The best free BCG Casey chatbot simulation

What Is the BCG Casey Online Case?

BCG Casey is a chatbot-style online case that candidates commonly report as a roughly 25-35-minute screen with 6-10 mixed questions, although your invitation controls the exact format. The reported range comes from MConsultingPrep, MyConsultingCoach, Prepmatter, and IGotAnOffer, checked June 18, 2026.

Casey presents one business scenario, then walks you through a fixed sequence of questions about it. The interface looks like a messaging app, with the prompt, your answer box, and exhibits appearing in turn. There is no human interviewer, no hints between questions, and (in candidate reports) no going back once you submit. Practice scenarios often cover profitability, growth, market entry, pricing or operations.

BCG's Mexico recruiting page distinguishes the online case from the CCA, and other offices can use different steps. Match the wording in your own invitation before you prepare.

What Question Types Does Casey Ask?

Casey mixes answer formats and question intents. The format is how you respond; the intent is what skill it tests. Knowing both lets you recognize each prompt fast and avoid over-writing a short answer or under-structuring a long one.

The reported opener is a dataset-selection question: Casey shows roughly eight possible data sources and asks which are most relevant to the problem. This is a scoping test, the same judgment behind a good issue tree, so pick what genuinely moves the analysis and leave the noise.

By intent, you will see four recurring categories: structuring (the dataset-selection opener and "what would you investigate" prompts), quantitative (growth, share, break-even, weighted averages, working from exhibits where roughly half the data points may be irrelevant), data interpretation (read a chart or table and extract the one insight that matters), and critical thinking (judge a course of action, watching for qualifiers like "likely" versus "certainly"). For deeper drilling on chart-reading prompts, see data interpretation in case interviews.

How Does Casey Scoring Work?

BCG does not publish a complete Casey scoring formula. What multiple prep sources agree on for the current version is useful and practical:

• Approach is scored, not just the final number. BCG's public guidance stresses reasoning quality. In written answers, show your logic and the business implication, not only the answer.
• Check the stated scoring rules. Some prep sites report no negative marking, but BCG does not publish a universal Casey penalty rule. Use elimination when uncertain and follow the instructions shown in your assessment.
• You must answer to advance. There is no skip and no going back, so budget time so you are never forced to abandon a later question.

Treat any specific point-penalty or answer-weighting mechanic you read on a third-party site as directional, not official. Casey weighs the same competencies BCG names publicly: problem-solving, numerical reasoning, business judgment, and clear communication. The case interview scoring rubric maps the same dimensions.

Pass rate. BCG does not publish an official Casey pass rate. Third-party prep sites estimate that roughly 20-30% of candidates advance, but these figures are unofficial, so do not anchor your preparation on a funnel number.

How Do You Solve a Casey Math Question?

Casey math is short-text numerical input under a clock, usually pulling numbers off an exhibit. The grader rewards a clean setup and a sanity check, so state the formula, plug in, and connect the result to the decision.

Scenario. A consumer electronics company is considering entering the smartwatch market. The Year 1 market is $18B. Estimated Year 1 capture is a 3% revenue share. For later planning, the market is assumed to grow 8% in Year 2; that growth is not part of the Year 1 calculation. Fixed entry cost is $120M. Variable cost per unit is $85. Average selling price is $250.

Question. How many units must the company sell to break even in Year 1?

Solution.

1. Contribution margin per unit = $250 - $85 = $165 per unit.
2. Break-even units = fixed cost / contribution margin = $120,000,000 / $165 = 727,273 units (rounded up, since you cannot sell a partial unit).
3. Sanity check against the share assumption. Year 1 revenue at a 3% share = $18B x 0.03 = $540M. At a $250 selling price, that implies $540,000,000 / $250 = 2,160,000 units of demand, roughly 3x the break-even volume. On these numbers, entry clears break-even comfortably and looks viable.

Do not round the $165 margin or the intermediate revenue early, keep your units straight (dollars versus units), and finish with the implication ("this clears break-even with margin to spare"), not a bare number. The same setup is covered in break-even analysis for case interviews, and the underlying speed comes from mental math drills.

Which data should you select, and what can you conclude?

For the Year 1 break-even question, select fixed entry cost, unit selling price and variable cost per unit. For the demand check, also select Year 1 market revenue and the assumed revenue share. Leave the Year 2 growth rate out of both calculations. More data is not automatically more useful.

The 3% share is an assumption, not evidence that customers will buy. The next useful data would test willingness to pay, distribution access and competitors' response. This distinction keeps a correct calculation from becoming an unjustified recommendation.

When Is the Video Recommendation, and How Do You Structure It?

If your version includes the video, it comes after the chatbot questions. The widely reported format is 60 seconds to prepare and 60 seconds to record, with a hard cutoff when time runs out. It tests communication clarity and structure, not polish, so lead with the answer and back it with the two or three reasons that matter most.

A complete recommendation using the same numbers

This original practice answer uses only the smartwatch example above. Rehearse it to your own timer; speaking speed and the real recording limit vary.

I would proceed to a market-entry pilot, subject to validating demand. At a $250 selling price and $85 variable cost, each unit contributes $165. We need about 727,273 units to cover the $120 million entry cost. The assumed 3% share implies 2.16 million units in Year 1, so there is room above break-even. But that share is not yet proven. The main risk is overestimating demand at this price. I would test willingness to pay and distribution access, then update the sales forecast before committing the full investment.

Apply the same sequence in the practice case above: select evidence, calculate, and give a recommendation with a clear limitation.

What Mistakes Cost the Most Points?

The most frequent error is spending too long on early questions. Candidates sink five to seven minutes into a straightforward structuring prompt and run out of time on harder math later. Budget two to three minutes per question and move.

The math errors that recur are mechanical, not conceptual: rounding intermediate calculations early, confusing percentage points with percentages, and skipping unit checks on exhibits. A single early calculation error often cascades, because later questions can build on the same numbers.

For a broader catalog of what graders penalize, see case interview mistakes to avoid.

How Does Casey Fit the Full BCG Pipeline?

Casey is one early gate. The skills it screens transfer directly to BCG's live rounds, which are candidate-led and exhibit-heavy by design. Pair this page with timed BCG case interview practice and the full BCG case interview guide.

BCG Full Interview Pipeline

1. 01

   Application. Resume and cover letter submitted online

2. 02

   Casey Chatbot. Online case screen; exact format varies by invite

3. 03

   First Round. 2 live interviews (case + fit), ~45 min each

4. 04

   Final Round. 2-3 interviews with Partners

5. 05

   Offer Decision. Within 1-2 weeks of final round

Some BCG invitations assign the Consulting Career Assessment (CCA) rather than Casey, and some candidates receive both. Casey is a chatbot case with exhibits and math; BCG describes the CCA as a short, multidimensional assessment. If it is the CCA you need, try the CCA-style simulator and compare the CCA practice tools.

How Should You Prepare in Two Weeks?

Week 1, foundations. Days 1-2: read BCG's official case guidance and any assessment-specific sample supplied with your invitation. Days 3-4: drill exhibit interpretation about two hours daily using financial news charts, writing the one key insight in under 60 seconds each. Days 5-7: math reps on percentages, growth rates, weighted averages, and break-even, both mental and calculator-assisted.

Week 2, simulate. Days 8-10: timed 30-minute sets of 8-10 mixed questions so pacing becomes automatic. Days 11-12: record five-plus video recommendations daily. Days 13-14: two to three full end-to-end mock assessments.

The underlying skills are firm-agnostic: the consulting aptitude test overview benchmarks Casey against McKinsey Solve, Bain SOVA, and the Big 4 tests, and career switchers can use case interview prep for career changers.

BCG Casey Simulators Compared (2026)

The names that come up most for the BCG Casey chatbot are Road to Offer, Prepmatter, PrepLounge, CaseBasix, and MConsultingPrep. Here is how they compare on what you can verify before you pay.

Different candidates weight the same simulator differently, so the honest answer is "best for what":

• Per-question feedback at the lowest published cost per case: Road to Offer. $69 for 10 original cases is about $6.90 each.
• Largest interactive Casey pack with a stated count: Prepmatter. It advertises 15 interactive cases, but no public price was visible in this review.
• Best format variety: PrepLounge. Its paid bundle mixes four live Casey simulations, two PDF Casey cases, and four video simulations.
• Best free sample dashboard: CaseBasix. Its public sample is a complete chatbot case with overall, question-type, and timing diagnostics.
• Most raw test volume: MConsultingPrep. The top tier contains 30 tests for $350.

When you compare providers, check the exact free boundary, the price shown before signup, cost per case, whether feedback is per question, and whether the content is original and clearly independent. Currency and format differences mean cost per case is a value signal, not a perfect like-for-like comparison.

Sources

• BCG case interview preparation (official): careers.bcg.com
• MConsultingPrep BCG online case chatbot guide: mconsultingprep.com
• MyConsultingCoach Casey guide: myconsultingcoach.com
• Prepmatter BCG online case assessment: prepmatter.com
• IGotAnOffer BCG Casey chatbot guide: igotanoffer.com
• PrepLounge BCG online case bundle: preplounge.com
• CaseBasix BCG Casey course: casebasix.com
• MConsultingPrep BCG Casey simulation: mconsultingprep.com

Guide sources checked June 18, 2026; simulator comparison checked July 20, 2026. BCG, Casey, and CCA are trademarks of Boston Consulting Group. Road to Offer is not affiliated with or endorsed by BCG.