Advacheck

Advacheck is a text-analysis platform that checks documents for both plagiarism and AI-generated content. It uses neural-network-based detection to flag text likely produced by tools such as ChatGPT, Gemini, or Llama, alongside traditional similarity checking against a database that the company says includes over 1.4 billion internet documents plus academic sources like Springer Nature, IEEE, and EBSCO. Beyond literal text matching, it also looks for paraphrasing by comparing the underlying meaning of passages rather than exact wording, and it can detect similarity between images, not just text. The tool serves students, researchers, publishers, and academic institutions checking papers for originality, as well as content writers, marketers, and SEO professionals verifying that copy is not duplicated or AI-generated. It supports analysis across more than 100 languages, making it usable outside English-language content. Advacheck is offered in three tiers, Basic, Expert, and Edu, aimed respectively at individuals, professionals, and educational institutions, and became a certified Moodle integration partner in October 2024, allowing schools to run its checks directly inside their learning management system. The company reports a false-positive rate under 0.5% for its AI detection, though as with all AI-text detectors, no accuracy figure guarantees correctness on every document, and detailed pricing is not published on the main site.