Langfuse covers traces and evals. Here is what else production teams need: structured logging, OpenTelemetry metrics, quality signals, sampling, canaries, and when to add Braintrust, Phoenix, or your existing APM.
A practical guide to LLM cost observability: structured logging, Langfuse dashboards, OpenTelemetry metrics, per-tenant budgets, and the unit economics finance actually needs.
A practical guide to the server-side layer between your app and the model — auth, rate limits, routing, logging, and the patterns that keep AI features production-ready.