Uncheck AI (UndetectableAI)

Uncheck AI is one of the better-known entries in the "undetectable AI" category, a class of tools built for people who want machine-drafted text to survive AI-content screening. The site now lives at uncheck.ai, while the older undetectableai.ai address forwards there, so users searching under the original name still land on the product.

The workflow is deliberately simple: paste text, run the checker to see how AI-flavoured it looks, then hit the humanizer to produce a rewritten version. Output modes range from quick to more thorough rewriting, and the service pitches itself as error-free, plagiarism-free and faithful to the original meaning. It also advertises a watermark-removal routine aimed at ChatGPT-generated phrasing.

Pricing follows a freemium structure. A free tier covers a small monthly word allowance with short per-run limits, followed by Basic, Pro and Unlimited plans that raise both the monthly quota and the maximum length of a single job. Because the marketing leans heavily on bypass claims, users should treat detection scores as probability signals rather than proof of authorship.