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CaseStar
The 10-minute baseline

Voice case interview practice for McKinsey, BCG and Bain

I'm interviewing at in .

Score me, then build my plan.

Score on the rubric BCG, Bain & McKinsey use, plus a plan paced to your interview. Voice-default. No signup until your debrief.

Scored on the rubric BCG, Bain & McKinsey use · every observation cites your transcript — nothing genericBCG · McKinsey · Bain · OW · Kearney

01 / Inside a CaseStar interview

Your thinking.
A real conversation.

Read the brief. Explain your approach out loud. Your voice interviewer follows your reasoning, challenges your assumptions and shares exhibits as the case unfolds.

CaseStar / Case interviewLive voice sample · up to 60 seconds

A real conversation. Right here.
Engagement Manager
CaseStar voice interviewer
“Where would you start investigating
the hospital’s meal waste?”

Tap the mic. I’ll ask first. You take it from there.

60-second conversation · No signup

In your interview, just speak. No answer choices.

The sample uses your microphone only after you start. Audio is processed by OpenAI to respond. Live captions stay in this page; CaseStar doesn’t save the sample’s audio or transcript.

Try my own voice session

MealMosaic / Exhibit 01

A day of hospital meals

Illustrative daily volumes. Waste is measured as the equivalent of a full meal.
MealServedWasteUneaten
Breakfast30010%30
Lunch40030%120
Dinner30020%60

Your interviewer might ask: “What stands out, and what would you investigate next?”

02 / Turn an insight into progress

Don’t just practice.
Know what to practice next.

A full session gives you more than a result. Use the feedback to understand your thinking, then work on the skill that needs attention.

  1. 01

    Notice the pattern

    “I recommended a solution before checking the cause.”

  2. 02

    Work on one skill

    Separate observation from assumption in a focused drill.

  3. 03

    Try it in a fresh case

    Use a new context to see whether the habit carries over.

Illustrative next steps after a case interview. Your session feedback will be based on your own responses.

Find my starting point
A leather preparation folio beside handwritten charts on a warm ivory desk
A little structure. A clear next step.Your preparation, at your pace.

03 / A clear place to start

Start small.
Build from there.

Try the baseline first. Decide on more practice after you’ve seen your feedback.

10 minutes

Your first baseline

A short voice session to find your starting point, followed by feedback and a preparation plan.

Begin my baseline
€20 / Starter pack

More practice, when you’re ready

2 full case interviews with personalized coaching and feedback. Choose the pack that fits your preparation.

Compare all packs

A few useful answers

Before you begin.

Do I need case interview experience?

You can start with the baseline to see where you stand. Your feedback helps you choose what to practise next, whether you are learning the basics or preparing for another round.

Is the example above a real interview?

Yes. Start the short sample to speak with the voice interviewer for up to 60 seconds. It uses your microphone after permission, and ends automatically. OpenAI processes the audio to respond; CaseStar does not save this sample’s audio or transcript. You can also explore the illustrative exhibit without using your microphone. In a CaseStar voice interview, you explain your thinking aloud, respond to follow-up questions and receive feedback on your session.

What happens after the baseline?

You review your feedback and preparation plan. When you want more practice, you can choose a credit pack for full interviews. See the pricing page for current packs and what each includes.

Can I practise in another language?

Yes. You can choose your interview language in session setup. Available languages include English, Dutch, German, French, Italian, Japanese, Korean and Chinese.

Your next ten minutes

Let’s see how you think.

Begin my baseline