---
title: "AI scribe accuracy benchmark, United Kingdom — Hanah"
description: "Hanah's AI scribe accuracy benchmark for the UK: 5.9% Word Error Rate over 10 recordings graded 29 June 2026, against 106 pre-registered clinical facts."
source: https://hanah.health/uk/trust/transparency/
---

Validation transparency

# AI scribe accuracy benchmark — United Kingdom

The [methodology](https://hanah.health/uk/trust/wer-methodology/) behind these results, including how each number was measured and its limitations, is in the methodology document.

Against six other AI scribes on the same recordings, Hanah's notes captured 11% more of the required clinical details than the average (93.7% against 84.2%), with no major hallucination flags against an average of 0.96 per note, and Hanah's transcripts had 66% fewer clinically significant errors. [See the comparison](https://hanah.health/benchmark/).

## Headline metrics

## Coverage breakdown

## Jury composition

Each detail is graded by every juror configured in the panel. Verdicts disagree on hard cases — that's the signal. Per-juror reasoning is shown verbatim below.

## Sessions

Click any recording to drill in: source audio, ground-truth transcript, what the STT pipeline heard, every generated document, and every per-LLM verdict with its reasoning.

## Methodology & provenance

Methodology

Word Error Rate, panel-of-LLM jury, prompt-scoped expectations, calibration sanity-check, and corpus graduation roadmap (synthetic → role-play → real-world).

[Read the methodology document →](https://hanah.health/uk/trust/wer-methodology/index.html)

Source data

The full machine-readable artefact this page renders from. Every number on this page is computable directly from this file.

[Open raw data →](https://hanah.health/uk/trust/transparency/data.js)

Reproducibility

Corpus, juror prompts, and judge model versions are all version-controlled. Anyone can re-run the harness against the same commit and reproduce these numbers.

[Trust Center home →](https://hanah.health/uk/trust/index.html)