Launch HN: Hypercubic (YC F25) – AI for COBOL and Mainframes

Hi HN, we’re Sai and Aayush and we’re building Hypercubic ( https://www.hypercubic.ai/ )! Hypercubic is an AI platform that helps Fortune 500 companies understand, preserve, and modernize their mainframe systems. These are the systems that run COBOL from the 1960s that still quietly power banking, insurance, airlines, and governments today. 70% of the Fortune 500 still run on mainframes, but the engineers who built and maintained them are retiring. Today, the average age of a COBOL/mainframe engineer is about 55 and rapidly increasing. What’s left behind are opaque, black box systems with almost no one who understands how they work. Modernization projects often fail, documentation is decades out of date, and critical institutional knowledge lives only in the minds of a few senior subject matter experts who are now leaving the workforce. Current “AI for code” tools focus on codebases and repositories, so they miss the unwritten rules, historical context, and architec