Best USMLE Question Banks in 2026: Step 1, Step 2 CK and Step 3 Compared

Choosing a question bank is one of the biggest study decisions you will make for the USMLE, and the prices vary a lot. This guide compares the main options for Step 1, Step 2 CK and Step 3 using the prices and question counts published on each company’s own site, then tells you which one to pick for your situation.

Which USMLE question bank is best?

Here is the short version. Use the step-by-step tables further down for full plans and prices.

How we compared them

We compared each bank on five things: what the question bank contains (question counts and, for Step 3, CCS cases), what comes with the plan (self-assessments, library, score predictor, analytics), price and plan length, whether you can try it free, and any guarantee.

Prices, question counts and trial terms come from each company’s official pages. The qualitative points, such as who each bank suits, reflect what those companies publish about their products and how medical students commonly describe them. We have not run head-to-head score studies, and we do not claim any bank raises scores by a specific amount. Where we could not confirm a number on an official page, we say so instead of guessing.

We update this page when prices or products change, and we only change the “updated” date when we actually revise it.

Step 1 question banks compared

Step 1 has been pass/fail since 2022, so there is no score to chase. You still have to pass, and a question bank is the most direct way to rehearse the exam’s format and find gaps. If you want to see how our own Step 1 practice works, read about the MedPrep Step 1 question bank.

Step 2 CK question banks compared

Step 2 CK still returns a three-digit score, so self-assessments and score prediction matter more here than they do for Step 1. MedPrep also offers a dedicated Step 2 CK question bank.

Step 3 question banks compared

Step 3 also returns a three-digit score, and it includes Computer-based Case Simulations (CCS), where you manage a virtual patient by ordering tests and treatments. Among the banks we checked, only UWorld lists CCS cases on its official page.

UWorld: strengths, drawbacks and which plan to buy

UWorld is the question bank most students name first, and its official pages back up the scale: 3,600+ Step 1 questions, 4,250+ Step 2 CK questions, and for Step 3, 2,100+ questions plus 90+ CCS cases.

Strengths

• The largest Step 1 and Step 2 CK question banks among the banks we could verify.
• Official self-assessments on longer plans, up to three for Step 1 and Step 2 CK.
• CCS case simulations for Step 3, which no other bank in this guide lists.
• An optional QBank Plus tier that adds medical videos.

Drawbacks

• The highest prices of the banks we compared: the 90-day plan is $459, against $199 for TrueLearn’s 90-day Step 1 plan and $378 for AMBOSS’s six-month plan.
• The 30-day plan includes no self-assessments.
• Videos are not included unless you pay $99 more for QBank Plus.
• We could not confirm a free trial on the official pages we checked.

Which plan to buy

UWorld sells extra self-assessment forms for $50 each, with two weeks of access. If your dedicated period is short, a 30-day plan ($349) plus one form ($50) comes to $399. That is $60 less than the 90-day plan ($459), but it gives you 60 fewer days of question access. If you need more than a month of practice, the 90-day plan is usually the better value.

UWorld vs AMBOSS

This is the comparison students ask about most. The short version: UWorld is the reference point for exam-style volume and official self-assessments, and AMBOSS bundles a library and score predictor at a lower price.

If you want to learn while you practice and your budget is limited, AMBOSS is the more natural fit. If you want a widely used standard for exam-style volume and official self-assessments, UWorld is the safer primary bank. Many students use one as their primary bank and the other to see different question styles, but you do not need both.

TrueLearn and other question banks

TrueLearn

TrueLearn lists 3,000+ Step 1 questions and 4,100+ Step 2 CK and shelf questions. It has the lowest entry prices of the banks with published pricing ($149 for 30 days of Step 1, $199 for 90 days), a first-time pass guarantee on plans of 90 days or longer, and performance analytics with national benchmarking. Its USMLE page does not list a Step 3 bank, and its Step 1 bank is smaller than UWorld’s.

Kaplan, BoardVitals, Lecturio and USMLE-Rx

Other banks worth a look include Kaplan Qbank, BoardVitals, Lecturio (which pairs video lectures with questions) and USMLE-Rx (built around the First Aid ecosystem). Their official pages were not available to us when we checked, so we are not listing prices or question counts for them rather than repeating figures we could not confirm. Check their sites directly and compare against the tables above.

MedPrep Institute: adaptive practice (our product)

MedPrep Institute is the question bank we build. It works differently from a fixed-order bank: when you miss a question, the adaptive engine flags the underlying concept and brings you variations on it through spaced repetition over the following days, instead of just moving on.

What you get

• NBME-style vignettes with clinical images, by topic or mixed across systems.
• An adaptive engine that targets your weak spots.
• Built-in spaced repetition, so missed concepts come back on a schedule.
• Physician-reviewed explanations.
• Practice for Step 1, Step 2 CK, Step 3 and the ABIM exam.
• A question bank that is expanded regularly.

Who it suits, and where to add something

MedPrep suits students who keep missing the same concepts and want reviews scheduled for them instead of planning them by hand. It does not include CCS case simulations, official-style self-assessment exams or a score predictor. For those, pair it with UWorld’s self-assessments or the official NBME assessments.

How to choose the right question bank

• You are in coursework and want to learn as you practice: AMBOSS, for the library and study plans, or MedPrep for a light daily habit with spaced repetition.
• You are in dedicated study and want exam-style volume plus self-assessments: UWorld.
• Your budget or timeline is tight: TrueLearn ($149 for 30 days, $199 for 90 days), or a UWorld 30-day plan plus one self-assessment form ($399).
• You keep missing the same concepts: add MedPrep’s adaptive review alongside your primary bank.
• You are preparing for Step 3: UWorld for the CCS cases, plus another bank for extra multiple-choice practice.

How many questions should you do per day?

There is no single right number. During coursework, a small daily set tied to what you are studying works well. During dedicated study, many students move to two or three full 40-question blocks a day, since Step 1 and Step 2 CK blocks hold up to 40 questions. Review time matters more than volume: reading every explanation, including for questions you got right, is where most of the learning happens.

When should you start a question bank?

Many students use a bank alongside coursework in untimed, topic-based mode to build the habit, then do a fresh, timed pass during dedicated study. If you plan to use self-assessments to judge readiness, save them for close to your exam date. Because plans are time-limited (UWorld sells 30 to 730 days), buy the plan length that matches when you will actually use it.

Free ways to practice

• TrueLearn: a 5-day free trial with 120 Step 1 questions.
• AMBOSS: a 5-day free trial.
• MedPrep Institute: a 7-day free trial, cancel anytime.
• The official USMLE website: content outlines, question format guidance and the interactive testing experience for each Step.
• Your school: ask the library or student affairs office about institutional access.

How to get the most out of a question bank

1. Read every explanation, including for questions you answered correctly by guessing.
2. Track misses by concept, not by question, so you can see patterns.
3. Return to missed concepts on a schedule instead of once. Spaced repetition does this for you.
4. Move to timed, mixed blocks as your exam gets closer.
5. Use self-assessments to check readiness, not as daily practice.
6. Do not chase raw question counts. Depth of review beats volume.

Frequently asked questions

What is the best question bank for USMLE Step 1?

UWorld is the most widely used Step 1 bank and has the largest verified question count (3,600+). AMBOSS is the main alternative if you want a library and score predictor in one plan, TrueLearn has the lowest entry prices, and MedPrep Institute adds adaptive weak-area review.

Is UWorld worth it for Step 1?

For most students it works well as a primary bank during dedicated study, with the 90-day plan at $459 as the usual starting point. If money is tight, AMBOSS at $378 for six months or TrueLearn at $199 for 90 days covers similar ground with different tradeoffs.

Do I need a question bank now that Step 1 is pass/fail?

Step 1 has been pass/fail since 2022, but it is still an exam you must pass. Practice questions are the most direct way to rehearse the format and find gaps, so a question bank matters less for chasing a score and more for confidence that you will clear the standard.

What is the best question bank for Step 2 CK?

UWorld’s 4,250+ question bank is the default choice, and TrueLearn’s 4,100+ question Step 2 CK and shelf bank is the main alternative, especially if you want shelf practice in the same subscription. Step 2 CK is scored, so self-assessments matter more.

What is the best question bank for Step 3?

UWorld, because its Step 3 page lists 90+ CCS case simulations alongside 2,100+ questions, and none of the other banks we checked list CCS cases. Add a second multiple-choice bank if you want more volume.

Are there free USMLE question banks?

Yes. TrueLearn and AMBOSS each offer a 5-day free trial, MedPrep Institute offers a 7-day free trial, and USMLE.org publishes official content outlines and an interactive testing experience. Also ask your school about institutional access before paying.

Can I use more than one question bank?

Yes, and many students do: a primary bank for volume, plus a second for different question styles or adaptive weak-area review. Use the second bank to find topics to revisit rather than only to raise your question count.

Sources and disclaimers

Prices, question counts and trial terms were checked on the official pages below on September 24, 2026.

• UWorld Step 1, Step 2 CK and Step 3
• AMBOSS USMLE preparation
• TrueLearn USMLE and Step 1 SmartBank
• USMLE.org for Step scoring and official materials

MedPrep Institute is not affiliated with or endorsed by NBME, FSMB, USMLE, UWorld, AMBOSS, TrueLearn or any other company named here. All trademarks belong to their owners and are used descriptively. This guide is for general information and is not a guarantee of any exam result.