Developer scores 66/100 after AI judge quizzes him on his AI-built hackathon project

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A developer entered HackerRank's Orchestrate hackathon in September 2026 and built a financial decision tool called Praxi Clew, which forecasted 90-day balances to assess whether a user could afford an expense. The tool was largely constructed using AI coding assistants, including Antigravity with Gemini and ChatGPT Astra, while the developer directed the work. After submitting the project, he underwent a 30-minute voice interview with HackerRank's AI judge, Chakra, which asked adaptive follow-up questions probing his understanding of the architecture, implementation details, and trade-offs. The developer acknowledged mid-interview that he struggled to explain technical specifics of a system he had built with heavy AI assistance, ultimately scoring 66.1 out of 100. He concluded that being able to articulate how something was built should be an integral part of the building process itself.

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