Even Anthropic didn't notice Claude got worse for weeks — AI quality is invisible, and that's the enterprise problem

The company that ships the best coding model on the planet just published a postmortem worth sitting with: three innocent-looking config changes quietly degraded Claude's output — and it took weeks to track down. If the team that knows AI best can fail to notice their own model getting worse, what makes a business think it can eyeball an agent's output and catch the rot? Speed isn't in question. Whether the quality holds — and whether you'd even notice if it didn't — is the whole game....