AskMed vs Grok

What is Grok?

Grok is a general-purpose AI assistant first released by xAI, and its App Store and Google Play listings now name the maker as SpaceXSI. The listings describe Grok as "designed to be maximally truthful, useful, and curious" and set out four main features: an AI assistant that answers questions, does deep research on the web and analyzes documents, photos and links; Grok Imagine for image and video generation; Voice Mode for spoken conversations; and real-time information from X, with "advanced searches on X" to see what people are saying. Grok runs on iPhone, iPad, Android and the web at grok.com, and the App Store lists Grok under Productivity. According to the listings, students use Grok to study, professionals use it for research and writing, creators make images and videos, and developers get coding help. Medicine is not named as a focus, and the listings name no medical source list, drug labels or clinical guidelines behind Grok's answers.

How do AskMed and Grok answer a medical question differently?

AskMed and Grok answer a medical question differently because AskMed searches a fixed list of medical sources first and writes the answer only from what that search finds, while Grok is a general assistant that replies from its own model and can search X and the web. AskMed's list covers journals and databases such as PubMed, the Cochrane Library, NEJM, The Lancet, JAMA and The BMJ; guidelines and agencies such as NICE, the USPSTF, WHO, CDC and ECDC; FDA and DailyMed drug labels; and references such as StatPearls and the MSD Manual. AskMed does not search forums or social media, ranks guidelines first, then systematic reviews and meta-analyses, prefers sources from the last 10 years, and links every claim to its source's exact web address. Grok's listings describe deep research on the web and searches on X, a social network whose posts are not peer reviewed, and don't say which medical sources Grok prefers when it answers a clinical question.

Each AskMed answer draws on 8 sources by default, and the source filters let you turn journals, guidelines, drug labels or references on or off, pick study types from systematic reviews to clinical trials, and set anywhere from 3 to 12 sources. How AskMed answers lists every source and explains the citations in full.

What happens when no source is found?

When AskMed's search finds no usable medical source, AskMed doesn't answer from memory: instead of an AI-written answer, AskMed shows a fixed reply, written in advance, that says no medical sources were found and asks you to rephrase the question. The same fixed reply replaces any answer that comes back citing no source at all, so an uncited answer is never presented as if it were evidence. When the sources cover only part of a question, AskMed is told to say plainly that the evidence doesn't answer the rest, and to cite fewer sources rather than fill the gap with weak or off-topic ones. When sources disagree, the answer says so and says which evidence is stronger. Grok's App Store and Google Play listings and grok.com don't state what Grok does when no medical source supports an answer. For a doctor, nurse or pharmacist, a clear "no source found" is more useful than a fluent answer with nothing behind it.

Where do drug facts come from?

AskMed takes drug facts from official drug labels, the prescribing information a regulator approved, while Grok's listings and grok.com name no drug label source. AskMed reads FDA labels and DailyMed, and for local brand names AskMed also checks official drug registries from many countries, such as the European Medicines Agency and the UK's medicines.org.uk, so a brand name sold in Europe or the UK leads to the right label. The label is the primary document for a medicine's indications, contraindications, boxed warnings, interactions and adverse reactions, and each drug claim in AskMed links to the label's exact web address, so a pharmacist checking an interaction or a nurse checking a side effect can open the label and confirm the wording. AskMed never gives doses, dose calculations or titration schedules, even for exam questions. A drug answer still covers uses, mechanism, first-line and alternative options, how dosing is adjusted for kidney or liver function, monitoring and side effects.

Exam prep built in

AskMed includes Exam Prep for 10 licensing exams, while Grok's listings say students use Grok "to study and get clear explanations" but state no question bank for any licensing exam. AskMed's question banks cover PLAB, USMLE Step 1 and Step 2 CK, PLE, EDN, UKOMNAS, NEET-PG, ENARM, TUS, Ghana MDC and Israel MLE. Each bank is written in the language of its exam, so a candidate for a non-English exam practices in the language of the real paper. Every question comes with an explanation for every option, not only the right one, and a timed mock of 40 questions in 60 minutes lets you practice under exam conditions. When a question raises something you don't know, you can ask AskMed in the same app and get an answer cited to journals, guidelines and drug labels, then go back to the bank. For a medical student, a resident or an international medical graduate, AskMed keeps exam practice and cited answers in one account.

The best AI apps for USMLE guide compares study tools for Step 1 and Step 2 CK, and the PLAB 1 guide does the same for the UK exam.

When should you use AskMed, and when Grok?

Use AskMed for medical questions and Grok for general tasks outside medicine. AskMed is a medical reference: use AskMed when the answer will inform patient care, a ward round, a pharmacy check, a literature review or exam revision, because AskMed searches journals, guidelines and drug labels first and puts a citation you can open after every claim. Grok is a general assistant: its App Store listing names image and video generation with Grok Imagine, voice conversations, coding help, writing, and real-time news and conversations on X. Those tasks sit outside what AskMed does, since AskMed doesn't generate images, write code or follow the news. A clinician or student can keep a general assistant for everyday work and use a medical tool for clinical questions. When a medical question comes up in a general chat, ask it again in AskMed, where the answer comes from medical sources only, each claim carries a citation, and AskMed says so when no source supports an answer.

How to check an AI medical answer

Checking an AI medical answer takes four steps, whichever tool wrote the answer, and the consumer terms for Grok at x.ai themselves say Grok's output may not always be accurate, is not professional advice and should be checked with your own research. First, open the source behind the sentence you will act on and confirm the source says the same thing for the same patient group, because a trial in adults doesn't answer a question about children. Second, look at the type and date of the source: a current guideline outweighs an older review, one small study is weaker than a meta-analysis, and a social media post is not evidence. Third, check whose guidance it is, since NICE, US and European guidelines can disagree. Fourth, take doses from the current label or your local formulary, never from a chat answer. AskMed makes the first step quick: every claim carries its own citation, and each source is labelled Guideline, Research, Drug label or Reference.

1. Open the citation behind the claim you'll act on. Make sure the source says what the sentence says, for the same group of patients.
2. Look at the type and date of the source. A current guideline outweighs an older review, and a post on a social network is not a source at all.
3. Check whose guidance it is. NICE, US and European guidelines can disagree, so follow the one that applies where you practise.
4. Get doses from the label. Use the current prescribing information or your local formulary for amounts and schedules.

For what studies have found about general chatbots on medical questions, see Is ChatGPT accurate for medical questions?, and for other tools built for clinicians, the best AI apps for doctors.

Bottom line

For medical questions, AskMed is the stronger choice over Grok. Grok is a capable general assistant, and its own listings describe it as one: conversation, deep research on the web, coding, writing, image and video generation, voice chat and real-time information from X, for "anyone looking for a powerful AI chat experience". AskMed is built for one job, answering medical questions for everyone in medicine, from doctors, residents and medical students to nurses, pharmacists and researchers. AskMed searches a fixed list of journals, guidelines and drug labels before answering, cites every claim to its source's exact web address, and says so when no source is found. AskMed reads official drug labels and registries outside the US, lets you filter sources by type, study type and number, and includes Exam Prep for 10 licensing exams. AskMed gives no drug doses, carries no pharma advertising, and works worldwide on iPhone, iPad, Android and the web, in seven languages, with no US license or NPI needed.