1.47% / 3.45%
hallucination / omission rate
What the research found
A validated evaluation of an ambient AI scribe across 12,999 clinician-annotated sentences found a 1.47% hallucination rate (fabricated content) and a 3.45% omission rate (missing critical information). Even low rates mean errors in thousands of notes at health-system scale.
Why it matters for providers
Ambient scribes are the fastest-spreading clinical AI, so this is the most load-bearing everyday risk — quiet fabrication and omission entering the record.
Original source
Frontiers in AI / npj Digital Medicine
Peer-reviewed or official source — the most reliable tier.