What is an AI practice tool?
Imagine you're preparing for a big test, but you don't have access to the same practice materials as your classmates who can afford expensive tutors. This is exactly what many job candidates face when preparing for tough interviews – especially for top firms like McKinsey. That's where AI tools come in.
An AI practice tool is a computer program powered by artificial intelligence that helps people learn and practice skills by giving them feedback, just like a real coach would. In this case, McKinsey created a tool that helps people practice the kind of math and logic problems they'll see in job interviews.
What is it?
McKinsey, a global consulting firm, developed a free AI tool called Lilli Consulting to help people prepare for their interviews. This tool is designed for job seekers applying for entry-level positions like business analysts or associates.
The main focus of the tool is to help candidates practice what's called a quantitative case study. This is a type of interview question that involves solving business problems using math and logic – like figuring out how much profit a company might make or how to improve a process.
How does it work?
Think of this AI tool like a smart tutor who is always available. When a candidate uses the tool, they get a problem to solve – usually something related to business math or logic. The AI then checks their answer and gives feedback, just like a human coach would.
Here's how it works in simple steps:
- Problem generation: The AI creates a new math or logic problem for the user to solve.
- User input: The candidate solves the problem and enters their answer.
- AI evaluation: The AI checks the answer and provides feedback on what was done right or wrong.
- Practice loop: The candidate can try again and again until they get it right.
Unlike a human coach who might cost $500 per hour, this AI tool is completely free and available 24/7. It's like having a personal tutor who never gets tired and is always ready to help.
Why does it matter?
This AI tool is important because it helps make job interviews fairer for everyone. Here's why:
- Equal access: Not everyone can afford expensive interview coaching. This tool gives everyone a chance to practice for free.
- More confidence: When people practice, they feel more confident during the real interview.
- Better preparation: The AI tool helps people get better at solving business problems quickly and accurately.
It's like giving all students the same study materials before a test, so the only thing that matters is how well they know the subject – not how much money their parents can spend on tutoring.
Key takeaways
- An AI practice tool is a computer program that helps people learn by giving them practice problems and feedback.
- McKinsey created a free AI tool called Lilli Consulting to help job candidates prepare for interviews.
- The tool helps people practice math and logic problems that appear in business interviews.
- This makes the job interview process more fair by giving everyone access to practice, regardless of their budget.
- AI tools like this are becoming more common as companies want to help people succeed while also improving their own hiring process.
In simple terms, this AI tool is like a helpful robot friend that teaches you how to solve problems so you can do well in interviews – and it's completely free!



