A reading, not a ruling.
Nota tells you how machine-like a submission reads — with the error rate printed beside the score. What happens next stays a conversation between you and your student, not a verdict from a tool.
The number arrives with its error rate
Every result carries the false-positive rate measured for the exact model that scored it — how often it flags honest human writing. You know how much to trust the number before you knock on anyone’s door.
It refuses to guess
Under 250 words Nota abstains and says why. Short answers, discussion posts and one-paragraph replies get honesty instead of a confident-looking guess.
Fair to careful writers, by design
Formal, careful prose — including from non-native writers — can read machine-like. We have not published a false-positive rate for non-native writing yet, so we do not sell one, and we say that out loud. A score is a reason to look closer, never an accusation.
What you get to work with.
Batch a class set
Drop up to 100 files at once (paid plans). Per-document results: words, probability, band, error rate.
The Nota Record
Download an Ed25519-signed record of any result — the score, the model version, the caveats — that cannot be quietly edited. Useful when a case goes to a committee.
Evidence to read together
Twelve writing measurements against a human envelope, each with its failure mode. Made for looking at with the student, not for pointing at them.
Discarded by default
Student text is processed in memory and discarded. History keeps each scan’s signed record — the hash and the numbers; the text only where you chose to keep it in the record. Nothing is used for training.
On every result, whatever the plan: probability, band, threshold, measured false-positive rate, model version, word count, caveat. Never “written by AI”.
Nota Educators
We are inviting 25 educators this season to shape how an honest detector should behave in a classroom. Not a webinar funnel — a working relationship.
Apply for the cohort →Tell us what and where you teach, and how AI writing shows up in your classroom today.
You get
- A year of the Professional plan, free — batch, Nota Records, API
- The Nota merch box: tee, the 20-emotion sticker sheet, enamel pin
- A direct line to the team and first access to new features
- A classroom one-pager: how to read detector results fairly, written in plain language
You give
- Pilot Nota in one course for a term
- A short feedback call once a month
- An honest quote or case study — only if the tool earns it
Fair questions
The longer answers live on the method page.
Run a class set through it.
Paste one essay free right now — or write us about the founding cohort.