GrubbyAI is a text-rewriting service operated by Study Solutions A16 LLC. It offers an English-language tool that rewrites AI-generated text to make it sound more natural, alongside features intended to reduce detection by AI-checking systems. The company markets the service to students, online content creators, bloggers, SEO marketers, and advertisers, and says its tool can help users address false AI-detection flags and produce original-sounding content.

It names services such as GPTZero, Originality. ai, ZeroGPT, Turnitin, Winston AI, Content at Scale, and Copyleaks among the detectors it targets. GrubbyAI provides new users with a limited number of free words, with paid subscriptions available for additional usage and features.

The website also offers information through a blog and provides company, contact, privacy, terms, and cookie-setting pages. GrubbyAI describes its tool as a way to humanize AI writing, but its performance claims, including detector and plagiarism-check results, are the company’s own marketing statements. The service supports English text only