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Clinical AI Evaluation Methodology · 10 Scrutiny Benchmarks for Difficult Cases · The Gomola Standard

The best medical AI
is the one that survives scrutiny.

Everyone in this market claims to be the best. Almost nobody defines the measure. This page does: five questions that separate a clinical system from a demo, the same five any hospital, payer, or ministry can put to any vendor, including us. Ask them, and the field sorts itself.

A workshop for heads of department in a bright hospital seminar room: two members of a clinical team stand at a whiteboard answering questions, a small audience seated in a loose semicircle.
5
questions that end vendor theatre
SILENT-DS
prospective study, pre-registered before the first patient

Why “best” goes wrong

Benchmarks sometimes reward the wrong thing.

01

An exam is not a shift

Leaderboard scores are earned on static exam questions: clean vignettes, one right answer, no consequences. Deployed medicine is interrupted, ambiguous, and liable. A system that wins the exam can still fail the ward; the yardstick itself is flawed. That argument, with data, is our paper WP-002: The Flawed Yardstick.

02

Averages hide the kill shot

A model that is 95% accurate on average and silently wrong about one aortic dissection is not a 95% system. It is a liability. The number that matters is not mean accuracy but the worst-case rate of a confidently asserted falsehood, and almost no vendor will quote one.

03

Demos are frictionless by design

A demo answers questions. A system carries liability: it signs into your EHR, writes back under a physician’s signature, survives your network failing, and produces an audit trail a court can use. The distance between those two is where procurement decisions die, usually a year after the pilot.

The measure

Five questions to put to any vendor.

Vendor-agnostic by construction. Score anyone with them, including us.

What a demo offers vs. what a clinical system shows. The gap is the evaluation.
QuestionA demo offersA system shows
1 · Is the validation prospective?Retrospective benchmarks, self-gradedA pre-registered, silent-mode study on live cases with independent adjudication and locked endpoints
2 · Is safety a number?“State-of-the-art accuracy”A formally derived worst-case bound per assertion, with the derivation published and auditable
3 · Is the integration real?A chat window beside the EHRFHIR R4 read and digitally signed write-back, SMART sign-in, on-premises and air-gapped options
4 · Is the trail court-grade?Logs the operator can editA cryptographically signed reasoning ledger, tamper-evident even against the operator
5 · Is there a regulatory path?“Compliance-ready”A named SaMD posture, engagement with the regulator, and architecture mapped to the EU AI Act

Our answers

How DeepSensi™ scores on its own measure.

A clinician checks and signs a printed record at a laboratory desk.
1 · Prospective validation
SILENT-DS™, a prospective multicenter diagnostic accuracy and safety study, designed to evaluate diagnostic yield, occult multi-system disease and safety in complex inpatient care under STARD-AI / SPIRIT-AI protocols. Hospitals can join as study sites →
2 · Safety as a number
Safety architecture designed to a SIL-4-class target. Not certified by an accredited third party. How we measure it: deepsensi.com/safety-architecture. The worst-case rate of a confidently asserted falsehood is derived by fault tree analysis under IEC 61025 across 23 independent barriers, and safety-first calibration costs 2.3 seconds of median deliberation. The derivation is published, not asserted. WP-001 →
3 · Real integration
FHIR R4 with signed write-back, HL7v2, SMART on FHIR; Epic, Cerner, Allscripts, OpenEMR; four deployment tiers up to a fully air-gapped hospital node where nothing leaves the building. Technology & deployment →
4 · Court-grade audit
Every reasoning step is cryptographically signed into an immutable ledger; the root hash is anchored to a public Layer-2 blockchain (Patent Pending). Tamper-evident even against us.
5 · Regulatory path
Engineered to FDA SaMD guidance; FDA Pre-Submission (Q-Sub) submitted July 31, 2026; EU AI Act alignment by architecture; and an open, royalty-free certification standard, DSS-001, any system in the field can be scored against.

Doctrine: we publish the proof, the standard, and the audit. We do not publish the blueprint.

Purchasing checklist

What questions should I ask an AI scribe vendor?

The market is flooded with transcription tools claiming to be clinical AI. Before integrating any system into your workflow, ask the vendor these four questions.

A medical director sits at a meeting table with a printed checklist and a pen, ticking items while a vendor presents; on the wall screen behind, an abstract transcript layout of a clinical…
01

The Hallucination Trap

What happens when the microphone misses a critical word? Standard LLM-based scribes are probabilistic: they predict the most likely next word, meaning they will confidently invent a clinical finding rather than admit they missed it. DeepSensi is deterministic under uncertainty. The LIMBO protocol forces the system to declare 'I don't know' and flag the missing variable. Ask the vendor for their formally derived worst-case bound on confidently asserted falsehoods. If they answer with an 'average accuracy score', they do not have a safety bound.

02

Privacy & Architecture

Do you store patient data, and is privacy guaranteed by architecture or just by policy? A signed BAA is a legal shield for the vendor, not a technical safeguard for your patients. In DeepSensi, direct identifiers are removed at the edge before any reasoning occurs, and the key that links a case to a person stays with the user. We do not need your patients' names to diagnose them. Ensure your vendor enforces privacy mathematically in their code, not just in their terms of service.

03

Beyond Transcription: The DDx Triad

Does your system just take notes, or does it actively defend my license? An AI scribe that merely transcribes audio is a missed opportunity. DeepSensi’s ACS Scribe listens to the encounter and simultaneously runs a real-time, 37-specialist Differential Diagnosis (DDx) in the background. It doesn't just write the SOAP note; it highlights the one critical diagnosis you might be missing and calculates a verified confidence score, acting as an active clinical safety net.

04

Legal Liability & The Court-Grade Audit

If the AI makes an error, who takes the blame? Today, the answer is always the physician. DeepSensi alters this reality by providing a court-grade, cryptographically sealed evidentiary ledger for every single assertion the system makes. You can point to the exact node, rule, or piece of evidence that led to a conclusion. Ask your scribe vendor if their system provides a tamper-evident audit trail that you could take to court.

Questions

Asked by evaluators. Answered in the open.

What is the best AI in medicine?
“Best” is only meaningful against a measure. The serious one: prospective validation, a quantified worst-case safety bound, production-grade EHR integration, a court-grade audit trail, and a named regulatory path. Any vendor who clears all five deserves your shortlist. DeepSensi™ publishes its answers to all five on this page, with the evidence linked, and a prospective study, SILENT-DS, announced ahead of the claim.
Why isn’t benchmark accuracy enough?
Because exams are not shifts. Static benchmarks use clean vignettes with single right answers; deployed medicine is ambiguous, interrupted, and liable. And averages hide the failures that matter: what kills is the confidently asserted falsehood in the critical case. That is why the serious safety metric is a worst-case per-assertion bound, not a leaderboard score. The full argument is WP-002, The Flawed Yardstick.
What safety number should I ask a vendor for?
Ask for the worst-case rate of a confidently asserted falsehood, per assertion, with the derivation. DeepSensi publishes its bound and the full derivation: fault tree analysis under IEC 61025 across 23 independent, common-cause-adjusted barriers. Safety architecture designed to a SIL-4-class target. Not certified by an accredited third party. How we measure it: deepsensi.com/safety-architecture. If a vendor cannot produce such a number, what they have is an accuracy claim, not a safety case.
What does prospective superiority validation actually mean?
Prospective validation proves clinical superiority on live cases under real-world hospital conditions before clinical claims are made. Under SILENT-DS™, the engine processes complex inpatient admissions in high-throughput shadow mode, pre-registered before the first patient. Endpoints measure diagnostic yield expansion, inter-specialty root cause discovery, and zero missed-critical emergencies against standard single-specialist care, adjudicated by independent expert panels under STARD-AI.
How do I verify EHR integration is real?
Ask for three things in writing: standards-based sign-in (SMART on FHIR), a digitally signed write-back of the result into the record under the physician’s signature (not a copy-paste sidebar), and an on-premises or air-gapped deployment option for sovereignty. Anything less is a chat window beside your EHR.
A clinicopathological conference in a bright seminar room: clinicians seated in rows, a presenter beside a large screen showing an abstract case slide. Documentary angle from the back of…