The living record of healthcare.

The living record of healthcare.

The living record of healthcare.

Connected clinical datasets curated to your specifications. Updated at scale.

Connected clinical datasets curated to your specifications. Updated at scale.

Travel
in time.

Travel
in time.

Travel
in time.

Press rewind.

Press rewind.

Audio, notes and documents. The story starts somewhere.

Plot twist.

Plot twist.

A lab result. A discharge summary. The picture changes.

To be continued.

To be continued.

Records connected across visits and cohort deliveries.

Your model could use some fieldwork.

Your model could use some fieldwork.

Your model could use some fieldwork.

Source datasets for your AI lab customers, with agreed cohorts, quality criteria and delivery cadence.

Let it
sweat.

Let it
sweat.

Let it
sweat.

Open the report. Find the encounter. Put the right thing in the right place. We’ll check the chart.

727 public tasks · 5 families · 315 Hard · 126 image · 189 private

Add the new lab results. Keep the history.

AGENT ACTIONS
fhir_read(DocumentReference): pending
fhir_search(Observation): pending
fhir_create(Observation) × 2: pending
Submit(): pending
DETERMINISTIC VERIFIER
codes & units: pending
values & dates: pending
patient link: pending
history preserved: pending
SCORE—

Scored on the final record state. Offline. No LLM judge.

Leaderboard

Leaderboard

Leaderboard

14 models on 99 private tasks. Three attempts per task. November 2026.

Claude Opus 5.5
95% CI 0.830–0.940
0.888
GPT-6 Astra
95% CI 0.813–0.918
0.868
GPT-6.1 Sol
95% CI 0.803–0.915
0.861
Kimi K3.1 Pro ¹
95% CI 0.772–0.897
0.837
GPT-6.1 Terra
95% CI 0.769–0.891
0.833

Our models

Our models

Our models

Small models. Unreasonably specific interests.

Likes paperwork. We checked.

Likes paperwork. We checked.

We sent a 4B model to the Gym. It developed a taste for healthcare admin.

0.16 → 0.86

0.16 → 0.86

CRS-4B · Qwen3.5-4B base → fine-tuned

99 private tasks · 3 attempts per task. Frontier models: 0.76–0.89.

All ears.

All ears.

System One for speech. Still backstage. You’ll hear more when it’s ready.

TBA

TBA

CRS-4B is fine-tuned only on public synthetic Gym episodes and evaluated on the private split.

Coming in v2

Coming in v2

Coming in v2

01

Source difficulty levels

CSV, HL7 v2, broken-table PDFs, superseded reports, non-standard units, ambiguous dates and same-name patients.

02

Difficulty bands

Difficulty bands for every task.

03

Clinical scores

Calculators implemented from the primary publications, including the correct refusal when inputs are missing.

04

Web EHR computer use

A synthetic web EHR with screenshots, coordinates, an accessibility tree and human approval steps, scored on the final FHIR state.

05

A larger public task set

Published as a versioned dataset.

What are you trying to teach it?

What are you trying to teach it?

What are you trying to teach it?

Tell us what data you need. We’ll shape the cohort, format and delivery around it.

Used only to respond to your inquiry. Do not include patient information.