OFFERGOBLIN vs IBvine: which IB interview prep platform should you actually use in 2026?

Question bank: OFFERGOBLIN has nearly 2x the questions

OFFERGOBLIN ships 3,471 verified questions versus IBvine's ~1,818. The technical gap is almost 2:1 (2,657 vs 1,484) and the behavioral gap is almost 2.5:1 (814 vs 334). Every question is tagged by bank, round, year asked, coverage group, and city — across 37 banks including Goldman Sachs, Morgan Stanley, J.P. Morgan, Evercore, Centerview, PJT, Moelis, Lazard, Perella Weinberg, Qatalyst, Blackstone, Houlihan Lokey, and every other name on the list.

If your goal is to see basically every technical question ever asked in an IB interview, OFFERGOBLIN is the bigger pool. Full stop.

Curriculum: guided vs. disorganized

OFFERGOBLIN walks you through technicals in order: Accounting → Capital → Valuation → Deal Mechanics. Each phase has its own topic hub with articles and FAQs. The Learning Pathway article tells you exactly what to study next.

IBvine has no pathway. You get a module library, you pick a topic, and you figure it out. Fine if you already know what you are doing. Bad if you are starting from zero and trying to prep efficiently.

GOBLINMODE: the part IBvine has no answer to

OFFERGOBLIN's GOBLINMODE tracks what you have answered correctly, what you have marked "Don't Know," and what topic you are weakest in — then pulls your next question from your personal weak-spot profile. You do not browse. You practice. The longer you use it, the more targeted it gets.

IBvine is a browse-and-filter library. It cannot tell you what you should be drilling today, because it does not know what you already know.

Excel and modeling: only one of these teaches you

OFFERGOBLIN ships model training — an interactive Excel shortcut drill inside a real spreadsheet grid. You hit the keys, it checks you, it makes you repeat the ones you bomb. Muscle memory for Superday modeling tests.

IBvine does not teach Excel. At all. For modeling, IBvine students still have to buy Wall Street Prep or BIWS separately.

Mock interviews: IBvine's one real advantage

Giving credit where it is due: IBvine has built the largest audio mock interview library in the space — 93 sessions, 33+ hours covering core concepts, firms, verticals, and advisory groups. It is listening content, not interactive, but it is genuinely useful for commutes. Their sister product IB Mock (sold separately) adds voice-to-voice simulated interviews.

OFFERGOBLIN does not ship audio mock content. If that is specifically what you need, IBvine is the honest pick for that one feature.

Pricing

Both cost the same at the top tier. IBvine has a cheaper $25 technicals-only middle tier if all you want is a discount question bank and you are willing to drop behaviorals, mocks, and advanced content. That is the spirit of the IBvine product — cheap and stripped down.

The bottom line

IBvine is the discount, unguided version. It is cheaper at the middle tier, it is a library you browse, it does not teach Excel, it does not spot your weaknesses, and it originated as a free dump of the 400 questions that got rebuilt into a paid product last year.

OFFERGOBLIN is the comprehensive, guided version. Nearly 2x the question pool, a structured curriculum, an adaptive practice engine, Excel shortcut drills, and a topic hub with articles and FAQs — all shipped as one integrated product, built from day one by a former Centerview M&A banker who actually sat in the chair.

If you are serious about IB recruiting and you want the most thorough prep you can get at $40/month, pick OFFERGOBLIN. If you want cheap, unguided, and you already know what you are doing, IBvine is fine.

Either way, stop reading comparison articles and go practice.