That $500k AI rewrite story is actually a story about test suites

A company recently made waves claiming AI saved them an estimated $300k per year in compute costs by rewriting a JavaScript library into Go. Sounds like an AI miracle story, right? I think the headline buried the lede. The real hero wasn't the AI. It was the test suite that already existed before anyone typed a single prompt. Why This Story Caught My Eye Everyone loves a good "AI saves the day" narrative. It's clean. It's shareable. It makes executives reach for their wallets. But when you read