Diagnosica vs Quesmed OSCE-AI: which should you use?
Updated 20 October 2026
For UK finals and the UKMLA CPSA, Quesmed OSCE-AI is closer to the real exam: OSCE stations marked line by line against a station mark scheme, with a global rating from Fail to Excellent and no cap on attempts. Diagnosica covers a whole case instead of a station: you talk to a patient on video, order labs and real imaging, commit to a diagnosis and a plan, and get a competency scorecard, on a free tier you can keep using.
We make Diagnosica, so weigh this page with that in mind. Every Quesmed OSCE-AI fact here comes from its own site, read on 20 October 2026; if something has changed since, their site wins.
Diagnosica is an AI clinical simulator for medical students and junior doctors. You take a history from an AI patient on video, by voice or text, order labs and real imaging, commit to a diagnosis and management plan, and get a competency scorecard.
Quesmed OSCE-AI and Diagnosica side by side
| Quesmed OSCE-AI | Diagnosica | |
|---|---|---|
| Format | OSCE stations with an AI patient and an AI examiner | Full cases from history to management plan, plus 2-minute quick cases |
| The patient | Real-time voice (it quotes under 1 second end to end) or text, with UK accents | On video, answering by voice or text |
| Size | "340+ AI stations across the CPSA blueprint" | Cases across acute medicine, surgery, neurology, paediatrics and more |
| Marking | A session score, a global rating from Fail to Excellent, and the station mark scheme criterion by criterion | A score out of 100 across four areas, mapped to UKMLA CPSA, MRCP PACES and USMLE Step 2 CK criteria |
| Results and imaging | Data stations: talk an AI examiner through an X-ray, ECG or bloods | You choose the labs and imaging, then read the results, including real radiology images |
| Made for | UK medical students preparing for finals and the MLA | Medical students and junior doctors in the UK, Ireland, the US, Canada, Australia and beyond |
| Platforms | Web, plus an offline iOS, Android and iPad app | Web, iPhone and Android |
| Free option | A demo station | 5 cases in your first week, then 3 cases a week, plus unlimited 2-minute quick cases, with every case in the library open |
| Price | OSCE and MLA CPSA Bank: £39.99 on the annual option | $14.99 a month or $119.99 a year (UK: £15 a month or £129 a year) |
Quesmed facts from its OSCE-AI page, as of 20 October 2026. Diagnosica prices as of 20 October 2026.
Where is Quesmed OSCE-AI the better choice?
Quesmed OSCE-AI is built around the UK OSCE station. Each station has its own mark scheme, written by Quesmed's clinical team to mirror UK medical school criteria, and Quesmed says a blind study found its AI examiner agrees with clinicians about as often as two human examiners agree with each other (their claim). An AI examiner pushes you on X-rays, ECGs and bloods the way a viva would. Attempts have no cap, and £39.99 a year is far cheaper than Diagnosica's £129. It also sits inside Quesmed's question bank, with 35+ OSCE videos.
Where is Diagnosica the better choice?
Diagnosica follows the patient past the end of the station. Four things hold together: the patient is on video; the free tier is a real allowance, with no card; it has native Android and iPhone apps as well as the web; and it is used well outside the US, in the UK, Ireland, Canada and Australia, with UK cards paying in pounds. Android isn't the difference here, since Quesmed has an Android app too. The differences are the video patient, the full case (you decide what to order and live with the results, in around 15 to 20 minutes), and a free account that plays full cases every week rather than a demo station. Quesmed puts a typical station at 12 to 15 minutes including feedback. Diagnosica has no physical examination.
Which should you pick?
- UK final-year student drilling CPSA-style stations against a mark scheme? Quesmed OSCE-AI.
- Foundation doctor, or a student outside the UK, practising whole cases through to a plan? Diagnosica.
- Want both kinds of practice? They don't overlap much, so plenty of people could use one for stations and the other for cases.
Common questions
What is Quesmed OSCE-AI?
OSCE-AI is Quesmed's OSCE simulator for UK medical students preparing for finals and the MLA. You run a station with an AI patient by voice or text, then an AI examiner marks it against a station mark scheme, with a global rating from Fail to Excellent. Its page lists 340+ AI stations, as of 20 October 2026.
Does Quesmed OSCE-AI work on Android?
Yes. Quesmed's OSCE-AI page lists an offline iOS, Android and iPad app as part of the OSCE and MLA CPSA Bank, as of 20 October 2026, alongside the web version. Diagnosica also runs on Android, iPhone and the web, with one account across all three.
Which is better for UKMLA CPSA practice?
For stations under exam-style marking, Quesmed OSCE-AI. For working whole cases (history, investigations, diagnosis and plan), Diagnosica, whose scorecard maps to UKMLA CPSA criteria. Diagnosica has no physical examination, and neither tool is affiliated with the GMC or the Medical Schools Council.
How much does Diagnosica cost?
Diagnosica is free to start, with no card. A free account gets 5 cases in your first week, then 3 cases a week, plus unlimited 2-minute quick cases, with every case in the library open. Standard is $14.99 a month or $119.99 a year (UK: £15 a month or £129 a year) and allows 50 cases a month. Prices as of 19 October 2026.
Is Diagnosica legit, and who makes it?
Diagnosica is a small, independent company operated by CC Global Group LLC, live on the web, the App Store and Google Play. Cases are written for teaching and clinically reviewed before they go live. It is a learning tool, not a medical device, and it is not affiliated with any exam board.