Detect

Paste your text. The detector returns a verdict — human, AI, or manual review — with per-sentence rationale and a signed receipt. The model abstains when it isn't sure.

Detect AI-generated text

Paste up to 2,000 characters. We return a verdict, not just a score.

0 / 2,000

Per-sentence rationale

The rationale panel renders inline once a verdict returns. Each sentence is annotated with the calibrated contribution it made to the overall verdict and a confidence band. Spans the model could not score are marked abstain, not human and not AI.

Signed receipt

Every verdict produces a signed JSON receipt containing the text hash, model SHA, calibration-card reference, and timestamp. The receipt below corresponds to the most recent scan in this session.

Signed verdict receipt

{}

How the detector works

humaniser.eu does not score text on a single 0–100 axis. Each passage is tokenised, segmented, and evaluated against a calibrated classifier per language. The classifier emits a posterior probability, which is then mapped through a per-locale calibration curve — the same curves published on the calibration page — to produce a verdict: human, AI, or manual review.

The manual-review state is not a hedge. It is the model declining to make a call when the posterior sits inside the abstain band defined by the language's calibration card. Critics dispute whether detectors should ever abstain; we think the alternative — pretending to know — is what produced the false-accusation incidents that academic integrity offices are still cleaning up from 2023 onward.

Inputs accepted

  • Plain text, up to 2,000 characters per scan in the web UI.
  • 24 EU languages plus English. Auto-detection is on by default; override per scan if needed.
  • Citation-rich academic text is preferred input — the calibration set includes a 4,500-sample arXiv subset.

What the receipt contains

The signed receipt is a JSON object with a SHA-256 hash of the input text, the model SHA, the calibration-card reference, the verdict, the abstain-band boundaries used, and a timestamp. The receipt is signed with the humaniser.eu Ed25519 key whose public half is published at /.well-known/humaniser-receipts.pub. The format and verification steps are documented on the receipts page.