There is an increasing number of texts, which were created by artificial intelligence, being published on the internet. Ahrefs conducted an analysis of 900,000 web pages launched in April 2025, discovering a remarkable proportion of 74.2 percent of the sites with AI-generated content. Such figure has encouraged representatives of the media, educators, publishers, and other professionals to make use of machine-generated texts. There exist a number of tools for detecting texts created by AI, which differ in effectiveness, especially in detecting the edited texts. Below are the best systems for the detection of AI-generated texts this year.

1. Quetext: Best Overall for Combined AI and Plagiarism Detection

The AI detection feature from Quetext is backed by DeepSearch™ plagiarism detection software, enabling students, writers and educators to run a single test which reveals plagiarism and whether the text was written by an AI program. The outputs indicate not just the overall percentage of plagiarism in a text, but exactly which passages were flagged for plagiarism, making it easier to interpret for learners or clients who may express skepticism about the results.

Ideal for:

• Students submitting their own work after verifying its integrity

• Teachers assessing academic assignments in terms of AI presence and plagiarism

• Copywriters obtaining confirmation of originality of their manuscripts

Main characteristics:

● DeepSearch™ AI detection and plagiarism detection in one go

● Input analyzers and feedback generators

● AITutorMe paraphrasing tool

● AI text summation and humanization tools

● Grammar and spelling checkup feature

● Uploading files in bulk –upto 100 files, API access

Pricing:

● Free: $0/month (up to 1,000 words per scan)

● Essential: from $14.99/month (100,000 words/month), built for individuals

● Professional: from $29.98/month (200,000 words/month), built for teams and schools

● AI Detector Only: from $7.99/month (50,000 words/month)

2. Copyleaks: Best for Enterprise-Scale Scanning

Founded in 2015 and based in New York, Copyleaks is built for organizations processing large volumes of content across multiple languages and formats. Its engine covers more than 30 languages and extends into source-code analysis, a common need for technical teams as well as publishers. The platform runs largely through APIs and learning-management-system integrations, so companies can wire detection directly into a CMS or moderation pipeline instead of checking documents one at a time. That scale comes with a tradeoff: reporting tends to be built for automated systems rather than a plain-language explanation a reviewer can act on quickly.

3. Turnitin: Best for Academic Integrity

Turnitin, founded in 1996 and headquartered in Oakland, California, has been the standard plagiarism-checking tool in higher education for decades and has layered AI-writing detection on top of that existing infrastructure. Because most universities already use Turnitin for originality checks, instructors can review AI-related signals in the same report as plagiarism findings without adopting a new system. The tradeoff is access: Turnitin sells primarily through institutional licenses, making it a poor fit for independent writers, agencies or newsrooms outside of education.

4. GPTZero: Useful for Classrooms, Less Suited to High-Stakes Review

Established in 2023 in New York, GPTZero has earned its popularity in the education sector as it evaluates a text through perplexity and burstiness parameters and presents the flagged sentences. The tool’s counterpart Origin allows users to save the steps of their writing so as to keep record of their work and authorship beforehand. The effectiveness of the tool is proven to change depending on the degree of editing or the use of mixed texts, so it has to be considered as the first round of testing rather than the ultimate solution.

5. Originality.ai: Built for SEO Teams, Narrower Feature Set

Founded in 2022 and based in Collingwood, Canada, Originality.ai markets itself squarely at SEO agencies and content marketplaces, offering bulk scanning and a browser extension built around checking large volumes of web copy quickly. It covers AI detection and plagiarism in one scan, but the platform is narrower than some competitors: it skips the grammar, summarization and paraphrasing tools bundled into more complete verification suites, and its scoring has drawn criticism for inconsistent results on content that’s been through multiple rounds of human editing.

No detector is infallible, and each works best as one signal among several rather than a final verdict. For teams that need to defend a finding to a client, a partner or an academic reviewer, tools that pair AI detection with plagiarism checking and clear, passage-level reporting, such as Quetext, tend to hold up best under scrutiny.

Learn more about how the Quetext AI Detector works and try a free scan at quetext.com.

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Company Name: Quetext
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Country: United States
Website: https://www.quetext.com