered efficiency meets the human touch of creativity. Let's embark on this journey together, crafting content that resonates, ranks, and returns value to your business.

FAQs

1. Which is an AI detector for essays?

Grammarly, Turnitin, and ProWritingAid are popular AI-powered essay checkers that flag potential plagiarism and writing issues.

2. Which is the best AI detector?

The best choice depends on your needs: Grammarly for grammar and style, Turnitin for plagiarism, and Copyleaks for web content scanning.

3. Which is an OpenAI detector?

OpenAI's text-davinci-003 model can detect plagiarism, but it's not a standalone detector. It's integrated into tools like Jasper and Writesonic.