An honest comparison of the major pre-made decks - where each one excels, where each falls short, and how to fill the gaps with AI-generated custom cards.
AnKing v12 is the clear choice for most students in 2026. It's actively maintained, aligned with First Aid, and covers the vast majority of Step 1 content. The other decks (Zanki, Brosencephalon, Pepper) are older, less maintained, and largely superseded by AnKing. Your effort is better spent supplementing AnKing with AI-generated custom cards than trying to run multiple pre-made decks in parallel.
| Deck | Cards | Last updated | FA alignment | Maintained? | Verdict |
|---|---|---|---|---|---|
| AnKing v12 | ~30,000 | 2025–2026 | Excellent | Yes (active) | Recommended |
| Zanki | ~20,000 | 2018–2019 | Good (older edition) | No (archived) | Largely in AnKing |
| Brosencephalon | ~6,500 | 2016–2017 | Moderate | No (archived) | Use AnKing instead |
| Pepper (Pharmacology) | ~3,500 | Intermittent | Good for pharm | Partial | Supplement if weak in pharm |
AnKing is a community-maintained consolidation of Zanki, Brosencephalon, and several other decks, with regular updates to match the current edition of First Aid. It's the closest thing to a single, comprehensive Step 1 deck.
What it does well:
Where it falls short:
Zanki was the gold standard from roughly 2017–2020. It's largely been incorporated into AnKing. If you're starting fresh in 2026, there is almost no reason to use Zanki separately - all of its best content is in AnKing v12, which is better maintained and more up to date.
The exception: some students who started with Zanki before AnKing existed have large mature decks with years of review history. Switching to AnKing would reset all review intervals. In this case, continuing with a maintained Zanki is reasonable - but adding new material via AnKing tags is still advisable.
Pepper is a pharmacology-specific deck built around Sketchy Pharmacology. For students who are particularly weak in pharmacology or who want more pharmacology depth than AnKing provides, Pepper can supplement well.
However, AnKing v12 includes most high-yield pharmacology content, and running both decks creates significant card overlap and review burden. Use Pepper if you're specifically targeting pharmacology weakness - otherwise stick with AnKing for pharm and supplement with AI-generated custom cards for gaps. See the pharmacology flashcards guide for the full strategy.
Pre-made decks, no matter how comprehensive, will never perfectly match your specific curriculum, your weaknesses, or the specific questions you're getting wrong in practice. The best supplement to any pre-made deck is custom cards generated from:
When you miss a question, the explanation reveals your knowledge gap with precision. Copy that explanation, upload it to an AI generator, and get a card that tests exactly what you missed. These are the highest-yield cards you can add to your deck.
Your personal annotations in First Aid represent content you've identified as important but that isn't already covered well in AnKing. Upload annotated pages to generate cards from your own insights.
Some medical schools heavily emphasise content that isn't well-represented in Step 1 pre-made decks. Lecture slides from your professors, uploaded to an AI generator, fill these gaps efficiently.
For the complete Anki export workflow, see how to export flashcards to Anki. For the full USMLE flashcard strategy, see the USMLE flashcards guide.
While AnKing provides a world-class foundation, the most critical part of your Step 1 preparation happens in the "gaps"—the specific nuances you miss during UWorld or NBME practice exams. A common mistake students make is relying solely on the pre-made deck and simply reading the UWorld explanation once. This leads to "leaky bucket syndrome," where you understand a concept on Tuesday but forget it by Friday.
To truly master the material, you must create custom cards for every "educational objective" you miss. However, manual card creation is time-consuming and often leads to poorly formatted cards that are difficult to review. This is where tools like StudyCards AI become invaluable, allowing you to quickly convert complex UWorld explanations or screenshots into high-yield Anki cards without spending hours on formatting.
The biggest psychological hurdle with AnKing v12 is the sheer volume of cards. Many students make the mistake of unsuspending entire organ systems at once, only to be crushed by 500+ reviews per day within a week. To avoid burnout, you must shift from a "deck-based" mindset to a "resource-based" workflow.
The most efficient way to utilize AnKing is to use it as a reinforcement tool rather than a primary learning tool. Never unsuspend a card for a concept you haven't first encountered in a primary resource. This ensures you are practicing active recall of a concept you actually understand, rather than blindly memorizing strings of text.
Upload your UWorld wrong answers, First Aid annotations, or lecture slides. StudyCards AI generates Anki-ready cards that fill exactly the gaps in your existing deck.
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