AI OSCE Simulator: Practise Stations with a Real Voice

An AI OSCE simulator plays the patient in a clinical exam station. You take the history by voice or text, it answers in character, and your performance is marked against a rubric when the case ends. That’s the core loop.

You usually need a second person for station practice: to role-play, to keep time, to push back a bit. Organising that, every week, is hard. I’m not sure anyone enjoys this part.

With Diagnosica, you practise on an AI patient by voice or text. The case is marked when it ends, with feedback against exam-style rubrics.

You can try a no-signup demo on the homepage: talk or type for about 3 minutes, and it’ll mark you when the case ends. no-signup demo

There are 50+ cases across roughly 16 specialties and three difficulty bands: Foundation, Intermediate, Advanced. Available any hour, no booking, no partner needed. Transcript export, plus leaderboards by specialty and country.

The free tier gives you one free case a week. Paid tiers add unlimited cases and full rubric scoring, but billing isn’t switched on yet, so every account starts free.

Rubrics are being calibrated to the published mark sheets of PACES, MRCEM, SCA, USMLE Step 3, PLAB 2, MCCQE, RACGP AKT, and NEET PG.

It does not cover physical examination practice. Stay with real patients and tutors for that.

This guide shows a session in practice, what gets scored, and where these tools stop.

Run a full OSCE case Sign up free, pick a case, one free case each week, marked at the end. Start practising now

What a session actually looks like

You open a chest pain station and meet Trevor Walsh, 58, a fictional AI patient from Diagnosica’s case library. He starts with: "Honestly doctor, I think it's just indigestion, but my wife made me come in, there's this crushing weight on my chest." Triage vitals are visible: HR 102, BP 148/92, SpO2 95%, RR 22.

You can speak or type. He answers in character, fluent and consistent. Volunteered facts come readily, but specifics only surface if you ask a targeted question. That’s the point: your questioning makes or breaks the data you collect, because the case will only unfold at the pace and depth set by how you drive it.

You set the agenda, ask for the story, then move into focused history. Open to focused, general to specific, with clear signposting so he’ll follow your lead without an examiner acting as a guardrail.

You’ll explore symptoms, timing, context, impact on function, relevant background, and safety questions. If you don’t ask, he won’t tell. Not ideal. But fair.

Before closing, you cover ICE. The first time, most people forget because there’s no examiner nudging them. I’m not sure anyone enjoys this part, but it’s where you catch unspoken worries and expectations.

You summarise back to check understanding, then close the station as you would in an exam. No physical examination here, and you won’t be asked to perform one. That’s a known limit.

When you end the case it’s marked and you see what you covered and what you missed. You’ll see which cues you picked up and which domains you left untouched, so you can plan the next practise run.

You can repeat Trevor’s case later and push for the elements you missed, or switch to a different presentation when you want a change of gear. Every time.

What it marks, and what it can't

Diagnosica marks your case when it ends. It scores your history coverage, how you structured the conversation, and which red flags you did or didn’t pursue with the AI patient, then gives feedback against exam-style rubrics. I’m not sure anyone enjoys this part, but it helps.

Rubrics are being calibrated to the published mark sheet for PACES, MRCEM, SCA, USMLE Step 3, PLAB 2, MCCQE, RACGP AKT and NEET PG. That’s calibration, not endorsement, and it’s aimed at aligning your habits to what examiners actually look for.

You’ll see whether you gathered enough information, kept a clear structure, and recognised or missed key risk points. The transcript export makes it easy to review how you asked and in what order, which is often where small marks leak away.

Here’s the honest half. It does not cover physical examination practice. A voice product can’t check your palpation or watch your hand positions, and it won’t replace a tutor observing your technique or your bedside manner in a real bay.

Treat every output as educational. Use it to shape your next attempt, not as a directive or a guarantee of how you’ll perform with a live patient or in a clinical exam. Stay with real patients and tutors for that.

If you want to see how the marking feels, try the no-signup demo, which runs for about 3 minutes and is marked when the case ends: no account, talk or type, then see the rubric snapshot.

Run a full OSCE case Sign up free, pick a case, one free case each week, marked at the end. Start practising now

Why voice matters more than typing

OSCEs are spoken exams, so the skill you need is fluent, concise talking under pressure. You can type a tidy plan, but only your voice shows whether your questions land cleanly, stay in order, and move fast enough to finish.

Voice practice exposes things typing hides: filler words when you’re buying time, a question order that falls apart mid-stream, the beat of silence after an unexpected answer. I’m not sure anyone enjoys this part, but hearing it changes what you do next.

It also trains the micro-skills you’re marked on: short, single questions, reflecting back answers, and recovering when something unexpected lands. In real speech you can't batch-think; you have to commit to the next line and own the pause as you go in real time.

Even so, you're speaking to an AI patient, not to someone standing in front of you. It won’t cover physical examination, so treat it as rehearsal for the talking parts of stations.

There is a fair counterpoint. Typing is quieter for the library or commute, and it still trains structure. Use voice when you can, and text when you can’t, especially if you need to practise stations without a partner. It’s still practice that moves the needle (you already know this).

AI patient vs study partner vs paid role-play

For OSCE prep you have three common options: an AI patient, a study partner, and a paid role-play course. Diagnosica’s AI patient will not replace physical examination practice, but you can practise by voice or text any hour, and every case is marked against exam-style rubrics.

AI patient Available any hour with no booking, by voice or text. Free tier gives 1 case a week; paid tiers add unlimited cases and full rubric scoring, though billing is not yet switched on. Every case is marked against exam-style rubrics being calibrated to published mark sheets, and conversations feel realistic but there is no physical examination practice.

Study partner Dependent on both schedules and cancellations happen; I am not sure anyone enjoys the diary chase. Usually free. Marking is inconsistent as peers rarely mark to a sheet, and conversation is good but acting is limited with no real patient cues.

Paid role-play course Fixed dates and times with limited slots. Highest cost. Marking is variable, often facilitator comments rather than exam-style scoring, but realism is highest with trained actors.

These are not competitors, they are a stack: use the AI patient for volume, then add humans for polish. If you want a quick feel, try the live demo, talk or type for about 3 minutes, and it is marked when the case ends.

Common questions

Is there a free AI OSCE simulator?

Yes. Diagnosica has a no-signup homepage demo that runs for about 3 minutes, so you can see how a scored conversation with an AI patient feels. If you create a free account, you’ll get one free case each week. That’s enough to keep your history-taking and communication ticking over between placements, and it’s always marked against exam-style rubrics. For more no cost options, see a roundup of genuinely free virtual patient simulators to practise clinical scenarios without subscriptions or hidden fees.

Does it work for PLAB 2 or PACES?

Yes. For PLAB 2 and PACES, the scoring is calibrated to the published mark sheets of those exams, so your feedback matches what examiners are actually looking for. Practice is history-and-communication focused, which is where many candidates drop marks. You’re rehearsing the conversation, the structure, and the explanation pieces that live on those mark sheets. Work through common presentations one at a time, like the jaundice and shortness of breath stations.

Can it examine me on clinical skills like auscultation?

No. It can’t examine you on physical skills like auscultation. Not ideal. Physical examination stays with real patients and tutors. What you can rehearse here is the talk: focused history, how you’d explain what you’re examining, and how you’d share findings. I won’t pretend it replaces bedside learning, but it does let you refine the words and sequencing you’ll use at the bedside.

Do I talk to it or type?

Both. You can speak to the AI patient for realism, or type when you can’t speak out loud. Voice practice makes you commit to phrasing and timing, which tends to surface weak spots before an OSCE. Text is handy for library sessions or quick reps on the train. I’m not sure it suits every study session, but voice gets you closer to the feel of a viva.

The same conversations turn up on the wards, especially on your first nights on call. See how it feels, then use the weekly free case to keep your consultation skills warm between clinics. Read this next: your first nights on call. If you’re assembling a study kit, we also sorted the best AI tools for medical students by the job each does.

Run a full OSCE case Sign up free, pick a case, one free case each week, marked at the end. Start practising now

Educational use only: not medical advice. AI generated; verify clinically against primary sources. Clinical review pending.