20 June, 2025
Case Study: How Neurix Helped GradNext Launch "CaseBuddy," a Lifelike Voice AI Interview Coach
How a leading coaching institute partnered with Neurix AI to overcome training bottlenecks and deliver on-demand, scalable case interview practice with a custom voice AI platform.
At a Glance
Client: GradNext, a premier coaching institute for aspiring management consultants.
Challenge: The founder, an ex-BCG consultant, couldn't personally deliver the high volume of one-on-one mock interviews required for students to succeed, creating a scalability problem.
Solution: A custom-built, voice-first AI platform, "CaseBuddy," that simulates realistic, MBB-style case interviews, available to students 24/7.
Results:
Hundreds of AI-powered interviews conducted within days of launch.
Overwhelmingly positive user feedback citing a "10x more productive" experience.
Successful launch of a new, innovative product that enhances GradNext's market position.
The Challenge: The Manual Bottleneck in a High-Stakes World
For aspiring management consultants, the case interview is the final boss. Success hinges on rigorous practice. GradNext, founded by ex-BCG consultant Kashish, provided top-tier coaching but faced a critical operational bottleneck.
Their students needed consistent, high-quality mock interview practice. While Kashish conducted these sessions himself, the 30-minute one-on-one format was impossible to scale. There simply wasn't enough time in the day to give every student the personalized practice they needed to compete for roles at top firms like McKinsey, Bain, and BCG.
GradNext had a non-technical team. They needed a strategic partner who could not only build a complex EdTech AI solution from the ground up but also guide them through the entire scoping and development process. Their vision was clear: create a digital, AI interview tool that was just as challenging and dynamic as a human expert.
The Solution: Building a Custom Voice AI Agent for Real-World Prep
GradNext partnered with Neurix AI to bring their vision to life. The goal was to build "CaseBuddy," an interactive, voice AI platform that could engage students in unscripted, realistic case study conversations.
Our team worked in close collaboration with GradNext, providing end-to-end development. We focused on creating a seamless user experience powered by sophisticated conversational AI. This was not a simple chatbot; we engineered a custom voicebot capable of:
Presenting complex case prompts dynamically.
Understanding and responding to nuanced verbal answers.
Pushing students to think deeper and structure their thoughts, mimicking the pressure of a real interview.
Providing instant, actionable feedback to accelerate learning.
The result was a robust and intuitive platform that GradNext could proudly launch to their student base as a core part of their curriculum.
The Results: "Impressive Product!" and Unprecedented User Adoption
CaseBuddy was an instant success. Within just two days of launching, the response from GradNext students was, in their words, "blown away."
Immediate, measurable impact:
Hundreds of interviews were conducted on the platform almost immediately, proving the demand and the platform's stability.
The project was delivered on time, allowing GradNext to get the product into the hands of users without delay.
The qualitative feedback validated the entire project, with the founder of GradNext, Kashish, stating:
"Neurix AI delivered exactly what we needed - an AI-based case interviewer that worked smoothly from day one. The team was responsive, open to feedback, and genuinely committed to our project. We appreciated their straightforward approach and quick turnaround."
- Kashish, Founder, GradNext
The product's realism and effectiveness were echoed in the flood of positive user testimonials:
"Felt just like a real interviewer pushing me to think deeper. Honestly, this is 10x more productive than most case partners I've worked with."
"The instant feedback and structure suggestions are game-changing. I didn't know AI could challenge me like this."
A key stakeholder at GradNext personally tested the platform and sent a simple, powerful message: "Impressive product!!"
By partnering with Neurix AI, GradNext successfully transformed a manual coaching process into a scalable, high-tech, and highly effective digital product, solidifying their reputation as an innovator in the consulting prep space.
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