Know Nota

Know Nota is a web AI-text detector that returns plain-English results with the model's limits stated. It accepts pasted text or files, offers 2,000 free words a day, and adds web source matching, shareable reports and an API on paid plans.

Know Nota is a web-based AI text detector built around readable results. A user pastes writing or uploads a file, and the tool, called Nota, estimates whether the text looks AI-written. Instead of a bare percentage, it opens with a short answer such as "Moderate AI-likeness" and lets the reader expand the details, including the limits of the underlying model. The site is candid that detectors make mistakes, and it frames every result as a clue rather than proof of who wrote something. The workflow has three steps: paste or upload, run the check, then read the explanation. Text needs at least 10 words, though the site warns that results under 50 words are often wrong. Uploads can be PDF, DOCX, TXT, Markdown, CSV or RTF files up to 30 MB, with the caveat that PDFs need selectable text and scanned images must go through text extraction first. Sample texts (human, mixed and machine-like) let newcomers see how results read before using their own writing. A first check works without an account or card, and a free account allows 2,000 words a day. Paid tiers add the heavier tools. The Individual plan includes a beta feature that finds passages matching pages on the web, so a reader can open the sources and compare them with the text, plus downloadable and shareable AI-check reports. The Professional plan adds API access with Bearer keys and batch checks of up to 100 files. Separate pages cover writing history reports, which turn available document history into context for a conversation about authorship without claiming to prove it, along with guidance for students and educators. Compared with other AI detectors, Know Nota leans toward transparency and caution over verdict-style scoring. It suits students checking drafts, educators weighing a flagged submission, and writers who want to understand why a passage reads as machine-like. Teams that need automated or bulk screening can use the API tier, though the product is clearly positioned as an aid to judgment, not an arbiter.