Practice with personalized questions across 29+ technologies and 5 question types. Get expert-level feedback at 1/10th the cost of mock interview services.
No credit card required. 5 free questions to start.
Current options leave you overpaying, under-prepared, or both
LeetCode offers 3,800 problems and says "good luck." No personalization, no feedback on why your solution works or doesn't.
Expert mock interviews at interviewing.io cost $225 per session. Most candidates need 10-20 sessions. That's $2,250-$4,500.
Peer platforms like Exponent ($79/mo) match you with random reviewers. Quality varies wildly. And they no-show 20% of the time.
No other platform covers all essential interview question types in one place
Algorithms, data structures, and implementation challenges tailored to your skill level
Theory, design patterns, best practices, and fundamental CS concepts
Architecture, scalability, trade-offs, and distributed system challenges
Identify bugs, fix issues, and explain root causes in real code
Evaluate code quality, suggest improvements, and identify anti-patterns
A complete interview preparation platform built for real-world success
From Python and JavaScript to Go, Rust, and Kubernetes — choose your target technology and skill level. GoliathPrep generates questions specifically for your experience.
Every answer is graded by Claude AI with a detailed score, strengths analysis, and specific improvement suggestions. Track your sessions and resume anytime.
Visual analytics show your performance trends over time. See which technologies you're mastering and where to focus your practice.
More features, better feedback, lower price
| Feature | GoliathPrep | LeetCode Premium | interviewing.io | Exponent |
|---|---|---|---|---|
| Monthly Price | $39.99/mo | $35/mo | $225/session | $79/mo |
| AI Personalization | Every question | Limited | ||
| 5 Question Types | All 5 | Coding only | Varies | Limited |
| Expert Feedback | Every answer | Live only | Peer varies | |
| Practice Anytime | 24/7 | Schedule | Schedule | |
| 29+ Technologies | Limited | Limited | ||
| Code Editor | Monaco (VS Code) | |||
| Progress Analytics | Basic |
Start free. Upgrade when you're ready for unlimited practice.
60% cheaper than Exponent. 84% cheaper per session than interviewing.io.
Join developers who are mastering interviews with AI coaching
"The AI feedback is genuinely better than most human interviewers I've worked with. It explains why my approach works, not just that it does."
"I spent $800 on mock interviews before finding GoliathPrep. Now I get unlimited practice with better feedback for $40/month."
"System design and code review questions are exactly what I needed. No other platform covers all five question types this well."