You receive a BCG assessment invite.
Then the group chat starts.
“Is this Casey?”
“Is it the old online case?”
“Which version did your office get?”
Suddenly, the assessment name feels like the most important piece of information.
It usually is not.
The format matters. Your invitation is the source of truth for what you will actually face. But MBA candidates can spend so much energy identifying the assessment that they miss the more useful question:
What kind of thinking will the format force you to do differently?
Casey can feel conversational... until you realize who is missing
A chatbot-style case feels familiar because information can arrive in a sequence that resembles an interview.
You receive a problem. You respond. More information appears. The case moves.
That can make it tempting to treat the experience like a normal case with the interviewer replaced by software.
But software does not rescue an unclear thought.
There is no facial expression to read.
No interviewer says, “Interesting, what else?”
No one notices that you meant something smarter than what you actually entered.
That makes precision matter more.
Your structure has to survive without explanation around it. Your calculation has to stand on its own. Your recommendation needs to connect back to the objective without an interviewer helping you close the loop.
For a deeper walkthrough of the format, use the BCG Online Case (Casey Chatbot): Guide.
The classic online case looks different... but the trap is surprisingly similar
A more traditional online case can feel closer to a business-school exam.
Read information. Analyze data. Select or provide an answer. Move forward.
Familiar territory for an MBA.
Until familiarity creates speed.
You have spent months answering cold calls in class, scanning exhibits, and making decisions with incomplete information. That can create confidence, but it can also create a dangerous reflex: I know what kind of question this is.
Sometimes you do.
Sometimes the wording changed the objective.
One missed word can change the case.
| What you notice | What you may assume | What you still need to check |
|---|---|---|
| Profitability data | “This is a profitability case” | What decision is actually being asked? |
| Market growth | “The market is attractive” | Can the client capture that growth? |
| A familiar chart | “I know how to read this” | What changed across segments? |
| A multiple-choice answer | “One option looks closest” | Does the logic support every part of it? |
Different interface.
Same requirement: disciplined interpretation.
So should you prepare differently for each one?
Yes, but not by rebuilding your entire case-prep plan.
The core stays surprisingly stable.
You still need to structure ambiguity, interpret exhibits, perform clean calculations, prioritize information, and make a recommendation that answers the question.
What changes is the failure mode.
In a live case, communication can rescue imperfect structure.
In a digital case, your input may be the only evidence of your thinking.
That makes it worth practising the interface-specific skill you are least comfortable with. Typing a crisp synthesis. Reading instructions without rushing. Doing calculations without talking through them. Choosing when to move on.
Practise the constraint, not just the content.
The hardest version may not be the one you expect
MBA candidates often assume the harder assessment is whichever version feels less familiar.
But familiarity can be its own problem.
If the interface reminds you of an MBA exam, you may move too quickly.
If it reminds you of a chatbot, you may become casual.
If it looks like a case, you may reach for a memorized framework before understanding the objective.
The assessment label tells you what screen you will see.
It does not tell you where you will make mistakes.
For a deeper look at difficulty and what actually makes these assessments challenging, read How Hard is the BCG Online Case?.
So yes, find out which format your invitation describes.
Then stop comparing names.
The more useful comparison is already waiting inside your own prep.