Drift

Your Dashboards Are Green While the Agent Quietly Gets Dumber — Post-Launch Silent Drift

Running a customer-service agent at a consumer-tech company, I learned one counterintuitive thing from watching the metrics: they're never a flat line. Every product launch, every back-to-school season, the question distribution shifts and a wave of new phrasings pours in — the agent quietly gets dumber, and not a pixel of it shows on the green CPU / QPS / latency dashboards. In 5 minutes you'll see through "dashboards green = healthy"; in 10 you'll have 6 leading signals that fire weeks before complaints; in 20 you'll turn the eval set from "frozen at launch day" into one that re-samples current traffic.